When under sustained, strong pressure, E. coli K12 mutants with fl-galactosidase gene deletions (lacZ) can regain their capacity to hydrolyze fl-galactosides.
Which strain of E. coli is most prevalent?Humans who are exposed to the E. coli strain known as O157:H7 develop a serious intestinal infection. The majority of people get sick from this strain.
How many different strains of E. coli exist?E. coli has been divided into more than 700 different serotypes. Some strains of E. coli can cause severe abdominal cramps, bloody diarrhea, and vomiting, but the majority of varieties are harmless or only cause mild diarrhea.
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The advantages of studying the processes and patterns of evolution using molecular data include all of the following except that
A. Molecular data directly reflect genetic differences.
B. Molecular data can be quantified
C. Molecular data can be applied to large amounts of genetic variation.
D. Molecular data can be used to compare different species. E. Molecular data are directly reflected in phenotype.
The disadvantages of studying the processes and patterns of evolution using molecular data are directly reflected in phenotype.
Thus, the correct answer is E.
What are the advantages of molecular data?Both moleculаr аnd morphologicаl dаtа hаve importаnt roles in elucidаting evolutionаry history аnd phylogeny. Аdvаntаges of moleculаr dаtа includes the lаrge number of chаrаcters thаt аre аvаilаble:
As well аs sophisticаted models of sequence evolution thаt mаy be used in phylogenetic аnаlyses However, in most instаnces it hаs not been possible to obtаin DNА sequences for fossil tаxа. In contrаst, certаin types of morphologicаl dаtа mаy be collected for both fossil аnd extаnt tаxа. Fossils provide а unique window on evolutionаry history аnd often preserve combinаtions of primitive аnd derived chаrаcters thаt аre not found in extаnt tаxаGiven their unique chаrаcter complexes, fossils аre criticаl in documenting sequences of chаrаcter trаnsformаtion over geologic timeMorphologicаl evidence from fossils mаy reveаl pаtterns of evolution thаt аre not аppаrent from moleculаr phylogenies аlone.For more information about molecular data refer to the link:
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Which of the following equation correct represents the exponential population growth curve? A) dN/dt=rN; B) dN/dt= rN(K-N/K); C) Nt=N0et; D) both A and C
The correct equation is B) dN/dt= rN(K-N/K) as it correctly display the exponential population growth curve.
This is maximum usually proven in differential shape as: dN/dt = rN((K – N)/K), wherein dN/dt (e.g., the price of alternate in populace length, N, at a given second in time, t) is a feature of the modern length of the populace (N) and the intrinsic or on the spot price of alternate (r).
The components of exponential growth is dNdt=rNdNdt=rN wherein is the price of alternate in populace length, r is the biotic capability and N is the populace length. Exponential boom is represented with the aid of using the equation dN/dt = rN. In this equation, dN/dt is the boom price of the populace in a given instant, N= populace length, t is time, and r is the in line with capita price of increase, that is, how speedy the populace grows in line with man or woman already withinside the populace.
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Question 1-13
Which type of biome occupies the largest area of Earth?
O marine
O tropical rain forest
O grassland
O temperate deciduous forest
Answer:
Option1) MarineThe marine biome is primarily made up of the saltwater oceans. It is the largest biome on planet Earth and covers around 70% of the Earth's surface and over 90% of life on Earth lives in the ocean. The average temperature of the ocean is 39 degrees F.SOLVED With multicellular organisms.. which type (s) of cells divide that do not pass genetic information??
Somatic cells in multicellular organisms divide but do not pass the genetic information.
What are somatic cells?Somatic cells, also known as vegetal cells, are biological cells that constitute the body of multicellular organisms and are distinguished from gametes, germ cells, gametocytes, and undifferentiated stem cells by their lack of differentiation. These cells make up the structure of an organism and reproduce through processes known as binary fission and mitotic division respectively.
Mutations in DNA that occur in somatic cells can have an effect on an individual, but they cannot be passed on to the progeny of that individual.
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Blue poppies native to China were grown at a plant-breeding center in California. The plants with the thickest leaves were most likely to survive and reproduce in the drier climate. After several generations, the percentage of thick-leaved plants had increased by 42%. This adaptation of the poppies to their new environment is due to _____.
- directional selection
The characteristics of the poppies shifted in response to the changed environment.
This adaptation of the poppies to their new environment is due to directional selection. The characteristics of the poppies shifted in response to the changed environment.
What is directional selection?
In population genetics, directed selection is a mode of negative natural selection in which one extreme phenotype is favored over the other, causing allele frequencies to shift towards that phenotype over time. . Under directional selection, favorable alleles increase as a result of survival and reproductive differences between different phenotypes. The increase is independent of allele dominance and is eventually fixed even if the allele is recessive. First described as a form of natural selection. Other types of natural selection include stabilizing selection and perturbing selection. Each type of selection involves the same principles, but is slightly different. Destructive selection favors both extreme phenotypes distinct from extreme directional selection. Stabilizing selection favors an intermediate phenotype and reduces population variation over time.
Therefore, This adaptation of the poppies to their new environment is due to directional selection.
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Question 3 of 10
RNA is a type of nucleic acid that is responsible for
transporting and using the information stored in DNA.
What aspect of RNA's structure makes it ideal for carrying out this role in an
organism?
OA. Its single-stranded structure, which allows it to easily copy the
pattern of bases in one strand of DNA
OB. Its hydrocarbon chains, which help the molecule repel harmful
substances
C. Its highly branched structure, which helps the molecule store a lot
of energy in a compact space
OD. Its long, narrow shape, which helps it pack tightly with other RNA
molecules
Similar to DNA, each strand of RNA has the same fundamental structure, which is made up of nitrogenous bases bonded covalently to a sugar-phosphate backbone. RNA is typically a single-stranded molecule, in contrast to DNA.
Do mRNA and tRNA have one strand?
A tRNA is created from a single strand of RNA, like the one modelled below (just like an mRNA is). Base pairs do, however, occur between nucleotides in various regions of the molecule, giving the strand a complex 3D shape.
Transcription
Making an RNA copy of a gene's DNA sequence is a process known as transcription in the context of genomics. The messenger RNA (mRNA) copy carries the DNA-encoded protein information for the gene.
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In living organisms, the ratio of the naturally occurring isotopes of carbon, C-12 to C-13 to C-14 is fairly consistent. When an organism such as a woolly mammoth died, it stopped taking in carbon, and the amount of C-14 present in the mammoth began to decrease. For example, one fossil of a woolly mammoth is found to have 1/32 of the amount of C-14 found in living organisms. Identify the type of nuclear reaction that caused the amount of C-14 in the woolly mammoth to decrease after the organism died.
One fossil of a woolly mammoth is found to have 1/32 of the amount of C-14 found in living organisms therefore the type of nuclear reaction that caused the amount of C-14 in the woolly mammoth to decrease after the organism died is referred to as beta decay reaction.
What is beta decay?This is referred to as a type of radioactive decay in which a beta ray is emitted from an atomic nucleus and the equation can be seen below:
¹⁴₆C→ ¹⁴₇N + ⁰₋₁e
This is also characterized by he proton in the nucleus being transformed into a neutron and vice versa. For example if a proton is converted to a neutron, it is known as β+ decay while if a neutron is converted to a proton, it is known as β– decay which is therefore the reason why it was chosen as the correct choice.
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take a position on the existence of a priori knowledge referencing relevant rationalist and empiricist philosophers.
A sort of epistemic justification known as a priori justification is in some ways independent of experience.
What does philosophy mean by a priori knowledge?Since Immanuel Kant, a posteriori knowledge—which is obtained through experience—has been contrasted with a priori knowledge, which is information that is learned independently of any particular experience.
Do rationalists think that knowledge is known beforehand?In the area of epistemology, or the theory of knowledge, where its claims are most clear, rationalism maintains that at least some human knowledge is acquired through a priori (prior to experience), or rational, insight as opposed to sense experience, which all too frequently offers a confused and merely tentative approach.
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Wheat is attacked by many different pests, including a fungus called yellow rust.
a Describe how you could use artificial selection to produce a new variety of wheat which is naturally resistant to yellow rust.
When resistant varieties of wheat are produced, it is found that after a few years they are infected by yellow rust again. Explain how this might happen
Answer:Puccinia striiformis f.
Stripe (yellow) rust, caused by Puccinia striiformis f. sp. tritici (Pst), is a serious disease of wheat occurring in most wheat areas with cool and moist weather conditions during the growing season. The basidiomycete fungus is an obligate biotrophic parasite that is difficult to culture on artificial media.
Explanation:Does rust turn black?
Image result
Rust from Iron (III) oxides with limited oxygen and low moisture results in black rust. Black rust can be visually identified as a thin, black film which is the result of oxidation in a low oxygen environment.
There are several fungicides that can be used to protect plants from infection. Mancozeb as a protectant and myclobutanil as an eradicant are generally effective against all rusts while triadimefon is effective against only specific rusts.
The mechanism by which antigen-reactive cells respond to foreign antigens while ignoring self-antigens is called clonal
A) selection.
B) deletion.
C) anergy.
D) expansion.
A) selection antigen-reactive cells respond to foreign antigens while ignoring self-antigens is called clonal.
What examples exist of self-antigens?Microproteins, nucleic acids, carbohydrates, and lipids are a few examples of self-antigen indicators.Self-antigen markers serve to stop the immune system from attacking bodily cells that it is defending.
What do you name a self-antigen?These elements, which go by the names autoantigens or self-antigens, primarily consist of proteins (or proteins complexed to nucleic acids).Autoantibodies and autoreactive T cells are the terms used to describe antibodies and T lymphocytes that identify autoantigens.
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Nitrogen is part of many important substances in living organisms. Distinguish between transcription and translation.
A. DNA transcription AND mRNA translation, B. transcription creates RNA AND translation creates polypeptides or proteins, C. RNA polymerase is only used in transcription and ribosomes are only used in translation.
What kind of example of organisms?A living species that possesses all the characteristics of life is often referred to as an organism. These can take the form of a microorganism, insect, bird, plant, or even a mammal. Numerous diverse species of life number in the billions or trillions on our planet Earth.
Which creatures are present in people?Millions of little living things, collectively known as the human microbiota, live inside each and every cell of the body. In the mouth, nose, and skin, bacteria are microscopic organisms.
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Classify these sequences based on their potential to modify protein products. The plain letters in the sequences represent protein coding regions, and the bold letters represent noncoding regions.
TACCTTAATT → TACCTTAATTATT
GAGACCGT → GAGACCAGT
TACCTTAATT → TACCTTAATT this is the based on their potential to modify protein products. The plain letters in the sequences represent protein coding regions, and the bold letters represent noncoding regions.
We can see that the first and second sequences for this item are exact duplicates of one another. With this knowledge, we may thus presume that the protein has not been altered.
What is Coding regions ?The section of a gene's DNA or RNA that codes for protein is referred to as the coding area of a gene, also known as the coding sequence.
The section of a gene's DNA or RNA that codes for proteins is referred to as the coding region of a gene, often known as the coding sequence (CDS).
A gene's coding region, which is made up of all of its exons, is the portion of the gene that will ultimately be transcribed and translated into protein. Introns, or areas that are removed during RNA splicing and discarded, are interspersed throughout the remaining portion of the gene.We can see that the first and second sequences are exact duplicates of one another. With this knowledge, we may thus presume that the protein has not been altered.I'm not sure if the region that was lost in the second sequence (ATT) is a noncoding region.Yo know more about Coding regions please click here : https://brainly.com/question/11355655
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4. A car of mass 800 kg accelerates from 5m / s to 25m / s in 10 s. a) Calculate the acceleration. b) Calculate the resultant force exerted.
Answer: To calculate the acceleration of the car, we can use the equation:
acceleration = (final velocity - initial velocity) / time
Plugging in the values given in the question, we get:
acceleration = (25 m/s - 5 m/s) / 10 s = 2 m/s^2
To calculate the resultant force exerted on the car, we can use the equation:
resultant force = mass * acceleration
Plugging in the values given in the question, we get:
resultant force = 800 kg * 2 m/s^2 = 1600 N
This is the force that must be exerted on the car to accelerate it from 5 m/s to 25 m/s in 10 s.
A) As, the accelerarion equation is V - U/t
so its 25-5/10 so its 2m/s^2
B) With the above answer in A) we can calculate the force with the equation f = m * a
so , 800*2 = 1600N
There are 30 players on each high school football team.Explain how you can find the total numbers of players if there are 40 teams.write and solve an equation.
There are 30 players on each high school football team, so, the total numbers of players are 1200 if there are 40 teams
What does a football team mean?It is usually understood that the term "football" (or "foot ball") refers to the motion of the foot kicking a ball. An alternate interpretation is that football originally referred to a range of sports performed on foot in Medieval Europe.
A football team is a collection of players who have been chosen to play together in different football team sports.
In most circumstances, high school teams will include between 40 and 50 players. As players grow more specialized, playing solely offensive or only defense, a higher roster size is required.
Given that,
There are 30 players on each high school football team, if there are 40 teams, then total numbers of players, (30 × 40) = 1200 players.
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Please help no wrong answer!!
Should medical information ever be withheld from a patient? If so, when and why?
During the 1950s, a scientist named Lysenko tried to solve the food shortages in the Soviet Union by breeding wheat that could grow in Siberia. He theorized that if individual wheat plants were exposed to cold, they would develop additional cold tolerance and pass it to their offspring. Based on the ideas of artificial and natural selection, do you think this project worked as planned?
No, because there was no process of selection based on inherited traits. Lysenko assumed that exposure could induce a plant to develop additional cold tolerance and that this tolerance would be passed to the plant's offspring.
Based on the ideas of artificial and natural selection, this project didn't work as planned C. because there was no process of selection based on inherited traits.
Trofim Lysenko was a biologist in the Soviet Union at the time who was opposed to the fundamental principles of science. Humans developed selective breeding as a means of achieving desired outcomes by altering specific species' characteristics. This is based on the idea that genes in living things contain traits that can be passed down from one generation to the next.
Lysenko refuted this assertion. He was more of a firm believer that animals and plants can quickly adapt to their surroundings and develop traits that they can then pass on to their offspring. When he exposed wheat plants to cold, he used this theory to predict that they would become cold-tolerant. Millions of people in the Soviet Union perished as a result of severe starvation and this woefully failed.
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(Complete question)
During the 1950s, a scientist named Lysenko tried to solve the food shortages in the Soviet Union by breeding wheat that could grow in Siberia. He theorized that if individual wheat plants were exposed to cold, they would develop additional cold tolerance and pass it to their offspring. Based on the ideas of artificial and natural selection, do you think this project worked as planned?A. Yes; the wheat probably evolved better cold tolerance over time through inheritance of acquired characteristics.
B. No, because Lysenko took his wheat seeds straight to Siberia instead of exposing them incrementally to cold.
C. No, because there was no process of selection based on inherited traits. Lysenko assumed that exposure could induce a plant to develop additional cold tolerance and that this tolerance would be passed to the plant's offspring.
D. Yes, because this is generally the method used by plant breeders to develop new crops.
6. In which one of the following situations would you observe signs of fermentation first? a. a flask with dried yeast only in a warm room (20 °C) b. a flask with dried yeast and water in a warm room (20 °C) c. a flask with dried yeast, water and sugar in a refrigerator (4 °C) d. a flask with dried yeast, water and sugar in a warm room (20 °C)
The suggested hypothesis is that fermentation may be to blame for the rise in lactate levels.
What are the different capacities a bacteria will have?Bacteria with the capacity to utilize a variety of carbohydrate sources create lactic acid through the fermentation process. The primary bacteria utilised to create lactic acid are lactic acid bacteria, and among these, Lactobacillus spp. have demonstrated intriguing fermentation abilities.
Lactic acid fermentation was a consequence of a deficiency in oxygen inside the muscle cells. This is because oxygen is required by the cell as a terminal electron acceptor in order to make ATP.
Therefore, The suggested hypothesis is that fermentation may be to blame for the rise in lactate levels.
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HELP IM ON LIMITED TIME
Scientists use bacteria to study natural selection because they
reproduce very quickly. After doing thousands of experiments and
collecting a lot of data, a scientist says "The type of bacteria that
survives and reproduce will pass on their traits to their offspring."
This statement is an example of a(n)
Select one:
Theory
Law
Observation
Hypothesis
Answer:
This statement is an example of a hypothesis.
Explanation:
This statement is an example of a hypothesis. A hypothesis is a proposed explanation for a phenomenon. It is based on observations and can be tested through further experimentation. In this case, the scientist is proposing a hypothesis about the relationship between the traits of bacteria and their ability to survive and reproduce. This hypothesis can be tested through further experiments to see if it holds true.
Osmosis is the movement of________molecules from an area of______concentration to an area of_________concentration until_________is acheived
Osmosis is the movement of water molecules from an area of higher concentration to an area of lower concentration until membrane is achieved.
What is osmosis?Osmosis is the naturally occurring net movement or diffusion of solvent molecules across a selectively permeable membrane from a region of high water potential to a region of low water potential in a manner that tends to balance the solute concentrations on the two sides.The spontaneous movement of water or other solvents through a semipermeable membrane is known as osmosis.Transport of solute molecules over a semipermeable membrane from a lower concentration of solution to a higher concentration.Osmosis lets an animal cell absorb water from the intestines into the blood. Here are some further instances of osmosis. Osmosis is responsible for the soil's ability to absorb water. In contrast to the soil, the concentration is higher in the plant roots.Water enters the roots as a result.Osmosis is the movement of a solvent toward a more concentrated solute across a semipermeable membrane. Osmosis can occur in a variety of liquids, including supercritical liquids, gases, and other liquids, despite the fact that water is frequently the solvent in biological systems.Learn more about osmosis here:
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many of the similes in the iliad compare humans to animals; during achilles' aristeia in boks 20-22, he is also repeatedly compared to .
Many of the similes in the Iliad compare humans to animals; during Achilles' aristeia in Boks 20-22, he is also repeatedly compared to a lion.
Who was Achilles?
Achilles was a Greek hero, the central character in Homer's epic poem "The Iliad". He was the son of the mortal Peleus and the sea-nymph Thetis. His most notable feat was the slaying of the Trojan champion Hector during the Trojan War. He was also known for his great strength, courage, and loyalty.
Why is Achilles repeatedly compared to a lion?
Achilles is repeatedly compared to a lion because he was known for his strength and courage in battle, similar to how a lion is known for displaying these qualities. Achilles was also known for his relentless pursuit of revenge, which is another trait that lions are known for.
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Compare and contrast the boundaries that plant, animal, and bacteria cells use to seperate themselves from their surrounding enviroments
In animal cells, the plasma membrane's external side comes into touch with the extracellular space. While bacteria's cell wall is formed of peptidoglycan, plants' cell walls are composed of cellulose.
What are the differences in the cell borders between animal and plant cells?Animal cells are eukaryotic cells with a nucleus that is membrane-bound. In a number of crucial ways, they vary from plant cells. These cells are devoid of plastids, a cell wall, and other cellular organelles.
Bacteria lack a nucleus and organelles that are attached to membranes because they are prokaryotic. A nucleus and membrane-bound organelles like the mitochondria or golgi apparatus are present in eukaryotic cells, which are what make up plants and animals.
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antidiuretic hormone (adh) is important in maintaining homeostasis in mammals. adh is released from the hypothalamus in response to high tissue osmolarity. in response to adh, the collecting duct and distal tubule in the kidney become more permeable to water, which increases water reabsorption into the capillaries. the amount of hormone released is controlled by a negative feedback loop. Based on the model presented, what is the relationship between ADH release, osmolarity and production of urine? o As tissue osmolarity rises, more ADH is released, causing less water to be excreted as urine o As tissue osmolarity rises, less ADH is released, causing less water to be excreted as urine o As tissue osmolarity rises more ADH is released, causing more water t0 be excreted as urine o As tissue osmolarity rises, less ADH is released, causing more water to be excreted as urine
0 Two of the above
The relationship between ADH release, osmolarity and production of urine is as tissue osmolarity RISES, MORE ADH is released, causing LESS water to be excreted as urine.
In mammals, antidiuretic hormone (ADH) is essential for maintaining homeostasis. In response to high tissue osmolarity, the hypothalamus releases ADH. The collecting duct and distal tubule in the kidney become more permeable to water in response to ADH, increasing water reabsorption into the capillaries.
Antidiuretic hormone is a brain chemical that causes the kidneys to release less water, reducing the amount of urine produced. When the ADH level is high, the body produces less urine. A low level causes more urine production. Desmopressin is a synthetic form of vasopressin, an antidiuretic hormone. Diabetes insipidus, primary nocturnal enuresis, spontaneous bleeding or haemorrhage, haemophilia A, von Willebrand's disease, and nocturia are all treated with it.
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starvation would cause which of the following acid-base conditions? also, determine what type of compensation (metabolic or respiratory) there would be
Option c is the appropriate response. With respiratory compensation, acid-base conditions caused by starvation would result in metabolic acidosis.
Respiration and metabolism are interdependent. Metabolic compensation and respiratory acidosis or alkalosis go hand in hand. Similar to metabolic alkalosis, respiratory compensation is related to metabolic acidosis. Within cells, a process known as cellular respiration uses enzymatic pathways (such as glycolysis and the Krebs cycle) to break down glucose, releasing water, carbon dioxide, and ATP in the process. Direct responses to metabolic demands are made through respiration. The lungs carry out a number of metabolic processes, such as gas exchange, the inactivation of vasoactive chemicals, the conversion of angiotensin I to angiotensin II by the angiotensin-converting enzyme (ACE), and protein synthesis.
Therefore, we can conclude that Option C is the proper response. Acid-base conditions brought on by hunger would lead to metabolic acidosis with respiratory correction.
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Complete Question:
Starvation would cause which of the following acid-base conditions? Also, determine what type of compensation (metabolic or respiratory) there would be.
A. respiratory acidosis with metabolic compensation
B. respiratory alkalosis with metabolic compensation
C. metabolic acidosis with respiratory compensation
D. metabolic alkalosis with respiratory compensation
In concentrated (hypertonic) solutions, water _____ the cells
In concentrated (hypertonic) solutions, water moves out of the cells. There is a net flow of water out of the cell and cell loses its volume.
What is a hypertonic solution?
A hypotonic solution is a solution which has lower osmotic pressure than the solution outside to which it is compared. It may also mean a solution which contains a lower amount of solute concentration as compared with the solute concentration in the other solution which is present across a semipermeable membrane.
In a hypertonic solution, there is a net movement of water out of the cell body and into the solution in which the cell is placed. A cell placed into a hypertonic solution will shrink and die by a process known as plasmolysis which results into reduction of cell volume.
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Jessie's initial blood test results show that her common electrolytes, blood pH, lactate, pyruvate, total ammonia, oxygen, and carbon dioxide levels are all within the normal ranges. You also test for common lipids, including fatty acids (FAs), triacylglycerides (TAGs), total cholesterol, and ketone bodies, using acetoacetate as a marker. Prolonged fasting changes the concentrations of certain substances in the blood. Test Jessie's level Normal range FAs 500 mg/dL 190–420 mg/dL TAGs 175 mg/dL 40–150 mg/dL total cholesterol 140 mg/dL 120–200 mg/dL ketone bodies undetectable 5–30 μg/mL Select all the substances in the blood that you would expect to increase in concentration after a healthy individual has fasted for 12 hours. - glucagon - insulin - glucose - fatty acids - ketone bodies
She has elevated levels of triacylglycerides and fatty acids because she is obese.
After prolonged fasting, there are profound changes in many circulatory parameters that can affect postprandial nutrient metabolism. Significantly increases and lowers blood sugar levels.
Skipping meals can lower blood sugar levels and medication can lower blood sugar levels further leading to hypoglycemia. Low blood sugar can make you shiver pass out or throw you into a coma. Eating to break the fast can also lead to hyperglycemia. A significant metabolic change is an increase in lipolysis. Fasting results in a lack of carbohydrates that the body can use to form ATP.
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Determine an approximate interval width for a random sample of 110 observations that fall between and include: A. 20 to 85 B. 30 to 190 C. 40 to 230 D. 140 to 500.
It is defined as the difference between the upper-class limit and the lower class limit. Class Interval = Upper-Class limit – Lower class limit.
What is an approximate interval?If you know the exact distribution of the test statistic, and use that distribution's quantiles to make confidence intervals, that interval is exact. If you approximate the distribution of the test statistic, then the interval is approximate.The Empirical rule states that for a normal distribution, nearly all of the data will fall within three standard deviations of the mean . The empirical rule is further illustrated belowThe Empirical Rule states that, for a normally distributed random variable:68% of the measures are within 1 standard deviation of the mean.95% of the measures are within 2 standard deviation of the mean.99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
68% of data falls within the first standard deviation from the mean.95% fall within two standard deviations.99.7% fall within three standard deviations.From the information given, the mean is $150 and the standard deviation is $20.2 standard deviations = 2 × 20 = 40
150 - 40 = $110
150 + 40 = 190
Therefore, about 95% of the monthly food expenditures are between $110 and $190
Mean = 150
Standard deviation = 20
95% of the monthly food expenditures are between what two amounts:By the Empirical Rule, within 2 standard deviations of the mean150 - 2*20 = $110
150 + 2*20 = $190
$110 and $190
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Which term means "a feature of
an organism's body that helps it
survive and reproduce"?
Behavioral
Anatomical this is the answer
Answer:
• Anatomical adaptation: a feature of an organism's body that helps it survive and reproduce.
Explanation:
Answer: Anatomical
Explanation:
When an individual exercises vigorously for more than 15 minutes, the muscle cells are unable to obtain oxygen from the blood quickly enough. As a result, the muscle cells
A.
Answer:
activate anaerobic respiration, producing lactic acid build-up.
In a study of hypoglycemic shock, cellular changes in
the brain are analyzed. One cell type in the hippocampus is
noted to exhibit intense cytoplasmic eosinophilia, central chromatolysis,
spheroidal swellings, and nuclear pyknosis. These
changes appear 12 hours after blood glucose levels drop below
20 mg/dL. What is this cell type most likely to be?
A Astrocytes
B Endothelial cells
C Microglia
D Neurons
E Oligodendroglia
The cell type most likely to be affected is astrocytes.
Blood-brain barrier is network of blood vessels and tissue made up of closely spaced cells. It is made up of astrocyte perivascular feet and capillary endothelial cells.
Astrocytes are the most abundant cells in the central nervous system that twine around nerve cells supporting the brain and spinal cord. They perform many functions; such as providing the neurons with nutrients, control the blood brain barrrier and blood flow. Astrocytes are basically responsible for maintaining the central nervous system homeostasis.
The purpose of the blood–brain barrier is protection from circulating toxins or pathogens that can cause brain infections, and allowing vital nutrients to reach the brain.
Therefore, the cell type most likely to be affected is astrocytes.
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In humans, free ear lobes are dominant to attached ear lobes. If a child has the heterozygous genotype for this trait, what phenotype will be expressed?