Enzymes are biological catalysts of chemical reactions. Absorption refers to the intake of substances from the small intestine while digestion also involves breaking down foods by enzymatic processes. The stomach mechanically breaks down food into small substances, while the small intestine absorbs these products. The digestive system affects other systems because the chemical energy required by cellular respiration is obtained by digestion.
What is an enzyme?An enzyme is a biological catalyst that acts to lower the activation energy of reactions. These catalysts (enzymes) play a fundamental role in digestion by breaking down foods into smaller particles.
Moreover, the small intestine functions to absorb these small particles which are used by cells during cellular respiration.
Therefore, with this data, we can see that an enzyme is a catalyst that acts to enhance the release of energy in the chemical reaction that occurs during digestion, which is a process that involves many organs such as the stomach and the small intestine.
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during early development of the vertebrate central nervous system, undifferentiated epithelial cells that enter the neuronal lineage signal to their neighbors by displaying which of the following membrane proteins?
During early development of the vertebrate central nervous system, undifferentiated epithelial cells that enter the neuronal lineage signal to their neighbors by displaying the delta membrane proteins.
Epithelial cells are the cells that are present on the outer surface pf the body and also the internal organs like blood vessels, urinary tract, etc. Their functions can be varying like protection, secretion, absorption, excretion, filtration, diffusion, etc.
Delta proteins are the ones that participate in Notch signaling where they bind and activate another protein called the Notch protein. The role of delta protein can be seen during neurogenesis. Neurogenesis is the formation of new neurons in the body.
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which base will thymine (enol) pair with in dna? a. cytosine b. uracil c. thymine d. guanine e. adenine
In DNA, guanine pairs with thymine (enol).
What is DNA?Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid. The DNA of an individual can be found in almost all of their cells.
Adenine and thymine form hydrogen bonds with cytosine and guanine, respectively, holding the two strands together.
base pair of DNA. The nitrogen-containing bases adenine (A), thymine (T), and cytosine (C), as well as guanine (G), couple together under normal conditions. The structure of DNA is created by the binding of these base pairs.
a group of two bases found in DNA or RNA molecules. Adenine and thymine (A-T) are the only two bases that are always paired with cytosine in DNA.
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The signature animal morphological feature called the __________ is found in rotifers and aids in feeding.
The signature animal morphological feature called the corona
in most species of rotifers, the head carries a corona which is a crown of cilia that draws a vortex of water into the mouth which the animal sifts for food
The rotifers obtain food that is directed toward the mouth by the current created from the movement of the corona, the food particles travel to the mastax and further the food passes by digestive and salivary glands into the stomach and then into the intestines
the rotifer's movements are by the circular arrangement of moving cilia at the front which rotates
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Help with #12 please
Answer:
See explanation (i am not sure for g and h)
Explanation:
a.) Cartilage - Soft flimsy bone provided at birth. Acts as a buffer between bones
b.) Blood Vessels - Covers the surface of the bone, this aids in repairs and injuries. Carries blood to other parts of the body.
c.) Osteoblasts - Type of cell capable of migrating and depositing new bone. Builds bone.
d.) Osteocytes - Osteoblasts that become trapped in the construction of bone; also known as a living bone cell
e.) Osteoclasts - A bone cell involved in the breaking down of bone and the removal of wastes.
f.) Enzymes - Dissolve the injured or damaged part of the bone so that new, healthy bone can be laid down. Chemical reactions in the body.
A dark -colored wall becomes warm when the sun shines on it after sunset , a person standing a meter away can feel warmth from the wall how does heat transfer from the wall to the person
When the sun shines on a black wall after dusk, the wall gets warm; someone standing one meter away may feel the warmth. The heat transfer from the wall to the person through - radiation.
Heat transfer is any or all of a variety of processes that are thought to function as mechanisms to move entropy and energy from one place to another. Common names for the specific mechanisms include convection, heat radiation, and conduction. Three processes of heat transfer are —radiation, conduction, and convection -into and through the atmosphere.
Radiation is the electromagnetic transmission of heat energy through space.
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Each time a fatty acid bonded to the glycerol molecule, you should have -H and an O-H left over. What molecule
does these left-over atoms bind together to create?
Each time a fatty acid is bonded to the glycerol molecule the leftover atoms -H and -OH bind together and create a water molecule i.e H₂O molecule.
What are Fatty Acids?
A fatty acid is a carboxylic acid having an aliphatic chain that is either saturated or unsaturated.
Fatty acids are the building blocks of fat in our bodies and our meals. The body converts lipids into fatty acids during digestion, which can subsequently be absorbed into circulation. Fatty acid molecules are typically joined in groups of three to form a molecule known as a triglyceride.
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last year, dr. thomas used hydrogen peroxide to clean the spot where he planned to administer a vaccination shot to serena. which of the following processes accounts for the fact that serena now becomes fearful every time she sees hydrogen peroxide?
Serena's fear of hydrogen peroxide is an example of a classical conditioning in Psychology.
Classical conditioning is a form of associative learning that happens unconsciously as your response are automatically conditioned by giving a specific stimulus. In this case, the otherwise neutral object such as hydrogen peroxide, being used to clean the spot where the doctor administered a vaccination shot using needle which caused pain are causing Serena to negatively associate hydrogen peroxide with pain and therefore resulting in her fear towards hydrogen peroxide.
Classical conditioning is often called Pavlovian conditioning since it was first experimented and discovered by Russian psychologist Ivan Petrovich Pavlov, and in the classical conditioning experiment, Pavlov would ring a bell whenever he was about to feed the dogs causing the dogs to salivate in excitement of the food, and having done so a few times, Pavlov noticed that the dogs would automatically salivate upon hearing the bell even without any food given.
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Which events are likely to be catastrophic to an ecosystem? select the three correct answers.
Volcanic eruption, an oil spill, and the introduction of a species that reproduce quickly are the likely events to be catastrophic to an ecosystem.
So, the correct options are A, B &E.
The activities of both plants and animals in a specific ecosystem will be disrupted by a volcanic eruption, which will result in the loss of habitation. A whole ecosystem might be completely wiped out depending on the size of the volcanic explosion. The aquatic ecology is seriously harmed by an oil leak, which also causes the demise of aquatic life.
An ecosystem will quickly become dominated by a species that reproduces quickly, to the detriment of other species, if that species is introduced. Catastrophic occurrences are those that have the potential to seriously harm the ecosystem. The ecosystem is severely harmed by hurricanes, tropical cyclones, tsunamis, and numerous destructive tidal waves.
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The given question is incomplete. So, the complete question is:
Which events are likely to be catastrophic to an ecosystem? (Select three correct answers)
A. A volcanic eruption
B. An oil spill
C. Leaves changing color in the fall
D. The average annual melting of snow
E. The introduction of a species that reproduces quickly
Environmental factors that can cause genetic mutations can be classified as chemical, physical, or biological mutagens.
Chemical Physical Biological
benzene peroxides x ray UV light helicobacter pylori hepatitis b virus HPV
Gamma radiation Nitrites
Answer:
Chemical:
Benzene PeroxideNitritesPhysical:
X-rayUV lightGamma RadiationBiological:
Helicobacter PyloriHepatitis B VirusHPV (Human Papilloma Virus)metformin is a drug used to treat type 2 diabetes by decreasing glucose production in the liver. ampamp-activated protein kinase (ampk)(ampk) is a major cellular regulator of glucose metabolism. metformin activates ampkampk in liver cells but cannot cross the plasma membrane. by blocking ampkampk with an inhibitor, researchers found that ampkampk activation is required for metformin to produce an inhibitory effect on glucose production by liver cells. which of the following best describes the component that metformin represents in a signal transduction pathway that regulates glucose production in the liver?
Since metformin cannot enter the plasma membrane, it is most likely an agonist that interacts to a receptor there.
What meals trigger diabetes?Lemonade, sodas, sweet tea, and fruit drinks can all cause weight gain and raise your chance of developing type 2 diabetes. According to a 2010 research by American Diabetes Association, drinking only two sugar-sweetened beverages per day can raise your risk of developing type 2 diabetes by much as 26%.
Is diabetes curable?Type 2 diabetes is now incurable, but our researchers are developing an innovative weight-management experiment to help people put your condition into remission. Remission occurs when the blood sugar (or glucose) levels return here to normal range.
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examples of invasive species to the united states include all but . answer burmese python to the florida everglades cheatgrass to the western united states red-cockaded woodpecker to the southeastern united states lionfish to the caribbean
The species that is not invasive to the United States is the red-cockaded woodpecker to the southeastern United States.
Invasive species are native or non-native species that widely affect habitats and cause environmental damage, economic loss, or harm to humans. The cause of a species becomes invasive due to competition in obtaining food with other species. One way to grow and reproduce as quickly as possible.
Invasive species pose a major threat to biodiversity because they can starve native or other species of food and slowly disappear. The following are some examples of invasive species in the United States: Burmese python, lionfish, and cheatgrass.
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Which of the following compounds can be classified as a proteins
Fatty acids
Nucleic acids
Enzymes
Polysaccharides
Answer:
c) Enzymes
Explanation:
Enzymes are the compounds that can be classified as proteins. Such as the enzyme "Trypsin" is a protein. Hence, the option (c) is the correct answer.
Answer: Enzymes
Explanation:
only Enzymes can be classified as proteins. Enzymes are the only particles made of proteins in the list. Enzymes are made of amino acids linked in peptide bonds.
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manx cats are tailless and when crossed with one another produce on average 1 long-tailed (wild type) cat for every 2 manx. the m (manx) allele is lethal in homozygous condition due to problems arising during development. thus, a mm genotype is lethal, a mm cat is manx (tailless), whereas a mm cat is wild type with a long tail. a population is composed of manx and wild-type cats in a 2 manx: 3 wild-type ratio. the cats randomly mate and reproduce f1 progeny. what is the frequency of m allele of the f1 generation?
The frequency of the m allele of the f1 progeny is going to be 3/4.
Here, it has been mentioned in the question that the M allele is lethal, which then means that a MM genotype is going to be lethal. For an offspring to be tailless, it needs to have the genotype mm. And a wild-type cat has the genotype Mm.
It has also been given that in the population, the Manx cats and wild cats live in a ratio of 2:3. On average, 1 long-tailed cat is there for every 2 Manx. Now, after the f1 generation is produced, the genotypes are going to be - (MM, Mm, Mm, mm).
Since we know that there are 2 Manx cats (mm) for every long-tailed one (Mm), the frequency of the m allele is going to be 3/4.
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When growing cultures, the agar is ________ to separate pathogenic colonies of organisms from colonies of normal flora.
When growing cultures, the agar is inoculated to separate pathogenic colonies of organisms from colonies of normal flora.
Agar is the medium that is used for growing natural, common flora of microorganisms as the majority of the microorganisms can sustain in the agar medium.
If we want to determine a separate pathogenic colony of organisms in an agar medium then we need to inoculate the agar growth medium so that the pathogenic organism is separated from the normal flora of the microorganism. This technique allows us to filter out the cells that have the pathogenic microorganism in it.
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QUESTION 25/26 PLEASE ILL GIVE BRAINLIEST
Examine the diagram to below and the trend seen by the two lines. Global temperature has been closely linked with
the buildup of CO2 in the atmosphere. Which of the following statements is most likely true based on the graph?
A. Since 1880, carbon dioxide has caused a
temperature increase of 10° Fahrenheit.
B. Since 1880, adding carbon dioxide has
caused the global temperature to decline.
C. Since 1880, carbon dioxide has caused the
temperature to increase by about 1.2 degrees.
D. Since 1880, carbon dioxide has no effect on
the global temperature.
26. According to the same graph to the right,
A. From 1900 to 1950, the average global
temperature constantly increased.
B. The concentration of CO2 in the atmosphere
increased at a constant rate from 1920 to
1980.
C. The concentration of CO2 and the temperature
were the same in 1880.
D. CO2 in the atmosphere and temperature have
increased at the same rate since 1930.
Answer: the answer is C
Since 1880, carbon dioxide has caused thetemperature to increase by about 1.2 degrees.
Explanation:
Cans someone help me to make a paragraph of the further use of nitrogen fertilizer ? please and thank u
The most significant anthropogenic sources of nitrogen compounds in the environment are the combustion of fossil fuels and nitrogenous fertilisers used in agriculture.
The growth and reproduction of plants depend on nitrogen. Growth of pasture and crops will frequently respond to an increase in soil nitrogen supply. Fertilizers containing nitrogen are frequently added to this scenario to regulate it.
Strong greenhouse gas nitrous oxide contributes between 5% and 7% of worldwide greenhouse gas emissions, 90% of which come from agricultural operations. The main sources of nitrous oxide emissions on farms are nitrogen-based fertilisers and livestock manure (dung and urine).
The most significant impact on reducing nitrous oxide losses comes from products that capture nitrogen more effectively. This also reduces ammonia volatilization to the atmosphere, as well as nitrate leaching.
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