While performing a fermentation test with an unknown bacteria by using stab culturing technique. if the test result came out purple you can conclude that the culture is basic and your unknown bacteria cannot metabolize arabinose.
Originally sold as a sweetener, arabinose inhibits the action of sucrase, an enzyme in the small intestine that converts sucrose to glucose and fructose.
Agar plates and stab cultures are similar, except stab cultures are created in test tubes using solid agar. Inoculation needles or pipette tips are used to stab the agar's center, introducing bacteria. Then the bacteria flourish in the hole, the purple result means the bacteria present in the culture cannot consume the arabinose.
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Dietary supplements and decongestants containing ephedrine have recently become more strongly regulated in the united states. Ephedrine is an extract of a plant belonging to which phylum?.
The phylum is Gnetophyta
If water were a nonpolar molecule, how would its properties be different?
A. Water would be a much heavier molecule.
B. Water would be able to climb up inside plants.
C. Water would not stick together as well.
D. Water would form hydrogen bonds.
When mutated cells ignore checkpoints, they reproduce uncontrollably, forming tumors. During which stage of the cell cycle does the cell divide into two cells?
M
S
G2
G1
The M stage of the cell cycle is where cell divide into two cells and is denoted as option A.
What is Mitosis?This is referred to a type of cell division in which the parent cell produces two identical daughter cells while meiosis involves the production of four unique daughter cells.
In cell division, the mitotic phase which is denoted as M phase , the cell divides its copied DNA and cytoplasm thereby resulting in the formation of two new cells and two major processes are involved and they include:
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you identify a new species of bacteria at the bottom of the ocean, but these organisms lack a site-specific recombination system. which components would together allow for site-specific recombination to occur in these bacteria?
Answer:
FRT target sites,
flp recombinase,
cas9 enzyme,
spo11,
a synthetic homologous chromosome
Explanation:
hope it helps
Mammals have a large amount of parental care, where one or both parents assist with the nurture of the newly-born offspring. Female wolves nurse and protect their pups for months. Chimpanzee offspring are cared for by the parents for several years. Although mammals have fewer offspring per reproductive event than fish, reptiles, and amphibians, their survival throughout their juvenile period is much higher. However, there are a few species of tropical frogs that lay eggs, but both parents tend to care for the offspring after they hatch. The male frog guards the eggs while the female frog assists in feeding the larvae after they hatch. Based on the passage, what makes a researcher infer that the survival rates are higher for tropical frogs than other frog species in general?
Answer:
Biparental care allows the energetic demands to be shared between both parents, which can improve the number of surviving offspring
Explanation:
What is incorrect or missing in these two graphs
In first graph, the age of 15 to 20 has more increament then the age of 20-24.
Why is the number of rate increases ?More twins are being born now than ever before mainly because of the rising use the IVF and more people starting their families later in life. The rate of twin birth may now as its peak , though due to fertility clinics refining their techniques.
Compared to 1980, when 1 in every 53 babies were born in the United States, one in every thirty births were twins in 2009.The twin birth rate increased by 76% between 1980 and 2009, from 18.9 to 33.3 per 1,000 live births.There would have been about 865,000 fewer twin births in the United States over the past three decades if the rate of twin births had remained constant since 1980.The vast majority of states and the District of Columbia saw increases in twinning rates of at least 50%.Over the three decades, the rates of twin birth increased by more than 200 percent among women over 40 and by almost 100 percent among women aged 35 to 39.To learn more about Twins rate refer
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Put the following examples of levels of organization of living things in order from smallest to largest, placing the smallest at the top
The top will be the smallest:
Heart Cell
Cardiac Tissue
Blood, Heart, Blood vessels
Circulatory System
Whole Human Person
If a species has 42% adenine what percentage of thymine will it have
If a species has 42% adenine, then 42% of thymine will have.
How can I determine the adenine-to-thymine ratio?The four nucleotide bases that makeup DNA are adenine (A), cytosine (C), guanine (G), and thymine (T) (T).
Adenine nucleotides on one strand pair with thymine bases on the other strand in a double-stranded DNA molecule. Information in DNA is encoded by the arrangement of the four nucleotide bases.
Because hydrogen bonds can only form in specific configurations, A is always paired with T, and G is always paired with C.
The Chargaff rule states that adenine concentration equals thymine concentration. The [T] will consequently likewise be 40% if [A]=40%. However, this rule only applies to double-stranded DNA molecules.
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Which statement best describes the overarching theme of this story?
A. Those who escape prison will suffer consequences
B. The young are often foolish
C. Pride goes before a fall
D. Intelligence doesn’t always equal power
An "overarching theme" is the overarching theme that includes many sub-themes that are subsumed under it.
How to illustrate the theme?Everything is impacted or included when something is encompassing. While your story touches on a multitude of issues and concepts, its overall theme is the significance is vital on the story.. This adjective refers to a characteristic that affects every component of anything when used metaphorically.
A literary theme is the central idea or underlying meaning that a writer focuses on in a novel, short tale, or other literary work. A story's theme can be conveyed through characters, setting, dialogue, plot, or a mixture of all of these elements.
Note that an overview was given as the information is incomplete.
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you find a fossil organism that you think is an animal. which characteristic needs to be present to determine whether it is a sponge versus a cnidarian? please choose the correct answer from the following choices, and then select the submit answer button. answer choices complex organ systems multicellularity bilateral symmetry multiple tissues
The characteristic that will determine whether the fossil organism which is an animal is a sponge or a cnidarian is: (4) multiple tissues.
Fossils are the dead and decaying remains of the plants or animals that were buried deep down on the earth millions oy years ago. The fossil can be in the form of some bone, exoskeleton, hair, petrified wood, traces of DNA, etc.
Cnidarians are the animals that belong to the phylum Cnidaria. The examples of cnidarians include corals, hydras, jellyfish, etc. These organisms have tissue level of body organization and therefore it becomes a distinguishing characteristic that differentiated them from the sponges.
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why might some food witha lower energy content be better food choicess for you than foods with a higher energy
Answer:
foods with lower energy contain less calories
Answer:
Foods with a lower energy density provide fewer calories per gram than foods with a higher energy density.
Steps for a Gatorade vs Water experiment
The steps for a Gatorade vs Water experiment include the following:
Obtain parental permission in writing for all subjects
Step 1: Conduct the test for Gatorade:
a. Prepare drink for the subject
i. Wash hands in clean water
ii. Pour the liquid into a a clean measuring dish,( glass is preferred ) and measure out 250-ml
iii. Pour liquid into a clean disposable paper cup
b. Let the subject drink the 250ml of liquid being tested.
c. Take time interval of 20-40 minutes
d. Have the subject sit down for 2 minutes
e. Measure the pulse rate at the carotid artery and record your data
f. Repeat procedures d and e
g. Let the subject do 8 inch step-ups for 4 minutes
h. Take the pulse rate and record your data
i. Repeat procedures for g and h
Step 2. Conduct the water test. Repeat the step 1 with all other subjects.
Repeat all of step 2 with the same subjects using water instead of Gatorade.
Step 3 . Calculate the average for all the pulse rate data for each liquid.
What is an experiment?An experiment can be described as a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried.
Gatorade provide the carbohydrate and electrolytes needed for high intensity workouts.
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1. What eyes are the most sensitive to light?
2. Why?
3. What is the rarest hair color?
4. Why?
Answer:
1. Lighter in Color
2. Less Melanin
3. Red
4. Recessive genetic trait = necessary for both parents to carry the gene, whether or not they themselves are redheaded
Explanation:
Hope this helps.
Answer:
Explanation:
1. Lighter colored eyes like blue, hazel and green
2. Lighter colored eyes like blue, hazel and green have less of a pigment called 'melanin' than brown eyes do. Melanin helps protect the retina from UV damage and blue light, putting those with blue eyes at a higher risk of developing UV-related eye damage.
3. Natural red hair
4. Natural red hair is the rarest hair color in the world, only occurring in 1 to 2% of the global population. Since red hair is a recessive genetic trait, it is necessary for both parents to carry the gene, whether or not they themselves are redheaded. Due to this there are more people who carry the redhead gene, than there are people with red hair.
Not trying to be racist but uh....was Jesus actually white?- I WILL GIVE 100 POINTS AND BRAIN LIST TO THE PERSON WHO ANSWERS TRUTHFULLY!
Answer:
I'm pretty sure Jesus was white. In any paintings that were depicted of him he was a tall, pale, and thin man with light brown, long hair and a beard. I have a plate that hangs in my house on our wall with a picture of him and that is how he looks. And it also determined that he would have most likely looked like a typical Galilean Semite of his day. I believe that there were people of color in the biblical days but it was never proven that Jesus was, so I'm gonna say, no. Jesus is white.
Explanation:
Hope it helps! =D
Answer:
I would say no.
Explanation:
Despite the illustrations and paintings it would have been highly unlikely in the area he was born into to be white. I think the white illustrations may have just came from a prejudiced past when people actually believed race made someone better or worse.
( and no that doesn't mean I think he is black either , in his area it would be more common to just have a darker tone, so think lightskin when I say "Not white".) btw dont give me brainliest , if you cant tell this is the first question ive answered so im clearly not someone who needs it.
it is likely that in the future, humans will colonize mars. the population of martian humans could begin to show signs of genetic divergence over many generations. do you think this type of allopatric speciation would be more likely considered dispersal or vicariance?
According to the given statement Dispersal type of allopatric speciation would be more likely considered.
What does the term "allopatric" mean?An allopatric population or species is one that is geographically isolated from other comparable groups by an extrinsic barrier to dispersal. Allopatric means "in another place." From a biogeographic perspective, allopatric species or populations are those that do not share overlap geographic ranges.
What is an example of allopatric?Squirrels and other tiny mammals that had previously been a member of a single population could no longer communicate and procreate with each other across this new geographical barrier as Arizona's Grand Canyon created. Interbreeding was no longer possible. Allopatric speciation occurred in the squirrel population.
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WHY do dolphins hate sharks
Why do sharks avoid Dolphins?
Made of very strong and thick bone, dolphin snouts are biological battering rams. Dolphins will position themselves several yards under a shark and burst upwards jabbing their snout into the soft underbelly of the shark causing serious internal injuries. More than Peas in a Pod.
What are examples of star.
Answer:
Jjuiii
Explanation:
Hyuu8757u5
Answer:
torcularis septentrionalis
Explanation:
a binary star in the constellation of pisces, its visible to the nake5d eye, having an apparent visual magnitude of 4.27. based upon an annual parallax shift of 11.67 mas as seen from the earth, the system is located roughly 280 light-years from the sun.
Some of the traits in the chart are not simple cases of dominant and recessive. List those traits that show a blending of genes
Not every gene has a dominant or recessive form. Each allele in the gene pair may occasionally carry equal weight and manifest as a composite physical trait.
Why are genes so important?The building blocks of life are genes. They include instructions for constructing particular molecules and proteins that control how the body develops and functions and enable human cells to function. Additionally, they influence how certain physical traits and attributes, like hair or eye color, are expressed.
How are genes created?One copy is passed down to them by their mother through the egg, while the other is passed down by their father (via the sperm). The 23 chromosomes in each egg and sperm are all found in one pair. When the sperm fertilizes the egg, two copies of each chromosome and two copies of each gene are produced, resulting in the development of an embryo.
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9. Why can it be said that "without proper enzyme functioning, an organism will perish"?
Answer:All biological reactions within human cells depend on enzymes. Their power as catalysts enables biological reactions to occur usually in milliseconds
Explanation:i hope this helps :)
Enzymes are proteins that aid in the acceleration of metabolic processes, also known as the chemical reactions that take place in our bodies without which an organism will perish.
What is enzyme ?
Proteins are known as enzymes, and they play the role of biological catalysts by speeding up chemical reactions. The molecules on which enzymes may act are referred to as substrates, and the enzyme is responsible for converting the substrates into different molecules, which are referred to as products.
Enzymes are necessary for digestion, proper functioning of the liver, and many other bodily processes. Both an excess amount of a particular enzyme and a deficiency in that enzyme can be harmful to one's health. The enzymes that are found in our blood can also assist medical professionals in the diagnosis of illnesses and injuries.
Therefore, it can be said that "without proper enzyme functioning, an organism will perish".
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An accurate drawing of a bacteria cell would contain all of the following organelles EXCEPT a
An accurate drawing of a bacteria cell would contain all of the following organelles EXCEPT a Mitochondria (Option C)
What is the explanation for the above?Bacteria, like prokaryotes, do not typically have membrane-bound organelles in their cytoplasm and so have few major intracellular structures.
They lack a genuine nucleus, mitochondria, chloroplasts, and other eukaryotic cell organelles.
A typical bacterium's structure will have the following elements:
the pilusthe plasmidthe ribosomethe cytoplasmthe cytoplasmic membranethe cell wallthe capsulethe nucleoid, andthe flagellum.Bacteria have five characteristics: they are unicellular, prokaryotic, tiny, lack a nucleus, and have a plasma membrane. All bacteria have these characteristics.
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Full Question:
An accurate drawing of a bacteria cell would contain all of the following organelles EXCEPT a
Capsule.
Cell wall.
Mitochondria
Cytoplasm.
which role do ribosomes play in protein synthesis? answer ribosomes provide a site for trna to bind to mrna. ribosomes function in transcription. ribosomes provide a source of amino acids. ribosomes translate dna code to rna code. i don't know yet
The correct answer is option D: ribosomes translate DNA code to RNA code.
During protein synthesis, ribosomes translate DNA code to RNA code.
Universally, ribosomes are responsible for the synthesis of proteins through the translation of genetic information with the help of mRNA as they code particular amino acids which are the key units of protein synthesis.
These are manufactured as a result of the processing of genetic code into messenger RNA i.e. mRNA through triplet RNA basis known as codons.
Moreover, ribosomes also function as catalysts to accelerate the process of protein formation by continuously supplying amino acids to the polypeptide chain.
During this reaction, transfer RNA i.e. tRNA server as a carrier of amino acids to ribosomal sites where translation of DNA code to RNA code occurs for protein synthesis.
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Define and describe what a multifactorial disorder is. Give an example of a multifactorial disorder. Is it inevitable that an individual with the genetic propensity for that disease will get it? Why or why not? Using your best grammar, write 4-6 sentences.
A multifactorial disorder is a medical condition which is characterized by many factors influencing the symptoms of the disease which are seen or observed by the individual.
What is Multifactorial disorder?This disorder occurs when more than one factors influence the diseased condition. It may be as a result of the combination of genetic and environmental factors.
An example of multifactorial disorder are birth defects, high blood pressure etc and the individual with the genetic propensity for that disease will get it as a result of it also being influenced by the genes.
The genes are usually passed from the parent to offspring during reproduction which is therefore the reason why the individual will most likely get the disease and is therefore the most appropriate choice.
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Identify each description as typical of eukaryotic repressors or bacterial repressors. Leave unplaced the description that is not characteristic of either group.
RNA polymerase is directly inhibited by Eukaryotic Repressors when they attach to DNA-binding sites on the enzyme.
An operator downstream of the promoter site is bound by bacterial repressors, which prevent RNA polymerase from working.
How do activators and repressors function in eukaryotes?Eukaryotic cells have transcriptional inhibitors much like prokaryotic cells do. The binding of transcriptional repressors to enhancer or promoter regions prevents transcription. Repressors react to outside stimuli in a manner similar to transcriptional activators in order to block the binding of activating transcription factors.
What elements are necessary for eukaryotic transcription?Eukaryotes need transcription factors to bind to the promoter area first and then assist in enlisting the proper polymerase. The polymerase that transcribes mRNA is called RNA Polymerase II.
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list the steps of glycolysis. start at the top of the list with the point at which glucose enters, list the steps and finish at the bottom of the list with the point at which pyruvate is produced.
The steps of glycolysis are as given below:
Conversion of glucose to glucose-6-phosphate by hexokinaseConversion of glucose-6-phosphate to fructose-6-phosphate by phosphoglucoisomerasePhosphorylation of fructose-6-phosphate to fructose-1,6-bisphosphate by phosphofructokinase-1Splitting of fructose-1,6-bisphosphate to glyceraldehyde-3-phosphate and dihydroxyacetone phosphate by aldolaseisomerization of dihydroxyacetone phosphate to glyceraldehyde-3-phosphate by triose phosphate isomeraseOxidation of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate by glyceraldehyde-3-phosphate dehydrogenaseConversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate and the production ATP by phosphoglycerate kinaseconversion of 3-phosphoglycerate to 2-phosphoglycerate by phosphoglycerate mutaseDehydration of 2-phosphoglycerate to phosphoenol pyruvate by enolaseConversion of phosphoenol pyruvate to pyruvate and the phosphorylation of ADP to ATP.What is glycolysis?Glycolysis refers to a series of reaction steps by which one molecule of glucose is broken down into two molecules of pyruvate with the release of two net molecules of ATP.
There are the reaction steps in glycolysis all of which are catalyzed by enzymes.
Glycolysis takes place in the cytoplasm of cells.
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points that lie in the same plane
points that lie on the same line
a point that lies in the middle of two other
points
to cut into two equal parts
a fact that is accepted as true without proof
[Choose ]
[Choose ]
[Choose ]
[Choose ]
[Choose ]
Co-planar points are points that lie in the same plane.
Midpoints are a point that lies in the middle of two other points.
Bisect means to cut into two equal parts.
What are Coplanar points?When it comes to geometry, a group of points in space is said to be coplanar if a single geometric plane contains them all.For instance, three points are always coplanar, and the plane they determine is unique if the points are distinct and non-collinear. In contrast, a group of four or more different points won't typically lay in the same plane.Collinear points are those that are located along the same line.Points on the same plane are referred to as coplanar points.In three dimensions, two lines are said to be coplanar if a plane encompasses both of them. If the lines are parallel or if they cross one another, this happens.Coplanar points or lines are those that lie in the same plane.To learn more about co-planar points, refer
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Which of the following conditions will result in the lowest rabbit population?
a.
ample land, cold springs
b.
little land, normal conditions
c.
moderate land, hot summers
d.
ample land, harsh winters
NSWER is B
The correct answer from among the conditions above which will definitely result in the lowest rabbit population is ample land, harsh winters.
The correct answer choice is option D.
How can rabbit population be reduced by ample land and harsh winters?It is not surprising that ample space is very essential for the growth and development of any population of species of living organisms. However there are certain conditions tok which an ample space or surplus space can come with which will still reduce population of species.
Rabbit population can be reduced to its lowest even in a surplus or plentiful land if the weather conditions is not favorable for their growth, development and population. A hash weather conditions such as harsh winter or harsh cold can reduce the population of species of rabbit population.
In conclusion, harsh weather conditions like very cold factors can impede the rise of rabbit population in a given habitat or environment.
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how abiotic factors limit the dynamic of community?
This is how abiotic factors limit the dynamic of community-
The ecology of high altitudes, especially the alpine forest, has historically been thought to be dominated by abiotic causes. Altitude, regional climate, and orographics can all have a significant impact on sunlight, temperature, water, and gas-phase nutrients (such CO2 and O2) (e.g., maritime vs. continental mountain ranges). In addition, a number of elements, including as solar and long-wave radiation, wind, and ambient humidity, that affect the energy balance and temperature of leaves may also change with elevation.
What are abiotic factors?Abiotic components or abiotic factors or variables are non-living chemical and physical elements of the environment that have an impact on living things and the health of ecosystems in biology and ecology. Biology as a whole is supported by abiotic causes and the phenomena that go along with them.
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b O 1. Identify a from the above diagram of an atom: 2. Identify b from the above diagram of an atom: 3. Identify c from the above diagram of an atom:
Answer:
A is electron
B is neutron
C is proton
Explanation:
electron is negative charged particle which sorround the nucleus
neutron is neutral charged particle which located in nucleus
proton is positive charged particle
NEED SOME HELP PLEASE!! :)
7. Why is it impossible for a paper clip to contain the enzyme catalase?
The enzyme catalase cannot be found in a paper clip because the enzyme is only produced by the liver of living cells.
What is catalase?Catalase is the enzyme found in the liver that catalyses the decomposition of hydrogen peroxide to water and oxygen.
Catalase is a common enzyme found in nearly all living organisms exposed to oxygen which catalyzes the decomposition of hydrogen peroxide to molecular water and oxygen.
According to this question, it is impossible for a paper clip to contain the enzyme catalase because it is produced by the liver, which is an organ that is found only in living cells.
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when a molecule of oxygen moves from outside of a eukaryotic cell to eventually be reduced by complex iv of the electron transport chain, how many phospholipid bilayers does it need to cross?
Answer: You, like many other organisms, need oxygen to live. As you know if you’ve ever tried to hold your breath for too long, lack of oxygen can make you feel dizzy or even black out, and prolonged lack of oxygen can even cause death. But have you ever wondered why that’s the case, or what exactly your body does with all that oxygen?
As it turns out, the reason you need oxygen is so your cells can use this molecule during oxidative phosphorylation, the final stage of cellular respiration. Oxidative phosphorylation is made up of two closely connected components: the electron transport chain and chemiosmosis. In the electron transport chain, electrons are passed from one molecule to another, and energy released in these electron transfers is used to form an electrochemical gradient. In chemiosmosis, the energy stored in the gradient is used to make ATP.
So, where does oxygen fit into this picture? Oxygen sits at the end of the electron transport chain, where it accepts electrons and picks up protons to form water. If oxygen isn’t there to accept electrons (for instance, because a person is not breathing in enough oxygen), the electron transport chain will stop running, and ATP will no longer be produced by chemiosmosis. Without enough ATP, cells can’t carry out the reactions they need to function, and, after a long enough period of time, may even die.
In this article, we'll examine oxidative phosphorylation in depth, seeing how it provides most of the ready chemical energy (ATP) used by the cells in your body.
Overview: oxidative phosphorylation
Simple diagram of the electron transport chain. The electron transport chain is a series of proteins embedded in the inner mitochondrial membrane. In the matrix, NADH and FADH2 deposit their electrons in the chain (at the first and second complexes of the chain, respectively). The energetically "downhill" movement of electrons through the chain causes pumping of protons into the intermembrane space by the first, third, and fourth complexes. Finally, the electrons are passed to oxygen, which accepts them along with protons to form water. The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP. Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP.
Simple diagram of the electron transport chain. The electron transport chain is a series of proteins embedded in the inner mitochondrial membrane.
In the matrix, NADH and FADH2 deposit their electrons in the chain (at the first and second complexes of the chain, respectively).
The energetically "downhill" movement of electrons through the chain causes pumping of protons into the intermembrane space by the first, third, and fourth complexes.
Finally, the electrons are passed to oxygen, which accepts them along with protons to form water.
The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP. Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP.
Explanation:
hope this helps