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elena55 [62]
3 years ago
13

A chemist looking to enhance parenteral nutrition attempts to create amino acids and sugars in the lab that are produced natural

ly in the body. he finds that his workups consistently produce racemic mixtures of the amino acids that the body normally synthesizes and uses in only a single enantiomeric form. the most likely reason for this distinction is that:
Biology
1 answer:
shutvik [7]3 years ago
7 0
<h2>Enantiomer </h2>

Explanation:

The most likely reason for the given type of distinction is that the enzymes the body uses are typically stereospecific and only produce one enantiomer

Many of the enzymes used in the body are stereospecific - they will only react with one particular stereoisomer form of a molecule and will only catalyze a reaction that produces a particular isomer of the product

Often drugs are administered as a racemic mixture because work in the lab produces such a mixture even though only one of the isomers has any biological effect

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which statement correctly compares and contrast the three stages of cellluar respiration that occurs in the presence of oxygen
Lapatulllka [165]
<h2><u>Full Question:</u></h2>

Which statement correctly compares and contrasts the three stages of cellular respiration that occur in the presence of oxygen? Each stage occurs in the mitochondria, but only the final stage produces ATP. Each stage produces ATP, but only the third stage occurs in the mitochondria. Each stage produces ATP, but only the first stage occurs in the cytoplasm. Each stage occurs in the cytoplasm, but only the final stage produces ATP.

<h2><u>Answer</u>:</h2>

Each stage produces ATP, but only the first stage occurs in the cytoplasm.

<h3><u>Explanation</u>:</h3>

Cellular respiration is the process by which the glucose or any respiratory substrate is burned down inside a cell producing ATP or energy. This process of cellular respiration is seen in each and every living cell. The glucose is burned in the cytoplasm of the cell producing the pyruvate. This pyruvate is decarboxylated into Acetyl CoA and transferred inside the mitochondria. So the glycolysis or the 1st step of cellular respiration occurs in cytoplasm and rest inside the mitochondria.

ATP is produced from each astep of cellular respiration. So the correct option is option C.

4 0
3 years ago
The 14 different species of finches in the galapagos islands originated from a single ancestral species. what is it about these
Daniel [21]
<span>These islands have different ecologies and most are not connected to each other by landmass. Therefore, the organism adapt to each of the different ecologies on their islands. These populations were physically separated due to lack of connection to each other and would not breed randomly. They therefore formed different species by allopatric speciation.</span>
8 0
3 years ago
Which of the following is a decomposer? A. Grasshopper B. Sunlight C. Tadpole or D. Earthworm
romanna [79]

Earthworms are decomposers



5 0
3 years ago
Read 2 more answers
At which point on a cladogram do two species share an ancestor?.
anyanavicka [17]

Answer:

The node

Explanation:

Each branch point on the cladogram represents where species split off into new ones. The node represents the last point at which 2 new species shared a common ancestor.

8 0
2 years ago
Which of the following explains why water is a good solvent for polar and ionic compounds?
Anni [7]

Hi there!

<u>Electronegativity</u> is the concept of how likely an atom is to attract the shared molecules in one of these bonds to itself. We know the molecule water is made up of two hydrogens and one oxygen. The electronegativity of hydrogen is 2.2, and oxygen 3.4. An <u>ionic bond</u> needs at least a difference in electronegativity of 1.6. As the difference is less than that, we can say that water is a covalent molecule. This then wipes out choice B, because it is not ionic, and C, as we have seen it is actually covalent.

Now, we can see the difference in electronegativity between oxygen and hydrogen is still 1.2. This means that while it is not at the point for there to be an ionic bond, there is still a difference in attraction, where the electrons will tend to favor the oxygen more and 'hang around it' more. As electrons are <u>negatively charged</u><em><u>,</u></em> this means that the oxygen will gain a slightly negative charge. This then makes the molecule polar, because it now has a charge within the molecule. This means we have our answer, choice D.

In terms of hydrophobic molecules - they tend to be ones without a charge. (If you're interested in this kind of stuff, I'd search hydrophobic up, and possibly also look into hydrogen bonds).

Hope this helps! Feel free to ask me any other questions you have about this specific problem.

6 0
3 years ago
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