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Shalnov [3]
3 years ago
7

Which of the following is NOT true of enzyme activity? a. enzyme shape may change during catalysis b. the active site on an enzy

me orients its substrate molecules, therby promoting interaction of their reactive parts c. all enzymes have an active site where substrates are temporarily bound d. each enzyme can catalyze a wide variety of different reactions
Biology
1 answer:
Jobisdone [24]3 years ago
5 0

Answer:

D. Each enzyme can catalyze a wide variety of different reactions

Explanation:

Each enzyme can only catalyze a few, specific types of reactions.

Since enzymes and substrates are very specific to one another, enzymes cannot catalyze a wide variety of reactions.

If a substrate is not the correct one that fits in the enzyme's active site, a reaction will not occur.

So, each enzyme can only assist in a few reactions.

The correct answer is D. Each enzyme can catalyze a wide variety of different reactions

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Zanzabum

Answer:

Different genes are expressed in different cells

Explanation:

The instruction is provided to the cell by the genetic material in the form of genes. Genes are the physical segment present on the DNA which can code for a specific protein.

The genes are present in the cells in the condensed form called chromosome which is present in all the cells of the body.

Although all the cells contain the same type of chromosomes or genes but they differentiate to perform different functions.

The differentiation process involves the expression of different genes in different cells as a result of which different proteins are formed in different cells and they perform different functions.

6 0
3 years ago
When light strikes the second medium what are the two things that happen?
antiseptic1488 [7]
Reflection and refraction
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3 years ago
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Explain why a person at 14,000 ft would weigh less than a person at sea level, 0 ft.
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Answer:

because gravity under water with put more weight on you causing you to sink but if you were falling you will be maintaining you weight while falling  

Explanation:

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2 years ago
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What is the unique structural modification in lymphatic capillaries that increases their permeability?
KonstantinChe [14]

Answer:

Minivalves

Explanation:

Lymphatic capillaries are so much permeable that some researchers thought that they are open from one side but scientists found that this permeability is due to some structural modification.

The endothelial cell that forms the lymphatic capillaries wall are not packed tightly and overlap each other very loosely which makes easy openings in the structure called mini valves.

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7 0
3 years ago
Two competing hypotheses to account for the increase in the number of Hox genes from the last common ancestor of bilaterians to
Tomtit [17]

Answer:

The duplication of a cluster of four Hox genes is equally likely as the duplication of a single Hox gene.

Explanation:

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Since three independent duplications of an individual Hox gene is in  evolutionary terms, more complex than a single duplication or a cluster, then that hypothesis would be the most parsimonious.

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2 years ago
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