Question

Cellular respiration is a series of complicated reactions. Some of the enzymes that are necessary for the reactions to take place effectively are not produced by the body and must be eaten in a person’s diet. Which answer correctly explains what happens when a person's diet lacks the necessary enzymes for cellular respiration?
The production of ATP will increase as the enzyme decreases.

The cellular respiration reactions will use another available enzyme.

The cellular respiration reaction rate that uses the missing enzyme will increase.

The cell's energy level will diminish as the e

Answer 1

(end to last answer choice) enzyme decreases

Answer 2

This question doesn't really make sense...ALL enzymes used naturally in the body are produced by the body - they're encoded by the DNA in each cell. In fact, many enzymes and other proteins that are consumed are actually broken down into their constituent peptides or amino acids by proteases in small intestine and so wouldn't function anyways.

The question probably meant that certain AMINO ACIDS must be consumed in the diet (these are known as "essential amino acids") because the body cannot produce them. If amino acids aren't available to construct enzymes involved in cellular respiration, energy production and thus energy content in the cell will decrease.

Answer 3

Let's look at all our choices.
And I'll talk a little about each one.

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A. The production of ATP will increase as the enzyme decreases. (True or False?)

Here's a fact:

Cellular respiration produces ATP.

And in order to cellular respiration to happen, we need the right enzymes.

Now...how would the production of ATP increase,
if the enzymes decrease??

Does that make sense to you?

~~~~~~~~~

B. The cellular respiration reactions will use another available enzyme. (True or False?)

Here's a fact:

Every type of enzyme is made for one type of chemical reaction.

If a certain chemical reaction doesn't have the enzyme it needs,
it cannot just use another enzyme.

~~~~~~~~~~~~~

C. The cellular respiration reaction rate that uses the missing enzyme will increase. (True or False?)

Here's a fact:

Enzymes increase chemical reaction rates.
They make chemical reactions happen faster.

Here's a question:
If the enzyme for a chemical reaction is missing,
then how would the reaction rate increase??

Would that make sense to you?

~~~~~~~~~~

D. The cell's energy level will diminish as the enzyme decreases. (True or False?)

Here's a fact:

We need enzymes for cellular respiration.

And cellular respiration produces energy for the cell.

Take a look at D, again.

Does it make sense to you?

Answer 4

You definitely did clarify everything for me. This question, as matt101 was very confusing. Thank you, I understand now! :)

Answer 5

I do think that matt101 was right in what he said:

Enzymes are proteins. And all proteins are made in the body.

But proteins are made of amino acids.
And amino acids are what we need to eat.

In other words, he just thought that the question was a bit poorly written. And so do I.

But you're welcome anyway. =)

Answer 6

I like your explanations above, @InYourHead :) And glad I could contribute!

Answer 7

=)

Thanks, I appreciate your compliment.

You did make a point that I never really thought about.

That our bodies assemble all the proteins,
but they don't assemble amino acids.

Answer 8

Well you both helped me to get the answer correct, so thank you! :)

Answer 9

So, from what I understood, the answer is D?

Answer 10

Yes - D is the correct answer!