Question

Nothing!

Answer 1

what do you think?

Answer 2

hmmm...I'm not sure ask @abhisar or @Somy or @iGreen

Answer 3

I'm not a Bio person..I'm a math person.

Answer 4

I'm not sure, but I know you need carbs for energy, so C or D?

Answer 5

D

Answer 6

For your first question, carbohydrates-monosaccharides is correct. As an FYI, you also have nucleic acids-nucleotides, fats-fatty acids, and proteins-amino acids.

For your second question, carbohydrates are your best bet, because they are the preferred source of energy in the body. While you can get energy from protein as well, it is preferentially used to build up proteins within the body. Excess carbs are also readily converted into glycogen, which acts as a short-term energy storage macromolecule that's great for short periods of activity, such as a race. Pasta is rich in starch, which, like glycogen, is a carbohydrate macromolecule. Answer is C.

For #15, an inhibitor is something that blocks the enzyme. You might also see it referred to as an antagonist. An activator (or agonist) is something that (surprise) activates or enhances the enzyme. These types of modulators more commonly affect the enzyme (the catalyst) rather than the substrate. D is the answer.

For #16, you can see that C will be your answer by just looking at the second half of each option, because the second half in C is the only second half that makes any sense. At any rate, the first half is also correct. A cofactor is an example of an activator, and in fact these are often necessary for proper enzyme function. What's special about a cofactor specifically is that it is not a protein itself, but some other organic molecule. For instance, the heme group in hemoglobin is a cofactor that is required for O2 to be able to bind to the protein. Many vitamins also act as cofactors for a variety of proteins.

The last two questions are a bit more involved and I don't have time at the moment to go into detail about either, but hopefully this will give you a good start! If you don't understand something in what I wrote then let me know.