Plz help its my last question i will give brainliest Which of the following is true regarding enzymes?

Choose 1

Choose 1

(Choice A)

A

Enzymes can only be used once during a reaction.

(Choice B)

B

Enzymes are reusable.

(Choice C)

C

Enzymes are usually carbohydrates.

(Choice D)

D

Enzymes denature at their optimum temperatures.

the answer is b.) hydrogen bonds between bases.

the correct answer is 2 and 4

i think its both a and b

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.