Question

QUESTION 1 Which of the following does NOT apply to an enzyme? A. Catalyst B. Inorganic...

QUESTION 1

Which of the following does NOT apply to an enzyme?

A.

Catalyst

B.

Inorganic

C.

Protein

D.

All apply to an enzyme

QUESTION 2

When an enzyme catalyzes a reaction:

A.

Substrate(s) bind in the active site

B.

Products bind in the active site

C.

The shape of the enzyme remains unchanged

D.

The enzyme is consumed by the reaction

QUESTION 3

Which of the following would interfere most with the ability of an enzyme to catalyze a reaction?

A.

Reduced concentration of substrate available

B.

Reduced concentration of product available

C.

Increased concentration of substrate available

D.

A change in the pH

QUESTION 4

Feedback mechanisms regulate the rate of enzyme activity, effectively "turning off" an enzyme in a reversible way until more product is needed. Which of the following would be most effective as a feedback mechanism?

A.

Reduced concentration of product

B.

Increased concentration of substrate

C.

A change in pH

D.

Temporary binding of a non-substrate molecule in the active site

QUESTION 5

Which of the following statements is accurate in describing the activity of the lactase enzyme?

A.

Lactase can function equally effectively at many different pH levels

B.

The shape of lactase does not change during the reaction

C.

One lactase enzyme can catalyze many reactions

D.

Lactase is converted to glucose and galactose by the reaction

Homework Answers

Answer #1

Question number 1 - option D Enzymes are biocatalyst in which main part is proteinous and inorganic ion are needed for complete function Enzyme formation.

Question number 2 - Substrate bond with enzyme and form enzyme substrate complex. Than the enzyme increase the reaction rate by decreasing the activation energy.

Question number 3- Enzyme are work on a definate pH known as optimum pH . If we change the pH Enzyme activity decrease . More ever some enzymes are activated only at a specific pH .

Question number 4- As we increase the substrate concentration the rate of reaction increase and more product form and it can feedback the reaction rate.

Question number 5 - Lactose is converted into glucose and galactose by the lactase enzyme for the easy absorption .

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