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Enzyme Biology: Substrate and Enzyme Concentration

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Enzyme Biology: Substrate and Enzyme Concentration

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Questions and Answers

What happens to the reaction rate when the concentration of enzymes is increased beyond the maximum level?

The reaction rate remains constant (correct)

The reaction rate becomes zero

The reaction rate decreases

The reaction rate increases further

What is the effect of increasing temperature on the reaction rate of an amylase enzyme?

It has no effect on the reaction rate

It increases the reaction rate at all temperatures

It increases the reaction rate up to an optimum temperature and then decreases (correct)

It always decreases the reaction rate

What is the state of the active sites of enzymes at the maximum reaction rate?

Some active sites are saturated with substrate

Only one active site is saturated with substrate

No active sites are saturated with substrate

All active sites are saturated with substrate (correct)

What happens to an enzyme when the temperature exceeds the optimum temperature?

It becomes less active Signup and view all the answers

What is the purpose of the experiment described in the problem statement?

To study the effect of temperature on enzyme activity Signup and view all the answers

What happens to the rate of enzyme reaction when the concentration of enzymes is doubled?

The rate of reaction is doubled Signup and view all the answers

What is the limiting factor at the maximum rate of reaction?

Substrate concentration Signup and view all the answers

What happens to the rate of reaction when the concentration of substrate is increased?

The rate of reaction increases Signup and view all the answers

What is the effect of adding more substrate to a reaction at the maximum rate?

The rate of reaction increases Signup and view all the answers

What is denaturation of an enzyme?

A change in the structure of the enzyme Signup and view all the answers

What happens to the rate of reaction when the active sites of the enzyme are fully occupied?

The rate of reaction reaches a maximum Signup and view all the answers

What is the effect of an increase in temperature on the rate of biochemical reactions controlled by enzymes?

The rate of reaction doubles with every 10°C rise in temperature Signup and view all the answers

What happens to enzymes when the temperature reaches 60°C?

The enzymes become denatured Signup and view all the answers

What is the optimal temperature for enzyme reactions in the human body?

37°C Signup and view all the answers

What happens to the active site of enzymes when they become denatured?

It changes and does not complement the substrate Signup and view all the answers

What affects the rate of biochemical reactions controlled by enzymes, apart from temperature?

Enzyme concentration and substrate concentration Signup and view all the answers

What is the effect of reaching the optimal temperature on the enzyme reaction rate?

The rate is at its maximum Signup and view all the answers