Enzymes: Understanding Enzyme Activity

Enzymes: Understanding Enzyme Activity

8th Grade

11 Qs

quiz-placeholder

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Enzymes: Understanding Enzyme Activity

Enzymes: Understanding Enzyme Activity

Assessment

Quiz

Biology

8th Grade

Medium

Created by

Ashley Sheffield

Used 36+ times

FREE Resource

11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is enzyme-substrate specificity?

Enzyme-substrate specificity is the concept that each enzyme can catalyze reactions with any type of substrate.

Enzyme-substrate specificity means that enzymes can only catalyze reactions with non-specific substrates.

Enzyme-substrate specificity refers to the ability of enzymes to catalyze multiple types of reactions with various substrates.

Enzyme-substrate specificity is the concept that each enzyme catalyzes only one type of reaction with one specific substrate.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain the lock and key model of enzyme-substrate interaction.

The lock and key model of enzyme-substrate interaction involves the enzyme changing its shape to fit the substrate

The lock and key model of enzyme-substrate interaction describes the specific and complementary fit between the enzyme's active site and the substrate, similar to how a lock and key fit together.

The lock and key model of enzyme-substrate interaction only applies to a few specific enzymes and substrates

The lock and key model of enzyme-substrate interaction is based on the idea that any enzyme can bind to any substrate

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the induced fit model describe enzyme-substrate interaction?

The induced fit model describes enzyme-substrate interaction as a dynamic process where the active site of the enzyme changes its shape to better fit the substrate.

The induced fit model describes enzyme-substrate interaction as a process where the enzyme and substrate do not interact

The induced fit model describes enzyme-substrate interaction as a static process where the active site of the enzyme remains unchanged

The induced fit model describes enzyme-substrate interaction as a process where the substrate changes its shape to fit the enzyme

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the four factors that can affect enzyme activity?

Time, pH, temperature, pressure

Temperature, pH, substrate concentration, enzyme concentration

colour, pH, temperature, enzyme concentration

enzyme concentration, substrate concentration, time, pressure

Temperature, pH, concentration, and presence of inhibitors

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does temperature affect enzyme activity?

Enzyme activity increases continuously with temperature

Temperature has no effect on enzyme activity

Enzyme activity decreases with temperature due to increased enzyme stability

Temperature affects enzyme activity by changing the enzyme's shape and the rate of molecular collisions. As temperature increases, enzyme activity generally increases up to an optimal point, after which the activity rapidly decreases due to denaturation of the enzyme.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain the effect of pH on enzyme activity.

Changes in pH can denature the enzyme, altering its shape and therefore its function. Each enzyme has an optimal pH at which it functions best.

pH has no effect on enzyme activity

Enzymes become more efficient at extreme pH levels

Enzymes are not affected by changes in pH

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does substrate concentration affect enzyme activity?

Enzyme activity decreases linearly with increasing substrate concentration

Increasing substrate concentration initially increases enzyme activity until saturation is reached.

Substrate concentration has no effect on enzyme activity

Decreasing substrate concentration increases enzyme activity

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