Enzyme Function and Activity Concepts

Enzyme Function and Activity Concepts

Assessment

Interactive Video

Biology

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video provides an interactive lecture on enzymes, explaining their role as catalysts in speeding up chemical reactions without being consumed. It covers enzyme structure, active sites, and substrate specificity, using the lock and key model. The concept of activation energy and how enzymes lower it to facilitate reactions is discussed. Factors affecting enzyme activity, such as temperature, pH, and substrate concentration, are explored. The video concludes with industrial applications of enzymes, including enzyme immobilization for producing lactose-free milk.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary role of enzymes in the body?

To store energy

To act as a catalyst in chemical reactions

To transport oxygen

To provide structural support

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term used to describe the specific fit between an enzyme and its substrate?

Induced fit model

Lock and key model

Substrate inhibition model

Random collision model

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do enzymes affect the activation energy of a reaction?

They increase it

They decrease it

They have no effect

They eliminate it

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to enzyme activity when the temperature is too high?

It decreases due to denaturation

It remains constant

It increases indefinitely

It doubles

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which factor does NOT affect enzyme activity?

Temperature

pH

Color of the enzyme

Substrate concentration

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of a pH shift from the optimal range on enzyme activity?

It doubles the enzyme activity

It enhances enzyme activity

It has no effect

It can denature the enzyme

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of increasing substrate concentration beyond a certain point?

Enzyme activity becomes unpredictable

Enzyme activity stagnates

Enzyme activity decreases

Enzyme activity continues to increase

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