Enzymes Review

Front

What is the purpose of an enzyme?

Back

speed up reactions

Front

How do enzymes increase the rate of a chemical reaction within a living cell? Options: reducing the number of products, reducing the activation energy, increasing the temperature of the cell, increasing the concentration of reactants.

Back

reducing the activation energy

Front

What is structure A? Options: Substrate, Active site, Enzyme, Products

Back

Substrate

Front

What is structure D? Options: Substrate, Active site, Enzyme, Products

Back

Active site

Front

What is structure C? Options: Substrate, Active site, Enzyme, Products

Back

Products

Front

What is structure E, F, G? Options: Substrate, Active site, Enzyme, Products

Back

Enzyme

Front

Which of the following conclusions can be drawn from this graph?
Options:
- The optimum pH of the enzyme is 6.6.
- The optimum pH of the enzyme is 5.8
- The enzyme’s activity increases as pH increases 5.0 to 9.0
- The enzyme’s activity is greater around pH of 8.0 .

Back

The optimum pH of the enzyme is 6.6.

Front

What is the name for the mechanism of enzyme activity? Options: Lock and key, jigsaw puzzle, hammer and nail, two hands pattern

Back

Lock and key

Front

Which of these is NOT true? Enzymes can denature (change shape) when the temperature gets too high. Enzymes can only be used once in a chemical reaction. Extreme pH can denature enzymes. Enzymes speed up chemical reactions.

Back

Enzymes can only be used once in a chemical reaction.

Front

What happens when enzymes are heated to a high temperature?

Back

The shapes of the enzyme are altered denature