Enzyme Action

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Which term describes the pocket-like structure on the enzyme surface where the substrate can bind?

Active site (correct)
Inactive site
Substrate site
Catalytic site

What is the effect of a change in pH on enzyme action?

It can affect the enzyme's activity (correct)
It has no impact on the enzyme's function
It increases the enzyme's specificity
It decreases the enzyme's affinity for substrates

In lab experiments assessing enzyme action, what is used as the substrate when catalase is used as the enzyme?

Hydrochloric acid (HCl)
Hydrogen peroxide (H2O2) (correct)
Sodium hydroxide (NaOH)
Sodium chloride (NaCl)

What type of reactions are involved in metabolism?

Both anabolic and catabolic reactions (B) Signup and view all the answers

What is the function of catalase?

Break down H2O2 into oxygen and water (D) Signup and view all the answers

In the enzyme specificity experiment, what is the purpose of filling the tubes with H2O, sucrose, and H2O2?

To observe the catalase's effect on different substances (D) Signup and view all the answers

What is the purpose of the temperature & enzyme activity experiment?

To test the effect of temperature on enzyme activity (C) Signup and view all the answers

In the enzyme concentration experiment, what is being tested?

The effect of varying catalase concentration on reaction rate (C) Signup and view all the answers

What does the substrate concentration experiment primarily investigate?

The effect of varying H2O2 concentration on reaction rate (D) Signup and view all the answers

What is being tested in the pH and enzyme activity experiment?

The impact of different pH levels on enzyme activity (B) Signup and view all the answers

What happens when catalase uses H2O2?

It breaks down H2O2 into oxygen and water (D) Signup and view all the answers

What is the primary function of an enzyme in a biological system?

To speed up chemical reactions (B) Signup and view all the answers

What is the effect of an increase in temperature on enzyme activity?

It increases enzyme activity (B) Signup and view all the answers

What is the significance of the active site in enzyme action?

It is where the substrate can bind to the enzyme (A) Signup and view all the answers

How does a change in pH affect enzyme action?

It decreases or increases enzyme activity depending on the pH level (C) Signup and view all the answers

What is the purpose of the enzyme specificity experiment described in the text?

To determine the effectiveness of catalase in breaking down H2O2 compared to other substances (B) Signup and view all the answers

In the temperature & enzyme activity experiment, what is the primary purpose of placing the tubes in different temperature conditions before adding H2O2?

To observe the effect of temperature on catalase activity (C) Signup and view all the answers

What is being tested in the enzyme concentration experiment described in the text?

The impact of varying amounts of catalase on enzyme activity (C) Signup and view all the answers

In the substrate concentration experiment, what is the primary focus?

Assessing how varying amounts of H2O2 impact catalase activity (C) Signup and view all the answers

What is one substance that catalase helps to oxidize in the body?

Formaldehyde (D) Signup and view all the answers

What is the primary focus of the temperature & enzyme activity experiment?

To observe the effect of varying temperatures on catalase activity (B) Signup and view all the answers

In metabolism, which type of reaction involves substrates being joined together to form products?

Anabolic (D) Signup and view all the answers

What term describes the pocket-like structure on the enzyme surface where the substrate can bind?

Active site (A) Signup and view all the answers

What is the effect of an increase in temperature on enzyme activity?

Initially increases activity, then denatures the enzyme at high temperatures (D) Signup and view all the answers

Enzyme specificity experiment involves testing the enzyme's ability to break down different substances

True (A) Signup and view all the answers

In the substrate concentration experiment, the tubes are filled with catalase before adding H2O2

False (B) Signup and view all the answers

The pH and enzyme activity experiment investigates the effect of different pH levels on catalase activity

True (A) Signup and view all the answers

Catalase primarily helps to break down harmful toxins in the body, such as formaldehyde and formic acid

True (A) Signup and view all the answers

Enzymes are biological catalysts that slow down the chemical reactions in our body

False (B) Signup and view all the answers

Anabolic metabolism involves the breakdown of substrates to form products

False (B) Signup and view all the answers

Enzyme activity is not affected by changes in concentration of substrate and enzyme

False (B) Signup and view all the answers

Catalase is used as the enzyme and HCL is used as the substrate in the lab experiments assessing enzyme action

False (B) Signup and view all the answers

Enzyme action is not affected by changes in pH

False (B) Signup and view all the answers

What is one substance that catalase helps to oxidize in the body?

H2O2 (A) Signup and view all the answers

Active Site

The specific region on the enzyme's surface where the substrate binds to initiate the chemical reaction.

Enzyme Action

The process by which enzymes accelerate chemical reactions in biological systems.