A base is a substance that

releases Hydroxide ions when dissolved in water

releases Hydrogen ions when dissolved in water

does not release any ions when dissolved in water

The enzyme known as catalase breaks down hydrogen peroxide molecules into separate water and oxygen molecules. During this reaction, what happens to the catalase?

It becomes the products O2 and H20

It is fully used up and discarded

It changes from catabolic to anabolic

Biochemistry Class 12 MCQ Questions With Answers Quiz

13.

The pH of blood in humans

is lowest at birth and gradually increases with age up to a maximum level

is different for men and women

varies with the activity level of the individual

is highest at birth and gradually decreases to a minimum level

is normally 7.4 and resists change at all times

1.

A substrate attaches to an enzyme at the

2.

The digestive system breaks down large food molecules into smaller ones. This process releases energy for the body. What type of metabolism is this?

3.

A base is a substance that

4.

The enzyme known as catalase breaks down hydrogen peroxide molecules into separate water and oxygen molecules. During this reaction, what happens to the catalase?

5.

___________ are the main source of energy for cells.

6.

A pH of 3 is how many times more acidic than a pH of 5?

7.

Which of the following is correctly matched?

8.

Which is the monomer (building block) for nucleic acids?

9.

A(n) __________ is the part of the enzyme the substrate fits into.

10.

Phospholipids have a _ head and a __ tail.

11.

Waterproofs, insulates, and stores energy long-term

12.

The attraction of water molecules to other water molecules.

13.

The pH of blood in humans

14.

Animals store carbohydrates as _ while plants store carbohydrates as .

15.

Two oxygen atoms bond together to create Oxygen gas. Which term best describes this type of matter?

16.

Amino acids are the small molecules in which biomolecule?

17.

The particle involved in chemical reactions is the

18.

Excess carbohydrates are stored as this biomolecule

19.

Charged particles are called...

20.

These organic molecules are used by the body to store the genetic code.

Time

1. A substrate attaches to an enzyme at the

2. The digestive system breaks down large food molecules into smaller ones. This process releases energy for the body. What type of metabolism is this?

3. A base is a substance that

4. The enzyme known as catalase breaks down hydrogen peroxide molecules into separate water and oxygen molecules. During this reaction, what happens to the catalase?

5. ___________ are the main source of energy for cells.

6. A pH of 3 is how many times more acidic than a pH of 5?

7. Which of the following is correctly matched?

8. Which is the monomer (building block) for nucleic acids?

9. A(n) __________ is the part of the enzyme the substrate fits into.

10. Phospholipids have a _________ head and a __________ tail.

11. Waterproofs, insulates, and stores energy long-term

12. The attraction of water molecules to other water molecules.

13. The pH of blood in humans

14. Animals store carbohydrates as _______________ while plants store carbohydrates as ______________.

15. Two oxygen atoms bond together to create Oxygen gas. Which term best describes this type of matter?

16. Amino acids are the small molecules in which biomolecule?

17. The particle involved in chemical reactions is the

18. Excess carbohydrates are stored as this biomolecule

19. Charged particles are called...

20. These organic molecules are used by the body to store the genetic code.

Time

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1.

A substrate attaches to an enzyme at the

2.

The digestive system breaks down large food molecules into smaller ones. This process releases energy for the body. What type of metabolism is this?

3.

A base is a substance that

4.

The enzyme known as catalase breaks down hydrogen peroxide molecules into separate water and oxygen molecules. During this reaction, what happens to the catalase?

5.

___________ are the main source of energy for cells.

6.

A pH of 3 is how many times more acidic than a pH of 5?

7.

Which of the following is correctly matched?

8.

Which is the monomer (building block) for nucleic acids?

9.

A(n) __________ is the part of the enzyme the substrate fits into.

10.

Phospholipids have a _ head and a __ tail.

11.

Waterproofs, insulates, and stores energy long-term

12.

The attraction of water molecules to other water molecules.

13.

The pH of blood in humans

14.

Animals store carbohydrates as _ while plants store carbohydrates as .

15.

Two oxygen atoms bond together to create Oxygen gas. Which term best describes this type of matter?

16.

Amino acids are the small molecules in which biomolecule?

17.

The particle involved in chemical reactions is the

18.

Excess carbohydrates are stored as this biomolecule

19.

Charged particles are called...

20.

These organic molecules are used by the body to store the genetic code.