Biochemistry Regents Review Challenge

This video tutorial covers biochemistry topics for a regents review, focusing on enzymes, proteins, and organic compounds. It explains the digestion of starch into simple sugars, the specificity of enzyme functions, and the effects of temperature and pH on enzyme activity. The tutorial also discusses energy storage in starch molecules and the importance of maintaining a stable internal environment for proper enzyme functioning.

What is one effect of uncontrolled diabetes on blood pH?

• It fluctuates randomly.

• It remains neutral.

• It becomes more acidic.

• It becomes more basic.

What is a synonym for a biological catalyst?

• Mineral

• Enzyme

• Vitamin

• Hormone

What must happen to starch before it can be used by the body?

• It must be inhaled.

• It must be converted into fats.

• It must be digested into simple sugars.

• It must be absorbed through the skin.

What are the building blocks of starch?

• Nucleotides

• Simple sugars

• Fatty acids

• Amino acids

Which of the following is an example of an organic compound?

• Water

• Carbon dioxide

• Oxygen

• Proteins

What are the building blocks of proteins?

• Simple sugars

• Fatty acids

• Amino acids

• Nucleotides

Why would an enzyme that breaks down proteins not work on starch?

• Enzymes can only work in the stomach.

• Starch is not a protein.

• Starch is too small.

• Enzymes are specific to their substrates.

What happens to an enzyme when it denatures?

• It speeds up its reaction rate.

• It changes shape and stops functioning.

• It becomes more active.

• It becomes a different enzyme.

What can cause an enzyme to denature?

• Optimal temperature

• Optimal pH

• Increased temperature or pH

• Decreased substrate concentration

Why is it important to maintain a constant internal environment for enzyme function?

• To increase enzyme production

• To prevent enzyme denaturation

• To change enzyme specificity

• To slow down metabolic reactions