25 Metabolism - Chapter 6

Open Ended

The common cold is a viral infection that affects the upper respiratory tract. Symptoms include a cough, runny nose, and fever. a) Identify what happens to the body when it has a fever. b) Explain why having a fever is beneficial in fighting off the virus? c) Explain why having a long term fever (3+ days) can be dangerous to the human body.

Open Ended

The human body needs vitamins to function properly. For example, a deficiency in vitamin B 12 leads to muscle weakness and fatigue because the body is unable to produce red blood cells. a) Explain how vitamins function in the body and why they are necessary.

Multiple Choice

What is the function of an enzyme?

• To speed up a chemical reaction

• To provide additional energy

• To inhibit a cellular process

• To increase absorption of a molecule

Multiple Choice

What happens to the reaction rate if an enzyme is denatured or nonfunctional?

• no change to the reaction rate

• increase in reaction rate

• decrease in reaction rate

• decrease then increase reaction rate

Multiple Choice

Which of the following is a way to overcome competitive inhibition of an enzyme?

• increase product concentration

• increase substrate concentration

• decrease enzyme concentration

• decrease environmental temperature

Multiple Choice

How does a noncompetitive inhibitor decrease reaction rates?

• binds to the active site

• binds to the allosteric site

• increases the free energy

• increases the substrate concentration