Unit 5 Exam Review

Front

What are the products of cellular respiration?

Back

Water and carbon dioxide.

Front

What is the optimal temperature and pH for enzymes?

Back

Every enzyme has an optimal temperature and pH at which it functions best.

Front

Why are enzymes necessary for cellular reactions?

Back

Enzymes speed up reactions that would otherwise be too slow to meet the needs of the cell.

Front

What happens to pepsin as it enters the small intestine?

Back

It becomes inactive due to the change in pH.

Front

What is the role of hydrochloric acid (HCl) in the stomach?

Back

HCl converts pepsinogen into pepsin, an enzyme that digests proteins.

Front

What are the products of photosynthesis?

Back

Glucose and oxygen.

Front

Define enzyme.

Back

A protein that acts as a catalyst to speed up chemical reactions in the body.

Front

What is the effect of temperature on enzyme activity?

Back

Enzyme activity increases with temperature up to a certain point, after which it decreases.

Front

What is the pH range of the small intestine?

Back

The pH of the small intestine ranges from 7 to 9.

Front

What is the function of pepsin?

Back

Pepsin digests proteins in the stomach.