An organism can live without enzymes.

True or False

A muscle is contracted when which of the following occurs?

Which of the following is NOT an auto-immune disease? A.) Lupus B.) Rheumatoid arthritis C.) Type-1 Diabetes D.) Down's syndrome

What other factors may influence population numbers

The study of the eating habits of grizzly bears is in which field of biology

Which sequence lists the structures from largest, most inclusive, to smallest?

Ape species began to dwindle during the Miocene, leaving only a few remaining: a situation that exists up to the present. It is thought that the number of ape species reduced at that time because

Jon is in a car accident and severs an artery in his leg. He loses a significant amount of blood and experiences a drop in blood pressure. Explain how his body senses these changes, and how it will respond in an attempt to maintain homeostasis.

a scientist is conducting an investigation that involves water, silver corbon dioxide, and oxygen gas. Which group of statement best describes all of the materials he is using in the investigation?

The question below refers to the selection "taste-the final frontier." hydroponic plants are grown - a. on mars. b. without air. c. in water. d. in soil.

The movement of hot and cold air between land and sea creates what? a. Sea breeze b. Solar energy c. Trade winds d. Coriolis effect