What three compounds form the basic structure of DNA?

What stage of the cell cycle do cells spend the greatest amount of time in

A type if stem that grows underground

How do cells use digested food?

Wendy and Michelle are trying to determine whether their ideas are scientific or pseudoscientific. Wendy's idea is based on experiments, and new observations can improve it. The experimental results of Michelle's idea cannot be verified.

How long is the absolute refractory period of a cockroach's leg?

Ducks and beavers both have webbed feet

What is the term for brief episodes of neurologic deficit caused by temporary interference with blood supply to the brain?

Which of these celestial bodies has a tail? a-asteroid b-comet c-moon d-planet

What is the function of myeloma cells used in the production of monoclonal antibodies?

Describe a simple nervous system. Give an example of an organism that has a simple nervous system.