Why do animals dont have any pets? (Ex. a bear has a pet dog.)

The axons of a motor neuron release a neurotransmitter which generates an impulse to contract a muscle. What is this neurotransmitter called?

Dimples and long eyelashes are both autosomal dominant traits. If a woman with no dimples, who is heterozygous for long eyelashes, mates with a man who is heterozygous for dimples, and has short eyelashes, a) What is the woman's genotype?

What do scientist use to represent evolutionary time

The lactic acid system is the most important energy system for a high-jump track and field athlete. True or False True False

A forensic scientist finds a single skin cell from saliva on a cigarette butt left in a room where a murder has just occurred.

What would happen to the mass of a cell in a hypertonic, isotonic and hypotonic?

How do air and water movement, and land masses affect the climate

Under what circumstances does membrane transport always require energy?

What is one disadvantage of using plasma gasification to detoxify hazardous waste?

Euglena use which structure for movement? A. cilia B. flagella C. pseudopods D. they do not move