Arthropods like grasshoppers molt because

a. their exoskeleton is damaged.

b. their exoskeleton cracks and lets in water.

c. their hard exoskeleton cannot grow larger.

d. their body grows faster than their exoskeleton.

What two structures generate the cells responsible for immune responses? •B lymphocytes and T lymphocytes •thymus and lymphocytes •bone marrow and lymphocytes •bone marrow and thymus

A scientist wants to examine a genetic disease in humans. The scientist hypothesizes that the disease can be treated by using gene therapy. Humans take a long time to reproduce and develop, so the scientist will have to

What did virchow add to the cell theory

Strong storms that develop over water, poleward of the polar front, are called:

Which describes a function of the pons? controls several autonomic body functions secretes many of the body's hormones controls blood flow and consciousness relays information to the cerebrum?

The statement that every object attracts every other object is: the Law of Universal Gravitation untrue the Law of Affinity

What is not part of cell theory

Muscular ridges on the inner surface of the ventricles are called

Why can't you use visible light to "see" molecules?

A system to maintain homeostasis must have at least four parts that function together. name these abd bruefly explain what each one does