If the p53 gene is damaged, what can occur?

tumor growth

lack of oxygen to the brain

no antibodies formed

buildup of lactose

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping

Match the following terms and definitions. the transformation of a larva to an adult; occurs only in animals having great differences in form between the larva and adult pupa 2. type of mammal that lays eggs monotreme nymph the part of certain insect life cycles in which the young animal has no wings or reproductive organs the developmental stage between larva and adult in insects undergoing metamorphosis metamorphosis 5. the male gonad which produces sperm testes