Q: What is essential for cellular respiration for all aerobic organisms? Choices: - nitrogen - water - carbon - oxygen A:
oxygen

(Question)
Q: A substance too big to be pumped across the cell membrane may enter or leave the cell by what method? Choices: - absorption - vesicle infusion - passive transpiration - vesicle transport A:
(Answer)
vesicle transport

Ques: Q: Which branch of biology studies animal behavior? Choices: - microbiology - anthropology - embryology - ethology A:
Ans: ethology

(Q).
Q: Transport of nutrients and regulation of body temperature through fluid flow are characteristics of which bodily system? Choices: - peripheral - gastrointestinal - reproductive - cardiovascular A:
(A).
cardiovascular

Ques:Q: In grazing, a predator partially eats but does not kill what? Choices: - time - pack - predators - prey A:

Ans:prey

Ques: Q: What term describes a drug that has an effect on the central nervous system? Choices: - nonaddictive drug - elemental drug - steroidal drug - psychoactive drug A:
Ans:
psychoactive drug