Answer the following question given this paragraph: An online guide from the University of Illinois about air masses and fronts is found here: http://ww2010. atmos. uiuc. edu/%28Gh%29/guides/mtr/af/home. rxml . Q: What is essential for cellular respiration for all aerobic organisms? Choices: - nitrogen - water - carbon - oxygen A:
oxygen
(Question)
Answer the following question given this paragraph: Some substances are too big to be pumped across the cell membrane. They may enter or leave the cell by vesicle transport . This takes energy, so it's another form of active transport. You can see how vesicle transport occurs in Figure below . 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: Answer the following question given this paragraph: The branch of biology that studies animal behavior is called ethology. Ethologists usually study how animals behave in their natural environment. They try to determine the cause of behaviors, how behaviors develop, and how and why behaviors evolve. Q: Which branch of biology studies animal behavior? Choices: - microbiology - anthropology - embryology - ethology A:
Ans: ethology
(Q).
Answer the following question given this paragraph: Two horrific contraptions on frictionless wheels are compressing a spring by compared to its uncompressed (equilibrium) length. Each of the vehicles is stationary and they are connected by a string. The string is cut! Find the speeds of the vehicles once they lose contact with the spring. 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:Answer the following question given this paragraph: In grazing , the predator eats part of the prey but does not usually kill it. You may have seen cows grazing on grass. The grass they eat grows back, so there is no real effect on the population. In the ocean, kelp (a type of seaweed) can regrow after being eaten by fish. Q: In grazing, a predator partially eats but does not kill what? Choices: - time - pack - predators - prey A:

Ans:prey
Ques: Answer the following question given this paragraph: Caffeine is an example of a psychoactive drug. It is found in coffee and many other products (see Table below ). Caffeine is a central nervous system stimulant . Like other stimulant drugs, it makes you feel more awake and alert. Other psychoactive drugs include alcohol, nicotine, and marijuana. Each has a different effect on the central nervous system. Alcohol, for example, is a depressant . It has the opposite effects of a stimulant like caffeine. 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