The lateral line system in elasmobranchs is used to detect which of the following?

1.Electric currents
2.Odors
3.Sounds
4.Vibrations


4

Biology & Microbiology

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Marijuana is considered a(n)

a. stimulant. b. depressant. c. hallucinogen d. analgesic e. neurotransmitter.

Biology & Microbiology

Which of the following statements about hydrostatic skeletons is true?

a. Compression of fluids causes movement of an animal body. b. Hydrostatic skeletons permit very precise and delicate movements. c. Fluid is moved throughout an organism due to alternating contractions of antagonistic muscles. d. Contraction of the inner circular muscles causes the body of an organism to shorten. e. Contraction of the outer longitudinal muscles causes the body of an organism to lengthen.

Biology & Microbiology

Which plant has seeds that are the richest in protein?

A) wheat B) rice C) barley D) soybean

Biology & Microbiology

A breakfast cereal is advertised as containing essential vitamins and minerals. In this context, the word essential means __________.

a. that the substances contain the "essence" of the vegetables from which they are extracted b. that they are the nutrients that should comprise the largest component of our diet c. that they are necessary for life d. that the nutrients must be supplied in the diet and cannot be made in the body e. nothing: this is just a gimmick

Biology & Microbiology