Which part of a neuron allows it to receive and send electrochemical signals?

a. cytoplasmic extension
b. nucleus
c. neuroglial extension
d. plasma membrane
e. interneuron


ANSWER: a

Biology & Microbiology

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To test the hydrogen-bond hypothesis for reduced affinity of the heme group for carbon monoxide

when the heme is associated with polypeptide chains, the researchers used which of the following model systems?

a. Mutated rat myoglobin. b. Mutated rat hemoglobin. c. Myglobin gene isolated from a bacteria and introduced into sperm whale. d. Myglobin gene isolated from a sperm whale and introduced into a bacteria. e. Hemoglobin gene isolated from a sperm whale and introduced into a bacteria.

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After fertilization occurs in a flowering plant, the ovary becomes a(n) ____

a. gametophyte b. ovule c. seed d. fruit e. endosperm

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In a dihybrid cross, in which both parents are heterozygous for both traits, what is the probability that the offspring will exhibit both of the dominant phenotypes?

A. 1/16. B. 1. C. 6/16. D. 3/16. E. 9/16.

Biology & Microbiology

During the fasting phase, the primary fuel of the brain is __________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology