If during a chemical reaction, a molecule loses hydrogens, it could be described as being oxidized
a. True
b. False
ANSWER: True
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The observations and research on aphid color changes can most directly be summarized in that
A. Koga and Fugatsu proved that the color change from red to green in aphids was ecologically favorable to survival. B. the method of paper fiber separation of pigment molecules showed that Ricketsiella bacteria were the source of the green coloration of aphids. C. species of organisms can be chemically diverse and affect each other, even among similar groups of aphids and bacteria. D. it turned out that the green appearance of aphids was because of the large amount of green Ricketsiella bacteria coating their bodies. E. All of the answer choices are correct.
Which of the following is NOT a desirable characteristic of a model organism used to study development?
A. large oocytes B. short generation time C. large genome D. produces many offspring E. small size
A characteristic of annelids is:
A) parasitism. B) body segmentation. C) ocean-dwelling existence. D) freshwater existence. E) a radula.
Sexual recombination includes the shuffling of chromosomes in __________ and fertilization.
a. mitosis b. genetic drift c. natural selection d. mutation e. meiosis