A snake that has evolved to look similar to a branch will probably be able to avoid
A. predation.
B. competition.
C. parasitism.
D. mutualism.
E. the sun's rays.
Answer: A
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The figure shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?
A) Green and yellow wavelengths inhibit the absorption of red and blue wavelengths. B) Bright sunlight destroys photosynthetic pigments. C) Oxygen given off during photosynthesis interferes with the absorption of light. D) Other pigments absorb light in addition to chlorophyll a. E) Aerobic bacteria take up oxygen, which changes the measurement of the rate of photosynthesis.
Why do diabetes patients often display tissue degeneration in the extremities?
a. The body is unable to process enough glucose and therefore supports only the major organs. b. The fat deposits protecting the extremities are utilized as an energy source. c. The body utilizes protein as an energy source, weakening blood vessels , especially those in the extremities. d. The unutilized glucose in the extremities crystallizes and damages these tissues. e. The excess exercise used to control the diabetic condition causes tissue degeneration.
The alleles an individual inherits are the
a. phenotype b. allelotype. c. homotype. d. heterotype. e. genotype.
Which of the following ethnic groups does NOT have Neanderthal DNA in their genome?
A. Western Europeans B. Australians C. Tibetans D. Africans