Saprobic fungi obtain nutrients from _____
a. nonliving organic matter c. living animals
b. living plants d. living plants and living animals
A
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Which of the following are accessory photosynthetic pigments that expand the spectrum of light that
provides energy for photosynthesis:a. carotenoids. b. chlorophyll a. c. chlorophyll b. d. Both caroternois and chlorophyll a. e. Both carotenoids and chlorophyll b.
Xeroderma pigmentosum is a human genetic disease caused by
A) elevated levels of cholesterol in the blood. B) failure to produce pigment that protects the skin cells from UV light exposure. C) defective DNA excision-repair mechanisms. D) mutations that inactivate tumor suppressor genes. E) loss of genes controlling the SOS response.
When microbes are introduced into the environment to restore stability, the process is called
A. immunology. B. genetic engineering. C. epidemiology. D. bioremediation. E. taxonomy.
Which of the following can be used to cultivate plant viruses?
A. Plant protoplast cultures B. Whole plants C. Cultures of separated plant cells D. All of the choices are correct.