Which genes are subject to cytoplasmic inheritance?
a. genes found in mitochondria and chloroplasts
b. genes found in viruses
c. genes found in bacteria
d. genes found in sex chromosomes
Ans: a. genes found in mitochondria and chloroplasts
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How do anoxygenic phototrophs benefit from possessing accessory pigments that allow light to be harvested at deeper areas of a fluid environment?
A. This allows even anaerobic microbes to conduct photosynthesis, as they can harvest light energy in the deeper areas where oxygen won't be present. B. The cells can use wavelengths of light that havenotbeen absorbed (filtered out) by the photosynthetic organisms closer to the surface of the fluid. C. They don't have to compete with other cells that utilize oxygen in the upper levels for the scarce nutrients in the fluid environment. D. This allows even anaerobic microbes to conduct photosynthesis, as they can harvest light energy in the deeper areas where oxygen won't be present AND can use wavelengths of light not absorbed (filtered out) by the photosynthetic organisms closer to the surface of the fluid. E. This allows even anaerobic microbes to conduct photosynthesis, as they can harvest light energy in the deeper areas where oxygen won't be present, use wavelengths of light not absorbed (filtered out) by the photosynthetic organisms closer to the surface of the fluid; AND don't have to compete with other cells that utilize oxygen in the upper levels for the scarce nutrients in the fluid environment.
A ?COOH group is a(n) ____ group
a. carboxyl b. hydroxyl c. amine d. methyl e. carbonyl
Stomata
a. are found in the root cells. b. may be found scattered anywhere throughout the plant. c. allow the movement of gases into and out of plants. d. prevent the loss of water from plants. e. remain open at all times
Which of the following represents the phases of mitosis in their proper sequence?
a. prophase, metaphase, anaphase, telophas b. interphase, prophase, metaphase, telophase c. anaphase, interphase, prophase, metaphase, telophase d. prophase, metaphase, anaphase, telophase, cytokinesis