DNA is
A. a single chain of nucleotides containing deoxyribose.
B. mainly found in the cytoplasm.
C. composed of amino acids.
D. a coiled double chain of nucleotides.
D. a coiled double chain of nucleotides.
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The Calvin cycle requires all of the following molecules EXCEPT
a. NADPH. b. ATP. c. CO2. d. rubisco. e. glucose.
The synthesis of sugar molecules through the process of photosynthesis requires energy absorbed from sunlight. Bearing this in mind, what kind of reaction is photosynthesis?
A. endergonic B. catabolic C. exergonic D. feedback
A recent book by a reputable biologist suggests there is a deep, hot, acidic biosphere under the Earth's crust that may have more biomass than all life at the Earth's surface. What type of organisms would most likely be found in this deep biosphere?
A. primitive heat-loving plants B. primitive animals C. viruses D. fungi living on the detritus from above E. thermoacidophilic archaea
Which of the following is true about lactation?
Select one: a. Only about 50 percent of all women can breastfeed. b. The most significant reason why women do not breastfeed is that they cannot produce enough milk. c. Some women cannot breastfeed because they do not have big enough breasts. d. The major reason why women do not breastfeed is lack of information.