In your analysis of a newly discovered bacterial species, you find the bacteria reduce carbon dioxide to organic compounds but do not produce oxygen. The nutritional mode of this new bacterial species is most likely
A. anoxygenic chemoautotroph.
B. anoxygenic photoautotroph.
C. oxygenic chemoautotoph.
D. anoxygenic chemoheterotoph.
E. oxygenic photoautotroph.
Answer: B
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What mechanism makes it difficult to classify bacteria into distinct species groups?
A. vertical evolution. B. horizontal gene transfer. C. sexual reproduction. D. asexual reproduction. E. low mutation rates.
Most of the enzymes that catalyze biochemical reactions involving amino acids recognize the L stereoisomer
Indicate whether the statement is true or false.
Fats that the body cannot synthesize and must be included in the diet are specifically called ________
a. polyunsaturated fats b. essential fatty acids c. saturated fats d. trans-fatty acids
Describe the colonial theory of animal origins
What will be an ideal response?