According to the endosymbiosis hypothesis
A. the first endosymbiotic event involved an anaerobic bacterium.
B. the mitochondrion evolved from the same endosymbiont as the hydrogenosome.
C. the first endosymbiont was a fermentative organism.
D. All of the choices are correct.
Answer: D
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Which meiotic phase is matched with the mitotic phase it most closely represents?
a. anaphase I and anaphase b. anaphase II and anaphase
c. metaphase I and metaphase d. interkinesis and telophase e. metaphase II and prophase
If the histones are rearranged to control access to a gene, this is called
a. transcription. b. chromatin remodeling. c. DNA condensation. d. remodeling complex formation. e. acetylation.
The energy that drives the light-independent
reactions comes from
a. sunlight. b. glucose. c. carbon dioxide. d. ATP and NADPH. e. water and oxygen
The two most important factors that appear to have been involved in past mass extinctions are:a
fire and climatic factors. b. disease and parasites. c. glaciers and earthquakes. d. environmental and biological factors. e. plate tectonics and climatic factors