From the data shown what can you conclude about the amount of time these plant cells spend in various stages of the cell cycle?
A) Cells spend more time in cytokinesis than in synthesizing new DNA during chromosomal duplication.
B) Metaphase is the longest stage of mitosis.
C) Metaphase lasts about twice as long as anaphase
D) Cells spend less time in prophase than any other of the stages of mitosis.
Answer: C
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While touring a farm, the farmer tells you that she uses cytokinin to increase crop productivity. But, from biology class you know that cytokinin alone has no effect on parenchyma cells. What other substance is the farmer most likely using in conjunction with cytokinin?
A. auxin B. abscisic acid C. strigolactones D. ethylene E. suberin
Evolution through natural selection will occur most rapidly for populations of plants that
A. are already well adapted to the environment. B. live in an unchanging environment. C. are in the same genus. D. reproduce sexually and live in an unstable environment
Which infectious disease is transmitted vertically?
A. Human rhinoviruses, a cold, from someone sneezing in your face B. Gonorrhea, a disease transmitted between sexual partners C. Zika, spread by mosquitoes D. Mesothelioma, lung cancer caused by asbestos E. HIV, spread from mother to child during gestation or breast feeding
During what time of the day would the most hydrogen bonds reform between water molecules in a lake?
A) in the late morning B) at noon C) in the late afternoon D) at night