When in the cell cycle would you find sister chromatids?
A. G1
B. S
C. G2
D. Answers b and c are correct.
D
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Humans can digest starch but not cellulose because ________
a. starch is held together by a different type of linkage than cellulose is b. starch and cellulose are composed of different monomers c. the structure of starch is stabilized by hydrogen bonding d. the monosaccharide in starch carries a nitrogen-containing functional group
Scientists measured the pressure in the xylem of redwood trees at different heights and found that the higher they made their measurements, the lower the pressure. They extrapolated this to a pressure of zero, and concluded that the tallest a tree could grow is 122–130 meters. The tallest known tree on Earth is 112.7 meters. Which of the following most likely limits the height of trees?
A. amount of transpiration in leaves B. ability to take up CO2 C. strength of water cohesion D. amount of energy needed to pump water to the tops of the trees E. amount of photosynthesis in leaves
Redi concluded from his experiment that
A. maggots arise from decaying meat. B. air is a "vital element" necessary for spontaneous generation. C. living things arise from other living things. D. microorganisms are present in the air.
The process of glycolysis in cellular respiration has the function of ________ .
a. producing 36 molecules of ATP b. breaking down acetyl-CoA c. breaking down pyruvate d. breaking down glucose e. producing ten molecules of ATP