31. What is the role of cyclins in a cell?
A. to control the movement of microtubules
B. to s...
Biology, 09.01.2021 01:00 okasiafolk27
31. What is the role of cyclins in a cell?
A. to control the movement of microtubules
B. to signal for the cell to divide
C. to stimulate the breakdown of the nuclear
membrane
D. to cause the nucleolus to disappear
Answers: 2
Biology, 22.06.2019 00:00
Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.
Answers: 1
Biology, 22.06.2019 06:30
Aplant may open end close its stomata to prevent excess water loss and maintain
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Biology, 22.06.2019 09:30
Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.
Answers: 1
Biology, 22.06.2019 13:00
Blank is a rock with a find dark texture that makes up the oceanic crust
Answers: 1
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