Dna replication occurs in a cell in all of the following situations, except when
a) cells undergo meiosis.
b) cells undergo mitosis.
c) proteins are synthesized.
d) cells repair damage from uv light.

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.

Which of these parts of the membrane large moecules pass through it ?

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