Chemical selection occurs....

A. when a catalyst speeds up a process that would normally occur at a slower rate.
B. when covalent bonds are formed between two previously unlinked molecules.
C. when a chemical within a mixture has special properties or advantages that cause it to increase in number compared to other chemicals in the mixture.
D. during the ribozymic phase of coacervate formation.
E. after the formation of a membrane and when the DNA is replicated and transcribed.


C. when a chemical within a mixture has special properties or advantages that cause it to increase in number compared to other chemicals in the mixture.

Biology & Microbiology

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Glucose dissolves in water because it ____

a. ionizes b. is a polysaccharide c. is a polar and forms many hydrogen bonds with water molecules d. has a very reactive primary structure e. is an isotope

Biology & Microbiology

Red and white blood cells are produced where?

What will be an ideal response?

Biology & Microbiology

Cholesterol is produced by the ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The expression of the lac operon in an E. coli cell missing the gene that encodes for the lac repressor:

A. will increase when lactose is present. B. will decrease when lactose is present. C. will decrease when glucose is present. D. will increase when glucose is present.

Biology & Microbiology