Proteins that affect the structure of DNA bound to histones without altering histone chemical structure are called:

A. chromatin-remodeling complexes.
B. MRE activator proteins.
C. RISCs.
D. splicing complexes.
E. dicers.


Ans: C. RISCs.

Biology & Microbiology

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In one sense, microevolution is _______________ and macroevolution is _______________.

a. punctuated; random b. process; result c. gradual; punctuated d. result; process e. adaptive; innovative

Biology & Microbiology

Removal of which of the following would have the most wide-reaching effect on bodily functions of an adult human?

A. adrenal glands B. pituitary gland C. thyroid gland D. ovaries (in female) or testes (in male)

Biology & Microbiology

One type of weak chemical interaction occurs when two molecules having partial electrical charges of opposite polarity form an intermolecular attraction. These interactions are called:

A. ionic bonds. B. hydrogen bonds. C. hydrophobic interactions. D. van der Waals interactions. E. covalent bonds.

Biology & Microbiology

The biological species concept emphasizes the ability of individuals to ____

a. adapt to the environment b. have greater longevity c. intermingle with other species d. live in a variety of habitats e. interbreed and produce fertile offspring

Biology & Microbiology