Proton gradients are generated by all of the following complexes except

A) complex I.
B) complex II.
C) complex III.
D) complex IV.
E) coenzyme Q.


B) complex II.

Biology & Microbiology

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Salivary glands secrete _________ to start the digestion of ___________.

A. amylase, starch B. trypsin, proteins C. amylase, fats D. pepsin, proteins E. lactase, milk

Biology & Microbiology

What was the purpose of the spark chamber in this experimental apparatus?

a. To generate heat
b. To produce ATP
c. To stop the reaction
d. To generate lightening
e. To produce UV radiation

Biology & Microbiology

Insulin is produced by the:a

beta cells of the islets of Langerhans. b. alpha cells of the islets of Langerhans. c. cortical cells of the adrenal gland. d. neurons in the hypothalamus. e. lobules of the liver.

Biology & Microbiology

__________ respond to mechanical energy such as touch.

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

Biology & Microbiology