In a nucleotide, the nitrogenous base is bonded to 

A. an acid.
B. a sugar.
C. a phosphate.
D. itself.


B. a sugar.

Biology & Microbiology

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The hydrogen ion gradient across the thylakoid membrane is required to ________________

What will be an ideal response?

Biology & Microbiology

In times of stress, the sympathetic nervous system decreases blood pressure

Indicate whether the statement is true or false.

Biology & Microbiology

Each of these organ systems is involved in the homeostatic regulation of body temperature EXCEPT which one?

A) nervous system B) integumentary system C) circulatory system D) muscular system E) skeletal system

Biology & Microbiology

Flower parts are borne on the tip of a stalk referred to as the:a

calyx. b. corolla. c. filament. d. receptacle. e. stigma.

Biology & Microbiology