A nucleotide may consist of

a. deoxyribose or ribose.
b. purines or pyrimidines.
c. phosphate groups.
d. all of the above.


a

Biology & Microbiology

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A solution with a pH of 7.4 ____

a. is considered an acid b. has more H+ than OHc. has equal numbers of H+ and OHd. has a pH similar to ammonia e. is similar in acidity to normal body fluids

Biology & Microbiology

The promotion of the lac operon in bacteria is ________________________.

A. activated by a repressor protein B. dependent on lactose concentration C. dependent on glucose concentration D. regulated by RNA polymerase E. regulated by mRNA

Biology & Microbiology

The resting potential for a neuron is about _______ mV.

a. 0 b. -55 c. -70 d. -100

Biology & Microbiology

An example of a prezygotic isolating mechanism is behavioral isolation

Indicate whether the statement is true or false.

Biology & Microbiology