Male orgasm is necessary for

a. ejaculation of semen.
b. pregnancy.
c. erection.
d. sexual arousal.
e. all of these.


A

Biology & Microbiology

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Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm

Using this information, which transport mechanism is most probably functioning in the intestinal cells? A) simple diffusion B) phagocytosis C) active transport pumps D) exocytosis E) facilitated diffusion

Biology & Microbiology

The sea squirts and lancelets have an inner chamber that expels water. This chamber is called the

(a) intestine. (b) bladder. (c) atrium. (d) nephridium.

Biology & Microbiology

The inheritance patterns of genetic material that is not contained in the nucleus of the cell is called _______

A. extranuclear inheritance B. maternal effect C. imprinting D. nuclear E. epigenetic

Biology & Microbiology

Isotopes are atoms of the same element that have different numbers of protons

Indicate whether the statement is true or false

Biology & Microbiology