Memory cells that form during a primary immune response circulate in the blood for
a. several days.
b. weeks.
c. months.
d. many years.
e. a few minutes.
D
Biology & Microbiology
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What evidence do we have that the orbits of the asteroids are modified by the gravitational influences of the planets?
What will be an ideal response?
Biology & Microbiology
The amount of time the cell takes for interphase is approximately 1 hour, plus or minus about 5 minutes.
Answer the following statement true (T) or false (F)
Biology & Microbiology
The steady charge difference across the plasma membrane is called the
a. action potential. b. energy potential. c. electrolyte potential. d. resting membrane potential. e. kinetic potential.
Biology & Microbiology
What reward do many organisms receive for pollinating flowers?
A) protection from predators B) no reward C) nectar D) fruit
Biology & Microbiology