Which of the following characteristics of adaptive immunity ensures that vaccination effectively prevents disease?
What will be an ideal response?
immunological memory
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Directional, light-triggered plant development is known as
A. thigmotropism. B. phototropism. C. thigmonasty. D. photomorphogenesis. E. acid-growth movement.
What characteristics do many deep-sea fish have regarding their eyes? a. They have spheroid eyes and one retina
b. They have tubular shaped eyes and one retina. c. They have tubular shaped eyes and two retinas. d. They have spheroid eyes and two retinas.
Changes in the number of copies of chromosomal DNA segments and the genes they contain are called
____________________.Fill in the blank(s) with the appropriate word(s).
Epinephrine, norepinephrine and dopamine are all synthesized from the amino acid tryptophan.
a. true b. false