The great diversity of life on Earth is the result of ________.
a. biology
b. organelles
c. evolution
d. phylogenetic trees
Ans: c. evolution
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Why do lymph nodes swell during an infection?
a. Macrophages accumulate in them. b. Bacteria accumulate in them. c. T cells accumulate in them. d. Production of lymphatic fluid increases. e. Production of mucous increases.
The genotype AA is referred to as
a. heterozygous. b. hybrid. c. homozygous recessive. d. homozygous dominant. e. codominant.
Which of the following plant hormones breaks dormancy in seeds and buds when applied to the plant?
A. ethylene B. cytokinin C. gibberellins D. auxin E. abscisic acid
Janice has just had hip replacement surgery and her physician has prescribed antibiotics and directed her to take them every time she has a dental appointment. This is an example of antibiotic
A. abuse. B. synergy. C. allergy. D. prophylaxis.