The pathogenicity of what virus is based on damage to the immune system?
a) HPV
b) HIV
c) HSV type 1
d) HSV type 2
Ans: b) HIV
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“Germination” can refer to two different events:
A. the arrival of the pollen grain at the ovule, and the growth of the seedling from the seed. B. the development of the flower, and the growth of the seedling from the seed. C. the growth of the pollen tube into the embryo sac, and the growth of the seedling from the seed. D. the development of the fruit from the ovary, and the growth of the seedling from the seed.
Compare the first forms of photosynthesis to evolve with the form used by green plants today
What will be an ideal response?
An embryo with one X and one Y chromosome will develop male characters because of
a. the presence of female hormones in development. b. the absence of testosterone during early embryology. c. the SRY regions of the Y chromosome. d. maternal substances passed to the zygote during fertilization. e. human chorionic gonadotropin.
Populations can be divided into three ecologically important age classes: prereproductive, reproductive, and ________
Fill in the blank(s) with correct word