If the vas deferens tubes are cut and tied
(vasectomy), the semen will not contain
a. fructose.
b. buffers.
c. mucus.
d. sperm.
e. any of these
D
Biology & Microbiology
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Retroviruses are medically important viruses because
A) they include the viruses the cause hepatitis. B) some retroviruses cause cancer. C) they include the virus that causes AIDS. D) they include viruses that cause cancer and AIDS.
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Egg yolk and seed endosperm are examples of passive parental care
Indicate whether the statement is true or false.
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Four of these statements about conifers are true. Which one is the exception?
a. They form seeds in female cones. b. They have needlelike and scale-like leaves. c. They have a thick cuticle. d. They have motile sperm. e. They are mostly evergreen.
Biology & Microbiology
A zygote is formed from what two gametes?
Biology & Microbiology