The condition of having no sperm in the semen is called _____________. Fill in the blank(s) with the appropriate word(s)
ANS: azoospermia
Biology & Microbiology
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The excretory structures of annelids are referred to as
A. flame cells. B. kidneys. C. protonephridia. D. metanephridia. E. malpighian tubules.
Biology & Microbiology
Nematocysts are used for
a. reproduction. b. excretion. c. muscle action. d. circulation. e. defense
Biology & Microbiology
Passive immunity can provide immunity ____
a. temporarily b. permanently
c. for months d. for many years e. for an entire lifetime
Biology & Microbiology
The organelle that makes steroids in gland cells, regulates calcium in muscle cells, and break down toxins in liver cells is the ___________.
a) lysosomes b) Golgi bodies c) smooth ER d) rough ER
Biology & Microbiology