In order for sperm to mature successfully, the temperature of the testes need to be ____ than normal body temperature
Fill in the blank(s) with the appropriate word(s).
Ans: slightly lower
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Species of both Shigella and Streptococcus
A. invade host cells. B. produce a toxin. C. cause ergot poisoning. D. are delivered via flea bites. E. invade host cells AND produce a toxin.
The letter "A" in the accompanying figure represents which teeth?
a. incisors b. molars c. canines d. premolars e. grinders
The ________ is a modified form of endoplasmic reticulum that stores and releases calcium ions when a muscle contracts
Fill in the blank(s) with correct word
Ca2+-pumps in the plasma membrane and endoplasmic reticulum are important for _____________
(a) maintaining osmotic balance. (b) preventing Ca2+ from altering the activity of molecules in the cytosol. (c) providing enzymes in the endoplasmic reticulum with Ca2+ ions that are necessary for their catalytic activity. (d) maintaining a negative membrane potential.