All covalent bonds are polar
Indicate whether the statement is true or false.
FALSE
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If an animal cell has 18 chromosomes and undergoes mitosis, how many chromosomes would each daughter cell have?
A) 9 B) 36 C) 23 D) 18 E) It varies, but the total number in the two daughter cells will always add up to 18.
Autonomic reflexes
A. are an example of positive feedback. B. are harmful. C. are integrated somewhere in the CNS. D. have efferent input and afferent output. E. are impossible.
The epidermis (outer layer of the skin) needs to be tough and resistant to shearing and stretching. The type of intercellular junction best suited for this need is a(n) ________.
A. gap junction B. ion channel C. desmosome D. tight junction
Which cells produce testosterone?
A. Seminiferous cells B. Interstitial cells C. Cumulus cells D. Sustentacular cells E. Spermatogonia