A prokaryote’s cell shape is reinforced by
a. phospholipids.
b. DNA.
c. protein filaments.
d. transport proteins.
e. ribosomes
C
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Salmon move between freshwater and marine environments during their lifecycle. Which of the following statements about their lifecycle is correct?
A. None of the answer options is correct. B. Juvenile salmon and spawning adult salmon must avoid excessive loss of water. C. Feeding adult salmon must avoid excessive gain of water. D. Feeding adult salmon and juvenile salmon must avoid excessive loss of electrolytes. E. Spawning adult salmon must avoid excessive gain of electrolytes.
The excretory system used by adult mollusks consists of tubules called ____
a. nephrons b. hepatic tubules c. metanephridia d. Malpighian tubules e. protonephridia
Energy loss through a detrital food web is
__________ that of a grazing web. a. the same as b. somewhat greater than c. less than d. about twice e. significantly greater than
Arboviruses cause ________ and are transmitted by ________
A) meningitis; bee stings B) meningitis; mosquitoes C) encephalitis; dog bites D) encephalitis; mosquitoes E) both meningitis and encephalitis; mosquitoes