What is the basic structure of most lipids?
A) A glycerol head and up to three fatty acid tails
B) A linear chain of individual monomers
C) A branched chain of individual monomers
D) A chain of fatty acid tails
A
Biology & Microbiology
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A neuropeptide that functions as a natural analgesic is _____
A) acetylcholine B) epinephrine C) endorphin D) nitric oxide E) gamma-aminobutyric acid (GABA)
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The pre-natal period begins with the ____
a. zygote b. blastocyst c. embryo d. fetus e. infant
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Which type of organisms were likely the first land animals?
a. birds b. reptiles c. mammals d. amphibians e. arthropods
Biology & Microbiology
Do all ecological pyramids have a broad base with a smaller top?
A. Yes B. No
Biology & Microbiology