Which monomer units combine to form proteins?
A) amino acids
B) fatty acids
C) nucleotides
D) sugars
A
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Cholesterol can be used as an energy source for the body; where else can it be used?
a. within cell membranes to provide flexibility b. within ribosomes to assist in protein production c. within the nucleus to provide protection for the DNA d. within the nucleus to provide protection for the RNA
Which invertebrate is thought to reign as a formidable predator?
a. Squids b. Lobsters c. Whelks d. Seastars
Greenhouse gasses act to
a. warm the Earth's surface to support life. b. cool the atmosphere. c. block out ultraviolet radiation. d. contribute to acid rain. e. increase carbon monoxide concentrations.
A polycistronic mRNA contains multiple _______________
A) promoters B) Shine-Dalgarno sequences C) Kozak sequences D) mRNAs E) polypeptide-producing sequences