Unsaturated fats ____
a. are solid at room temperature
b. have at least one double bond in their fatty acid tail
c. are saturated with hydrogen atoms
d. mainly come from animals
e. consist of straight chain fatty acids
ANSWER: b
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DNA associates very tightly with nucleosomes because
A. DNA can form covalent bonds with histone proteins. B. negative charges on DNA are attracted to positive charges of the histone proteins. C. the histone tails wrap tightly around the DNA double helix. D. the amino acids of histone proteins are largely acidic, while DNA molecules are basic. E. histone H1 tightens the coils of DNA that are wrapped around the nucleosome.
The basic unit of the nervous system is the
a. neuron. b. neuroglial cell. c. brain. d. nerve. e. neurotransmitter.
These are the primary cellular sites for the assembly of proteins
a. Golgi bodies b. ribosomes c. mitochondria d. lysosomes e. smooth endoplasmic reticula
What does the height of the bar labeled "Control group" (on the left side of the graph) show?
What will be an ideal response?