The hydrophobic tails of a phospholipid are composed of
A. fatty acids.
B. phosphate.
C. alcohol.
D. glycerol.
E. All of these choices are correct.
Answer: A
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Another name for a chromosome is a ________, because it contains alleles that are often inherited together.
A) linkage group B) crossing over group C) genetic recombinant D) bivalent
Bird respiration is extremely efficient because birds possess
a. a very long trachea. b. lungs. c. nares. d. air sacs. e. air bladders.
Which organism produces a toxin that causes scalded skin syndrome?
a) Streptococcus pyogenes b) Pseudomonas aeruginosa c) Staphylococcus aureus d) Mycobacterium ulcerans
Synaptic integration means that ____.
A. positive or excitatory stimuli produce an excitatory postsynaptic potential B. the positive and negative ions neutralize each other C. excitatory and inhibitory signals are summed in a receiving neuron D. the adjacent neurons interact so that excitatory and inhibitory stimuli cancel each other out E. excitatory signals take precedence over inhibitory signals