Which of the following hormones is released to correct a hypoglycemic state?
a. Insulin
b. Testosterone
c. Estrogen
d. Glucagon
d. Glucagon
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________ defines the lowest quantity of an antigen that can be detected in a serological test
A) Specificity B) Antigenic capacity C) Minimal inhibitory concentration D) Sensitivity
Bacteria that do not have a fixed shape are said to be ________.
Fill in the blank(s) with the appropriate word(s).
In the formation of recombinant DNA, what enzyme is needed to seal the sticky ends of genes into plasmids or chromosomes?
A. Primase B. DNA ligase C. DNA helicase D. DNA polymerase I E. DNA polymerase II
When experimentally applying alpha-bungarotoxin to a muscle, you find that it does not contract when the motor neuron leading to it is electrically stimulated. Knowing that this toxin blocks acetylcholine receptors, what can you conclude about the failure to contract?
A. A contraction fails to occur because an action potential is not generated in the muscle cell. B. A contraction fails to occur because this toxin prevents cross-bridge formation and thereby directly prevents contraction. C. A contraction fails to occur because this toxin directly prevents calcium ion release from intracellular stores. D. A contraction fails to occur because neurotransmitter release by the motor neuron is blocked at the neuromuscular junction. E. A contraction fails to occur because acetylcholine is not released from the motor neuron.