Which one of the following types of neurotransmitter functions as an inhibitory agent, typically suppressing the sensation of pain?
A) endorphins
B) acetylcholine
C) epinephrine
D) serotonin
E) somatostatin
A
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Ribosomes begin translation of an mRNA transcript at the first
A) anticodon. B) AUG. C) promoter. D) tRNA.
When a person has laryngitis, he or she cannot speak. What must happen to permit normal speech?
A) Inflammation in the bronchioles has to go down before enough air can enter the lungs. B) The swelling of the vocal cords must decrease so they can vibrate normally. C) Inflammation in the trachea has to go down before enough air can enter the lungs. D) The epiglottis must cover the glottis.
You find a multi-legged animal in your garden and want to determine if it is a centipede or a millipede. You take the animal to a university where a myriapodologist quickly tells you that you have found a centipede
Which of the following may have allowed her to make this distinction? A) segmentation B) poisonous fangs C) egg-laying D) molting
How does peer review influence the development of scientific theories?
A. Peer review increases competition among scientists and thus increases the quality of the published work. B. Peer review makes it extremely difficult for work to be published other than earth-shattering scientific theories. C. Peer review allows other scientists to know what is current in their field. D. Careful evaluation of research results by other scientists ensures that only solid and legitimate research results are published, and helps prevent faulty research or false claims from being viewed as scientific fact.