The phase of a muscle twitch during which the muscle fiber fires an action potential is the
A. latent phase.
B. subthreshold phase.
C. pre-stimulation phase.
D. contraction phase.
Answer: A
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What will happen if the ribosome reads a faulty mRNA which calls for a tRNA that brings an amino acid that is wrong?
A. The protein that is produced will be incorrect, causing possible problems. B. The protein that is produced will be enhanced. C. The protein that is produced will be correct. D. A protein will not be produced.
Which of the following are involved in the pulmonary circuit?
A) superior vena cava, right atrium, left ventricle B) right ventricle, pulmonary veins, aorta C) right ventricle, pulmonary trunk, left atrium D) inferior vena cava, right atrium, aorta E) left ventricle, pulmonary veins, right atrium
If you were to rub your finger over the surface of your face, you would notice that the skin is oily. What makes up the oil?
A. Waste material from cellular metabolism B. Waste material (bilirubin) from dead red blood cells C. Ruptured cells from sebaceous glands D. Extracellular fluid not drained by the lymphatic system E. Plasma leakage from damaged blood vessels
The bones of the shoulder and pelvic girdles are part of the axial skeleton.
Answer the following statement true (T) or false (F)