These structures are seen in a midsagittal section of the human
A) stomach, kidney B) nose, umbilicus (navel)
C) ribs, thigh D) trachea, lung
Answer: B
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On axial CT images, which muscle of the neck is seen most posteriorly?
A. Sternocleidomastoid B. Erector spinae C. Posterior scalene D. Longus capitis/longus colli
Which of the following statements about zygotes is TRUE?
A. They have double the number of chromosomes as gametes. B. They have half the number of chromosomes as gametes. C. They have the same number of chromosomes as gametes. D. The number of chromosomes in a zygote is independent of the number of chromosomes in the gametes.
Under an electron microscope, the plasma membrane appears as a trilaminar structure consisting of two dark layers separated by a light middle layer
Indicate whether the statement is true or false
In its second-messenger role, cAMP activates enzymes called ________, whose job is to regulate other enzymes by adding phosphate groups to them
A) peripheral proteins B) transmembrane proteins C) blockers D) glycocalyx E) kinases