An amino acid is to a protein as a ________ is to a nucleic acid
A) purine
B) nucleotide
C) protein
D) proton
E) neutron
B
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Autoregulation refers to
A) maintaining constant GFR. B) actions of the parasympathetic nervous system. C) secretion of atrial natriuretic peptide at a constant rate. D) secretion of renin at a constant rate.
Which sequence correctly lists the changes that allow the thick and thin filaments to slide past one another in skeletal muscle contraction?
A. Attach - pivot - detach - return B. Pivot - attach - detach - return C. Pivot - attach - return - detach D. Return - pivot - attach - detach E. Attach - detach - pivot - return
In mitosis, which structure anchors the spindle fibers to the chromosome?
A. Aster B. Mitotic spindle C. Centromere D. Kinetochore E. Chromatid
In this view of the olfactory epithelium, what structure does number 4 indicate?
A. Olfactory gland B. Olfactory bulb C. Olfactory hair D. Supporting cell E. Basal cell