A product of the anterior pituitary gland that causes color changes in its target cells is _____
A) follicle-stimulating hormone (FSH)
B) luteinizing hormone (LH)
C) thyroid-stimulating hormone (TSH)
D) melanocyte-stimulating hormone (MSH)
D
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Which virus found in the blood involves infecting certain T lymphocytes and possibly macro-phages?
a. Cytomegalovirus (CMV) b. Epstein-Barr virus (EBV) c. Rubella virus d. Human immunodeficiency virus (HIV)
In 1964, Nirenberg and Leder used the triplet binding assay to determine specific codon assignments. A complex of which of the following components was trapped in the nitrocellulose filter?
A) ribosomes and DNA B) sense and antisense strands of DNA C) free tRNAs D) charged tRNA, RNA triplet, and ribosome E) uncharged tRNAs and ribosomes
Why is light a source of energy?
a. It excites an electron within a pigment molecule, which then serves as a source of light energy that can be used for work. b. It excites an electron within a pigment molecule, which then serves as a source of heat energy that can be used for work. c. It excites an electron within a pigment molecule, which then serves as a source of potential energy that can be used for work. d. It excites an electron within a pigment molecule, which then serves as a source of kinetic energy that can be used for work.
Fatty acids with double bonds between some of their carbons are said to be
A) unsaturated. B) saturated. C) completely hydrogenated. D) monoglycerides.