Which of the following is true regarding saturated fatty acids?
A) They are the predominant fatty acid in corn oil.
B) Theyhave double bonds between carbon atoms of the fatty acids.
C) They are the principal molecules in lard and butter.
D) They are usually liquid at room temperature.
E) They are usually produced by plants.
Ans: C) They are the principal molecules in lard and butter.
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As a genetic counselor, you are constructing a human pedigree for a particular disease. You note that every generation shows the trait, suggesting that the trait is
A. sex-linked. B. recessive. C. dominant. D. polygenic. E. pleiotropic.
Air rushes into the lungs of humans during inhalation because
A. the volume of the thoracic cavity increases. B. pressure in the alveoli increases. C. the diaphragm contracts and pushes upward on the chest cavity. D. smooth muscle lining the trachea, bronchi and bronchioles contracts and causes their volume to increase. E. pulmonary muscles contract and pull on the outer surface of the lungs.
Severe combined immunodeficiencies (SCIDs) are due to
A. autoantibodies. B. delayed hypersensitivity. C. a genetic defect in the development of both T cells and B cells. D. congenital absence or immaturity of the thymus gland. E. failure of B-cell development and maturity.
ALL of the following have pathogen-associated molecular patterns (PAMPs) EXCEPT
a. macrophages. b. viruses. c. Salmonella spp. d. Shigella spp.