Why are human sex hormones considered to be lipids?
A) They are essential components of cell membranes.
B) They are steroids, which are not soluble in water.
C) They are made of fatty acids.
D) They are hydrophilic compounds.
E) They contribute to atherosclerosis.
Ans: B) They are steroids, which are not soluble in water.
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In some plants, the direction of growth changes in response to contact with an object. This is called
__________. Fill in the blank(s) with the appropriate word(s).
Most of those affected with an autosomal dominant genetic disorder are homozygous for that trait
a. True b. False
Both Trichomonas and Giardia are parasitic protists in the group called
A) slime molds. B) alveolates. C) diatoms. D) excavates. E) euglenids.
Which of the following regarding antimicrobial control agents is FALSE?
A) Contaminating organic debris such as blood or sputum will decrease effectiveness. B) Some agents kill by denaturing microbial cell proteins. C) Some agents affect microbial cell membranes by dissolving lipids. D) Some agents are utilized as both an antiseptic and a disinfectant. E) A true antimicrobial control agent is equally effective against both bacteria and viruses.