Which of the following diseases is a synonym for ringworm infection of the nails?
A) tinea barbae
B) tinea cruris
C) tinea nigra
D) tinea unguium
D) tinea unguium
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Some people can detect PTC, a bitter compound found in broccoli and Brussels sprouts, whereas others cannot. Which of the following is the most likely explanation for this observation?
A. The G protein pathway that alters the conformation of the sodium channels is defective. B. Chemoreceptors specific for PTC are not expressed. C. Too few sodium channels are present in the taste receptors. D. Neurotransmitter release from these taste receptors is impaired.
Which of the following enzymes is associated with the formation of peptide binds?
A) peptidase B) aminoacyl transferase C) peptidyl transferase D) peptide hydrolase E) inteins
The human body's arterial blood pH is tightly maintained around 7.4 by buffering agents that bind hydrogen ions to stop any change in pH. If an acid-base imbalance overcomes the buffer system, the body changes the ventilation rate, or the rate at which gas enters or leaves the lungs. Changing the ventilation rate changes the concentration of CO2 in the blood, which alters the pH of the blood. In this case, the muscles that control the ventilation rate are acting as the:
A. homeostatic challenge. B. sensor. C. effector. D. integrator. E. set point.
A chi square test is done to determine _____
A. whether an organism with a dominant phenotype is homozygous or heterozygous B. whether an allele exhibits complete or incomplete dominance C. what the predicted outcome of a dihybrid cross will be D. how closely actual results of a cross match the expected results E. whether a trait is determined by one gene or many genes