The prokaryote operon model explains gene
regulation at the level of
a. replication.
b. transcription.
c. transcript processing.
d. transcript transport.
e. translation.
B
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Which one of the following statements about gills operating in water is FALSE?
A. Water can support delicate gill structures. B. Most fish actively pump water over their gills. C. Keeping membranes moist is not a problem. D. Water carries more oxygen than air and this requires gills be more efficient than lungs. E. Gills have evolved many times and take different forms in aquatic animals.
When going from a seated to standing position, the knee undergoes ____
a. flexion b. extension c. abduction d. adduction e. pronation
'Bluecomb' septicemia in turkeys and other species of fowl (chickens, ducks, ems, parrots, peacocks, pheasant) is caused by:
A. erysipelothrix rhusiopathiae B. listeria monocytogenes C. neither erys rhus nor listeria monocyt D. both erys and list
What is the cause of hemolytic disease of the newborn?
A. The mother has eosinophilia during pregnancy. B. An O blood type mother produces anti-A antibodies which cross the placenta and react with the baby's A antigens. C. Antibodies of an A or B blood type mother cross the placenta and react with baby's O antigens. D. The mother produces anti-Rh antibodies which cross the placenta and react with baby's Rh antigens. E. The mother's mast cells degranulate in the placenta, damaging it.