Plasma cells do which of the following?
A) directly attack the antigen
B) secrete additional antibodies
C) both a and b
D) neither a nor b
B
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Power is the
A. time rate of doing work. B. rate at which energy changes forms. C. both of these D. none of the above
) Detroit's unique geography is characterized by its
A) low population density. B) large urban footprint. C) great transportation networks and corridors. D) expanses of single plot housing. E) low population density, large urban footprint, great transportation network and corridors, and expanses of single plot housing.
Which of the following describes the prevailing wind at Vancouver, British Columbia (latitude 50° N),
A. easterly B. southwesterly C. westerly D. northwesterly
When Mendel bred green-pea plants with yellow-pea plants, all the offspring had yellow peas. This means that the trait for yellow peas is
A) dominant. B) recessive. C) homozygous. D) heterozygous.