Four of the five structures listed below are parts of
the same organ system. Select the exception.
a. trachea
b. swim bladder
c. alveoli
d. bronchiole
e. glottis
Answer: b
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Coelomates are
A. two embryos that develop in the same coelom. B. animals that have a true coelom. C. animals that have two coeloms. D. animals that have no coelom. E. animals in which the coelom disappears at gastrulation.
If the diploid number of chromosomes for this cell is six, what stage is represented by this
figure?
a. mitosis b. meiosis I c. meiosis II d. either mitosis or meiosis II
The immunological reaction that occurs when there is an optimal ratio of antigen and antibody, producing a lattice at the zone of equivalence is known ________.
A. immunodiffusion B. immunoprecipitation C. immunoblotting D. immunoelectrophoresis
Why would researchers want to have both genomic libraries and cDNA libraries from a particular
organism?
a. The genomic library is generally too big to be helpful; a cDNA library, being smaller, is much easier to study. b. A cDNA library will be the same in every cell; the genomic library tells researchers which genes are being expressed in individual cell types. c. The cDNA library helps us understand how retroviruses work; the genomic library does not. d. The cDNA library is a lot easier to clone than a genomic library. e. A genomic library will be the same in every cell; the cDNA library tells researchers which genes are being expressed in individual cell types.