The complete genetic composition of an organism is called its.
A. proteome.
B. genome.
C. transcriptosome.
D. phenotype.
E. None of these choices are correct.
B. genome.
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A genus of primarily wind-pollinated plants includes one unusual species that has evolved to be pollinated by insects. Several morphological changes have accompanied this adaptation. The ______________ are more colorful, there is a nectary at the base of the ______________, the ________________ are shorter and produce sticky pollen, and the __________________ are stickier for enhanced pollen capture.
A. petals, stamens, sepals, carpels B. petals, sepals, stamens, carpels C. stamens, carpels, petals, sepals D. petals, sepals, carpels, stamens
A ________ epidemic is characterized by a relatively slow and prolonged rise then a gradual decline in the number of individuals infected.
A. propagated B. common-source C. sporadic D. herd
An unidentified cell was found to contain introns and exons. It also expresses DNA polymerase and RNA polymerase. Although it exhibits a promoter region, it has no operons. You conclude that this cell
A. is either a prokaryotic or eukaryotic cell. B. is actually a virus. C. is eukaryotic. D. is prokaryotic.
Which of the following best describes how a neuron fires?
A. Na+ ions cross the plasma membrane, initiating a wave that travels down the axon. B. Vesicles carry neurotransmitters from the nucleus to the other end of the neuron. C. Na+ ions enter one end of the neuron and diffuse to the other end, down the axon. D. Neurotransmitters enter one end of the neuron and diffuse to the other end, down the axon. E. Neurotransmitters cross the plasma membrane, creating a wave that travels down the axon.