Contact transmission may occur indirectly when a nonliving intermediate called a _______ is involved
Fill in the blank(s) with the appropriate word(s).
fomite
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Consider the cell cycle of a human cell. During G2, what is the state of the homologous chromosomes?
A. The homologous chromosomes are lined up on the equator of the cell. B. The homologous chromosomes have all been copied through DNA replication and are beginning to condense. C. The homologous chromosomes have been pulled to their respective poles by the spindle apparatus. D. The homologous chromosomes have not been replicated yet. E. The homologous chromosomes are now in the haploid or n condition.
A researcher is looking for met- strains. He/she compares two plates. One plate has colonies growing
on complete medium. The other plate has colonies growing on methionine deficient medium. How can the researcher determine which colonies are met-?
a. The colonies growing on the methionine plate are met-. b. met- colonies grow on the complete medium but do not grow on the plate lacking methionine. c. We cannot determine which colonies are met- because we do not have enough information. d. Only the colonies growing on the complete medium are met-. e. met- colonies grow on the plate lacking methionine but do not grow on the complete medium.
A cohort is
a. a group of individuals of the same species born during the same time interval. b. any member of the same species. c. a group of individuals with the same parents. d. a group of individuals of the same sex. e. any group of closely related individuals.
The __________ insulates and protect the axon for some neurons:
a. axon terminal b. myelin sheath c. cell body d. nucleus