Anaphase
a. involves the lining up of the chromosomes
across the equatorial plate.
b. is the same in mitosis and meiosis I and II.
c. is initiated when the chromosomes begin to
move apart.
d. results in an unequal distribution of
chromosomes to the resulting cells.
e. does all of these.
C
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__________ is a term that refers to similarities among various species that occur because the species are derived from a common ancestor.
A. Homologue. B. Phylogeny. C. Homology. D. Heterology. E. Morphology.
Proteins that are destined to become associated with the inner surface of the plasma membrane are:a
made on free ribosomes in the cytoplasm. b. manufactured in the same way as protein hormones. c. made on ribosomes located on the rough endoplasmic reticulum. d. transported to the plasma membrane within a secretory vesicle. e. manufactured in the same way as proteins destined to become external peripheral proteins.
Consider the cell cycle of a human cell. During G2, what is the state of the homologous chromosomes?
A. The homologous chromosomes have not been replicated yet. B. The homologous chromosomes are now in the haploid or n condition. C. The homologous chromosomes have been pulled to their respective poles by the spindle apparatus. D. The homologous chromosomes have all been copied through DNA replication and are beginning to condense. E. The homologous chromosomes are lined up on the equator of the cell.
Which f the following mutagens is matched correctly with its action?
A) 2-Amino purine is an adduct-forming agent B) ethidium bromide is an intercalating agent C) 5-Bromouracil is an alkylating agent D) acetaldehyde is a free radicle E) mustard gasses are base analogs