An experiment involves the inoculation bacteria onto a variety of media with NaCl concentrations ranging from 1% to 25%. Which of these media is most likely to be isotonic with the bacterial cells?
1% NaCl
5% NaCl
10% NaCl
25% NaCl
1%NaCl
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In prophase, ribosomal RNA synthesis stops when the chromosomes condense, and as a result:
A. the chromosomes lengthen. B. the nuclear envelope reforms. C. the nucleolus disappears. D. the chromosomes line up at the equator of the cell.
Repressors
a. bind to operators. b. lie between operators. c. lie between promoters. d. lie after operators. e. are part of an operon.
A single chromosome has Select one:
a. a single gene with a single allele. b. multiple genes, each with multiple alleles. c. a single gene with multiple alleles. d. multiple genes, each with a single allele.
Which of the following is the best feature that allows moray eels to be successful hunters?
a. Their ability to swallow items larger than their heads. b. Their ability to fit into small holes in spite of their large body. c. Their habit to ambush when they hunt. d. Their jaw arrangement.