Name the substance that serves as the hereditary material in eukaryotes and prokaryotes
What will be an ideal response?
DNA, or deoxyribonucleic acid
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The fluorochrome method of staining Mycobacterium:
a. is less sensitive than the conventional carbolfuchsin stains. b. enables the smear to be initially examined at lower magnifications. c. results in a lower yield of positive smears. d. increases the amount of time needed for examining smears.
__________ line human nasal passages. Fill in the blank(s) with the appropriate word(s)
A lack of which molecule would result in a cell's inability to "turn off" genes?
A) operon B) inducer C) promoter D) corepressor
Which phenomenon is a likely consequence of thinning of the ozone layer?
A) more occurrences of skin cancer B) greater escape of heat from Earth C) global warming D) smaller flying insect populations