Food poisoning associated with Staphylococcus aureus , is due to the intoxication with exfoliative toxins.
a. true
b. false
Ans: b. false
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Avery used the enzyme _______ to remove the proteins from the cell extracts
A. protease B. DNase C. RNase D. All of the answers are correct
Black smokers produce a fluid rich in:
a. copper sulfides. b. iron sulfides. c. zinc sulfides. d. magnesium sulfides. e. sodium chloride.
Codons are three-base sequences in mRNA. Which information is specified by a codon?
A) a complete trait, or characteristic, of an organism B) the amino acid sequence of an entire protein C) an amino acid to be added to a growing chain D) the nucleotide that comes next in a DNA sequence
Gene flow, defined as the movement of genes from one population to another, can take place by migration as well as
A. mating between individuals of adjacent populations. B. mating with certain trait-containing individuals. C. mating with dominant phenotypes. D. removing the barriers between the populations. E. physical movement of genes within an individual by transposons.