The drug AZT was one of the first drugs used to treat HIV. Which of the following drug actions would prevent the spread of HIV without harming the host cell?
prevention of the formation of glycoproteins
inhibition of reverse transcriptase
inhibition of DNA polymerase
destruction of amin...
The drug AZT was one of the first drugs used to treat HIV. Which of the following drug actions would
prevent the spread of HIV without harming the host cell?
prevention of the formation of glycoproteins
inhibition of reverse transcriptase
inhibition of DNA polymerase
destruction of amino acids that are vital to viral protein synthesis - correct answer
inhibition of reverse transcriptase
A virus infects a cell and randomly inserts many short segments of DNA containing a stop codon
throughout the organism's chromosomes. This will probably cause _____.
no deleterious effects, as long as the stop codons are not also inserted into tRNA
incorrect pairing between mRNA codons and amino acids
the DNA to break up into thousands of short segments
manufactured proteins to be short and defective - correct answer
manufactured proteins to be short and defective
The copying mechanism of DNA is most like
carving a figure out of wood.
, dripping water out of a faucet.
taking a picture of yourself and of your reflection in a mirror.
mixing flour, sugar, and water to make bread dough. - correct answer taking a
picture of yourself and of your reflection in a mirror.
A geneticist found that a particular mutation had no effect on the polypeptide encoded by a gene. This
mutation probably involved _____.
deletion of one nucleotide
alteration of the start codon
insertion of one nucleotide
substitution of one nucleotide - correct answer substitution of one nucleotide
Frederick Griffith was one of the leading scientists looking at the genetic role of DNA. He was working on
two strains of Streptococcus pneumoniae: The rough strain (R) did not cause pneumonia, but the
smooth strain (S) did. When Griffith heat-killed the S strain and gave both the heat-killed S strain and the
R strain to mice, the mice developed pneumonia and died. What happened in this experiment that
caused the mice to develop pneumonia?
The R strain mutated and thus was able to cause pneumonia.
There was more of the R strain added than previously.
The immune systems of the mice were unable to cope with both the S and R strains simultaneously.
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