1. In terms of molecular biologya gene is best defined as: a) a hertiable unit o

Question

1. In terms of molecular biologya gene is best defined as:

a) a hertiable unit of function;

b) a region of DNAseqence that codes for a protein;

c) a nucleotide sequence that codes for a functional product;

d) a region of DNA sequence that contains the information necessary for transcription of a frunctional RNA product;

e) a region of DNA sequence that can exist as different alleles

2. Anti-influenza drugs such as Tamiflu works by:

a) inhibiting entry of the infulenza virus;

b) inhibiting exit of the influenza virus from host cells;

c) inhibiting replication of the influenza virus genome once infection has occured;

d) enhancing the host (human) immune system response to influenza virus;

e) inibiting insertion of the influenza genome into the human DNA

3. Which of the following types of mutation is LEAST likely to damage the function of a protein if it occurs in the coding region of a protein-coding gene?

a) missense mutation

b) nonsense mutation

c) frameshift mutation

d) double-strand DNA break

4. in eukaryotes, the correct "reading frame" for translation is specifically established by:

a) the ribsosome binding site

b) the promoter sequence at the beginning on the gene

c) the first intron-exon boundary in the sequence

d) the first start codon AUG in the mRNA

5. Total nucleic acids are extracted from a culture of animal cells and are thenmixed with resin beeds to which the polynucleotide 5'-TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT-3' has been covalently attached. After a short incubation, the beads are then extracted from the mixture. When you analyze the cellular nucleic acids that have stuck to the beads, which of the following is must abundant?

a) DNA b) tRNA c) rRNA d) mRNA

Explanation / Answer

1)C

2)B

3)D

4)B

5)C

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