Daily Recall

Q. A sample of DNA is analyzed and found to be 20% adenine. Which of the following would therefore be true?

• The sample contains 30% guanine

• The sample contains 20% uracil

• The sample contains 20% cytosine

• The sample contains 30% thymine

Base pairs are ______, which bond together in the following way: ______.

• Nucleotides that connect via hydrogen bonds; C to T and G to A

• Nucleotides that connect via covalent bonds; C to T and G to A

• Nucleotides that connect via covalent bonds; C to G and T to A

• Nucleotides that connect via hydrogen bonds; C to G and T to A

Q. An intron is _____.

• A piece of the genetic code that needs to be cut out of the mRNA

• A piece of the genetic code that is kept in the mRNA

• A piece of the genetic code that forms a cap at the end of the mRNA molecule

• A piece of the genetic code that forms a tail at the end of the mRNA molecule

Which of the following statements describes promoters and terminators?

• The promoter and terminator sequences are found on DNA

• The promoter and terminator sequences are used in translation

• The promoter sequence starts, and the terminator sequence ends the synthesis of a polypeptide chain from mRNA

• The promoter and terminator sequences are found on mRNA

. Which sequence of amino acids would be translated from the following DNA sequence:

TCA – TAC – GTA – ATC – TTC

• Serine, methionine, histidine, lysine

• Serine, methionine, histidine

• Serine, tyrosine, valine, isoleucine, phenylalanine

• Methionine, serine, histidine, lysine, phenylalanine

Which sequence of amino acids would be translated from the following mRNA sequence:

GAC – UUU – CAG – GCA – ACU

• 1= Asparitic acid,

  2=phenylalanine

  3= glutamine,

  4= alanine,

  5 = threonine

• 1=Asparitic acid, 2=leucine

  3=glutamine

  4=alanine,

  5=threonine

• 1=Glutamine

  2=lysine

  3=valine,

  4=arginine

  5=cysteine

• 1=Glutamine

  2=lysine

  3=valine

  4=arginine

  5=STOP