Molecular Bio Quiz 1

The central dogma shows that the flow of genetic information typically follows...

• Protein-->DNA-->RNA

• RNA-->DNA-->Protein

• DNA-->RNA-->Protein

Which of the following are features of a double stranded DNA molecule?

• phosphodiester bond

• ribose

• nitrogenous base

• peptide bond

• amino acid

Match the following nitrogenous bases to the normal base pair.

• Guanine + Cytosine

• Adenine + Thymine

• Uracil + Adenine

• Uracil + Thymine

Which of these nitrogenous base pairs are purines (a two-ringed structure consisting of a nine-membered molecule with four nitrogen atoms):

• Guanine

• Uracil

• Adenine

• Cytosine

Which of these nitrogenous bases are pyrimidines (having only 1 single ring with 6 members and 2 nitrogen atoms):

• Adenine

• Thymine

• Uracil

• Cytosine

• Guanine

List the hydrophobic amino acids

List the Hydrophilic amino acids:

What is the primary structure of proteins determined by?

• hydrophilic interactions

• the sequence of amino acid residues linked by covalent peptide bonds

• hydrogen bonds between amino acid side chains

• hydrophobic interactions

What is the secondary structure of proteins determined by?

• hydrophilic interactions

• the sequence of amino acid residues linked by covalent peptide bonds

• hydrogen bonds of the peptide backbone that causes amino acid to fold

• hydrophobic interactions

What makes up the tertiary structure of proteins that causes 3D folding due to side chain interactions?

• phosphodiester bonds

• hydrogen bonds

• covalent bonds

• hydrophobic interactions