AP Biology

What is at the 5' end of a nucleic acid?

• Carbon

• Hydroxyl

• Nitrogenous Base 

• Phosphate 

What is at the 3' end of a nucleic acid?

• Carbon

• Hydroxyl

• Nitrogenous Base 

• Phosphate 

What is the direction of DNA synthesis?

• 3' to 5’

• 5' to 3’

• It's anti-parallel so either direction is correct

What type of bond is between nitrogenous bases?

• Covalent

• Hydrogen

• Ionic

• Van der Waals

Where are new bonds formed in a growing polypeptide?

• Amine group

• Carboxyl group

• Hydrogen

• R-group

What is the bond between amino acids called?

• Ester linkage

• Glycosidic linkage

• Peptide bond

• Phosphodiester linkage

What level of protein structure of is described as hydrogen bonds between backbone?

• Primary

• Secondary

• Tertiary

• Quaternary

What level of protein structure of is described as peptide bonds between amino acids?

• Primary

• Secondary

• Tertiary

• Quaternary

What level of protein structure of is described as bonding between two polypeptide chains?

• Primary

• Secondary

• Tertiary

• Quaternary

What level of protein structure of is described as alpha helix/beta-pleated sheet?

• Primary

• Secondary

• Tertiary

• Quaternary