Amino Acids

A test on pages 48-49 of the OCR A A2 chemistry textbook

?

1. What is a zwitterion?

  • The pH value at which the amino acid exists as an isoelectric ion.
  • A dipolar ionic form of an amino acid that is formed by the donation of a hydrogen ion from the carboxyl group to the amino group.
  • A positively charged form of the amino acid.
  • A negatively charged form of the amino acid.
1 of 13

Other questions in this quiz

2. What are assembled into proteins?

  • Acids
  • Amino acids
  • Carboxylic acids
  • Esters

3. What groups do alpha amino acids (those in the body) need to have?

  • A acidic amine group and a basic carboxyl group
  • A basic amine group and an acidic carboxyl group connected to the same carbon
  • A basic amine group and an acidic carboxyl group
  • A acidic amine group and a basic carboxyl group connected to the same carbon atom

4. At a pH more alkaline than the isoelectric point...

  • Behaves as a base and donates a proton forming a negative ion.
  • Behaves as a base and donates a proton forming a positive ion.
  • Behaves as a acid and donates a proton forming a negative ion.
  • Behaves as a acid and donates a proton forming a positive ion.

5. What is an amino acid?

  • They are organic compounds with the carboxylic acid functional group
  • They are substances found only in the body to form proteins.
  • The building blocks for the biological molecules, peptides and proteins.
  • The building blocks for biological molecules, polyesters.
View more questions

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Polymers resources »