Year 12 Proteins

What monomer is represented here

(a)  

Label the different sections of this amino acid

a

b

c

Carboxly group

Variable R group

Amino group

Which "group" of the amino acid is different between each amino acid

• The carboxyl group (COOH) of the amino acid.
• The amino group (NH2) of the amino acid.
• The R group (side chain) of the amino acid.
• The backbone (alpha carbon) of the amino acid.

Name the process that joins two amino acids together

(a)  

Condensation reaction involves the ​ (a)   group of one amino acid interacting with the ​ (b)   group of ANOTHER amino acid. The first amino acid loses a ​ (c)   and hydrogen, while the second amino acid loses a ​ (d)   . These lost elements form water and a ​ (e)   bond forms between the two amino acids, joining them together to form a peptide (polymer).

• carboxyl
• amino
• carbon
• hydrogen
• peptide
• hydroxyl
• amine
• phosphate
• chain
• nitrogen

Which "groups" on the amino acid are involved in condensation

• Amino group and hydroxyl group
• Carboxyl group and side chain
• Amino group and carboxyl group
• Amino group and phosphate group

Which elements are lost from the amino acids during condensation

• O

• H, O

• H, H

• C, O

What is a byproduct of a condensation reaction?

• Carbon dioxide
• Oxygen
• Glucose
• Water

What is the name of the bond that forms between two amino acids during condensation

(a)  

Multiple instances of condensation with form a chain of amino acids known as a polypeptide chain. These chains can take various structural forms. What is type of protein structure is shown here

(a)