B1.2 Proteins

Question 1

Draw the diagram of a generalized amino acid

Answer 1

check google doc

Question 2

What is the general structure of all amino acids?

Answer 2

A central carbon atom bonded to:
- An amine group - NH2
- A carboxyl group -COOH
- A hydrogen atom
- An R group

Question 3

What is the word equation for dipeptide bonds?

Answer 3

amino acid 1 + amino acid 2 –> dipeptide + water

Question 4

Draw a peptide bond diagram

Answer 4

check with doc

Question 5

What are the dietary requirements of amino acids?

Answer 5

Our cells can only synthesise non-essential amino acids (11) and the essential amino acids need to be consumed via our diets
– a vegan diet may not be well balanced to fulfill this

Question 6

Describe peptide chain diversity

Answer 6

There are 20 amino acids coded for in the genetic code, and polypeptides can vary in length and amino acids can be in any order.

Question 7

What are examples of polypeptides?

Answer 7

Rubisco. insulin, collagen

Question 8

Define denaturation

Answer 8

The irreversible change of protein conformation

Question 9

What is the effect of high pH and temperature?

Answer 9

Causes denaturation:
Weak hydrogen bonds shaping the protein start to lose its shape hence, causing the shape of the aa to be altered and unable to perform its original function.