Amino Acid ,protein And DNA

Question 1

What two groups are involved in forming an amino acid

Answer 1

Amine
And carboxylic acid

Question 2

What is the general structure of an amino acid

Answer 2

NH2-CH-CO2H
|
R

Question 3

Are amino acids optically active

Answer 3

All amino acids are chiral because they have four different groups around the C

Question 4

Why do amino acids have high melting points

Answer 4

The ionic interaction between zwitterions as opposed to the weaker hydrogen bonding

Question 5

What is a zwitterions

Answer 5

Where there are two charges on either side of the molecule

Question 6

What is the PH like when amino acids are in alkaline conditions

Answer 6

PH is high

Question 7

What is PH in acidic solution

Answer 7

Low PH

Question 8

Why do Amino acids act as weak buffers

Answer 8

If small amounts of acids or alkali are
added to the amino acid

Question 9

What are dipeptides

Answer 9

Simple combination molecules of two amino acids with one amide link