Which of these is the simplest amino acids in which the alpha carbon is bonded to two hydrogen atoms

• Glycine

• Valine

• Alamine

• Methionine

Which of these two terminals is the beginning of a peptide

• N terminal

• C terminal

Three of these codons don't code for amino acids except

• UAA

• UAG

• UGA

• UGU

D amino acids are rare, however, they can be found in some

• Enzymes

• Hormones

• Bacteria

• Antibiotics

Formation of dipeptides from polypeptides

• Condensation

• Hydrolysis

• Oxidation

• Phosphorylation

Formation of dipeptides from amino acids

• Hydrolysis

• Condensation

• Oxidation

• Phosphorylation

How many buffer regions does an amino acid without a side chain have?

• 1

• 2

• 3

• 4

A particular amino acid is well known for its di sulphide bridges. This is

• Cysteine

• Glutamate

• Proline

• Valine

Zwitterion is

• Positively charged

• Negatively charged

• Net zero charge

• Very soluble in water

Acidic amino acids are also

• Aromatic

• Negative

• Positive

• Sulphur containing