Biochemistry 1st Quiz

Mention the universal features of living cells

• Cytoplasm

• Mitochondria

• Nucleus/nucleoid

• Plasma membrane

Mention the domains of life

• Archaea

• Bacteria

• Eukarya

• Fungi

Proteins are polymers of (a)  

(a)   different amino acids are commonly found in proteins.

This picture is general structure of an amino acid. They have ....

• Amino group

• Carboxyl group

• Hydroxyl group

• R groups

Amino acids can be classified by R groups, except ....

• Non polar aliphatic

• Polar aliphatic

• Polar uncharged

• Aromatic

• Positively and negatively charged

Each amino acid residue joined to its neighbor by a specific type of (a)  

Polymers of amino acids are called the .....

• Amino acids

• Peptides

• Proteins

Two amino acid molecules can be covalently joined through a substituted amide linkage, termed a peptide bond, to yield a dipeptide. Such a linkage is formed by (a)   from the α-carboxyl group of one amino acid and the α-amino group of another

These are the properties of protein

• Mediate every process in a cell

• Part of molecular mechanism of biological process

• Most abundant, great variety, size and function

• Expression of genetic information

• Produce sugars and polysaccharides