Biochemistry - Proteins 2

Primary structure refers to _______

• helix

• pleated sheet

• subunits

• aminoacid sequence

Hydrogen bonds are found only in the secondary structure

• True

• False

Quaternary structure is present only in a protein with many polypeptides

• True

• False

The "Glyco" or sugars in glycoproteins are attached at the _____ level structure of proteins

• primary

• secondary

• quaternary

• tertiary

The prosthetic group in viruses is _________

• sugars

• phosphate

• nucleic acid

• lipid

Tertiary and quaternary structures are stabilised by the same bonds

• True

• False

During protein denaturation, all 4 levels of structure are lost

• True

• False

During hydrolysis a protein is broken into smaller fragments

• True

• False

When proteins are exposed to pH alterations, ____ bonds break

• covalent

• ionic

• hydrophobic

• strong

Animal proteins do not provide ALL essential aminoacids. So, they are considered incomplete proteins

• True

• False