Levels of Protein Structure

Some proteins are catalysts in chemical reactions, meaning they speed them up. What are these proteins called?

• monomers

• enzymes

• quickens

• neutrons

Which is NOT a function of proteins?

• They provide a hydrophobic membrane

• They act as antibodies in the immune system

• They make-up structures such as muscles

• They regulate cell processes by helping to speed up chemical reactions (enzymes)

The quaternary structure of a protein is

• the simplest structure

• the most complex level

• is less complex than tertiary structure

• is less complex than primary structure

Carbon is perfect for forming large macromolecules because

• Carbon can bond with up to 4 other atoms.

• Carbon can bond with other carbon atoms, forming rings and branched chains.

• Carbon cannot form covalent bonds.

• A and B

Which protein structure is matched correctly?

• primary structure : folded amino acid chains due to hydrogen bonds

• secondary structure : interactions between more than one amino acid chain in a protein

• tertiary structure : 3D structure due to interactions of R groups on amino acids

• quaternary structure : chain of amino acids

Amino acids are the monomer of nucleic acids.

• True

• False

How many structures or stages are there in proteins?

• 1
• 2
• 3
• 4

What is NOT a function of a protein?

• cell energy

• enzymes and body tissue

• antibodies

• contain genetic information

The name of the initial chain of monomers in a protein is called.....

• polypeptide
• polysaccharide
• polyester
• polynucleotide

The two types of folding in the secondary structure are.....

• alpha-helix & beta-pleated sheets
• polypeptide & nucleotide
• globular & fibrous