2.4b MHS IB Bio

The sequence of amino acids forming a polypeptide is known as the _____ structure of a protein.

• primary

• secondary

• tertiary

• quaternary

The chains of amino acids folding or turning on themselves and held by hydrogen bonds between non adjacent amine and carboxylic groups is known as the _____ structure of a protein.

• primary

• secondary

• tertiary

• quaternary

The folding and coiling into a three dimensional structure based on interactions between R-groups is known as the _____ structure of a protein.

• primary

• secondary

• tertiary

• quaternary

The interaction between multiple polypeptides or prosthetic groups is known as the _____ structure of a protein.

• primary

• secondary

• tertiary

• quaternary

The level of structure most important to enzyme function is the _____ structure.

• primary

• secondary

• tertiary

• quaternary

Fibrous proteins are generally ______ in water, while globular proteins are generally ______ in water.

• insoluble; soluble

• soluble; insoluble

Catalase, hemoglobin, insulin, and immunoglobulin are examples of ________ proteins.

• fibrous

• globular

The function of collagen is

• tensile strengthening.

• membrane transport.

• immunity.

• muscle contraction.

The function of insulin is

• a hormone.

• packing of DNA.

• catalysis.

• blood clotting.

The enzyme that fixes CO₂ from the atmosphere into a usable form is

• rubisco.

• insulin.

• rhodopsin.

• immunoglobulins.