A&P Macromolecules Quiz Practice

Protein structure achieved when alpha-helical or beta-pleated regions of the polypeptide chain fold upon one another to produce a compact ball-like, or globular, molecule.

• primary structure

• secondary structure

• tertiary structure

• quaternary structure

About 60% to 80% of the volume of most living cells consists of organic compounds.

• True

• False

The sequence of amino acids that form the polypeptide chain.

• primary structure

• secondary structure

• tertiary strucuture

• quaternary structure

It is the difference in the R group that makes each amino acid chemically unique.

• True

• False

Which of the following elements is necessary for proper conduction of nerve impulses?

• Fe [iron]

• I [iodine]

• P [phosphorous]

• Na [sodium]

All organic compounds contain carbon except CO2 and CO.

• True

• False

A dipeptide can be broken into two amino acids by dehydration synthesis.

• True

• False

Which of the following would be regarded as an organic molecule?

• H₂O

• CO₂

• NaOH

• CH₄

The basic structural material of the body consists of ________.

• carbohydrates

• lipids

• proteins

• nucleic acids

The four elements that make up about 96% of body weight are ________.

• carbon, oxygen, phosphorus, calcium

• nitrogen, hydrogen, calcium, sodium

• carbon, oxygen, hydrogen, nitrogen

• sodium, potassium, hydrogen, oxygen