BIO 150 - Translation & Metabolism

Which component of the basic amino acid structure determines its chemical properties?

• carboxyl group

• R group (side chain)

• central carbon

• amino group

Which of the following levels of protein structure is described as a sequence of amino acids?

• primary

• secondary

• tertiary

• quaternary

What best describes the tertiary level of protein structure?

• overall 3-D shape of a polypeptide

• interactions between multiple polypeptide subunits

• sequence of amino acids

• interactions between nearby amino acids

Which of the following is not true of the secondary level of protein structure?

• results from hydrogen bonding

• involves alpha helices

• involves beta-pleated sheets

• all of the above are true

Which of the following levels of protein structure involve interactions of multiple polypeptide subunits?

• primary

• secondary

• tertiary

• quaternary

True OR False:

All proteins make it to the quaternary level of protein structure.

• True

• False

Which of the following is NOT true regarding denaturation of proteins?

• makes protein biologically inactive

• can be caused by change in temperature

• changes the overall shape of the protein

• can be caused by exposure to extreme pH

• 
  all of the above are true

True OR False:

Translation involves taking the information from the messenger RNA (mRNA) to produce a polypeptide.

• True

• False

What is the correct flow of movement for all new amino acids in the ribosome?

• E <-- P <-- A

• A <-- E <-- P

• P <-- A <-- E

• E <-- A <-- P

Where is the tRNA with the growing polypeptide chain located in the ribosome?

• A site

• P site

• E site

• none of the above