Consider the following two statements about protein structure:
1 - All polypeptides have tertiary structure.
2 - All proteins have quaternary structure.
Which of the two statements above is CORRECT?
A)Statements 1 and 2 are both true.
B)Statements 1 and 2 are both false.
C)Statement 1 is true; statement 2 is false.
D)Statement 1 is false; statement 2 is true.

Question

Consider the following two statements about protein structure: 
1 - All polypeptides have tertiary structure.
2 - All proteins have quaternary structure.
Which of the two statements above is CORRECT?
A)Statements 1 and 2 are both true.
B)Statements 1 and 2 are both false.
C)Statement 1 is true; statement 2 is false.
D)Statement 1 is false; statement 2 is true.

Quizplus · Accepted Answer

Statement 1 is true because all polypeptides have a tertiary structure, which is the three-dimensional structure of a single polypeptide chain. Statement 2 is false because not all proteins have a quaternary structure, which is the three-dimensional structure of multiple polypeptide chains.

Consider the Following Two Statements About Protein Structure