Which statement is true of all proteins?(1 point)

Question

Responses

Their main function is to cause mutations.
Their main function is to cause mutations.

They carry oxygen in human blood.
They carry oxygen in human blood.

Their structure is related to their function.
Their structure is related to their function.

They are created by mutations in DNA.

explain

Answer 1

The correct statement about all proteins is:

"Their structure is related to their function."

Explanation:

1. Proteins and Structure-Function Relationship: All proteins are made up of amino acids and have specific three-dimensional shapes (structures) that determine their specific functions in biological systems. For example, the shape of an enzyme allows it to catalyze a particular reaction, and the structure of hemoglobin enables it to effectively carry oxygen in the blood.

2. Reasons Other Options Are False:

   • "Their main function is to cause mutations.": This is incorrect. Proteins do not cause mutations; they can interact with DNA but mutations are typically the result of errors during DNA replication or environmental factors.
   • "They carry oxygen in human blood.": This statement is only true for specific proteins, like hemoglobin. Not all proteins in the body are involved in oxygen transport.
   • "They are created by mutations in DNA.": This statement is misleading. While mutations in DNA can lead to changes in how proteins are made (which may affect their function), proteins are synthesized based on the genetic code in DNA following normal cellular processes (transcription and translation).

Thus, the general principle that applies to all proteins is that their specific structure is intimately related to their function.