Multiple Choice
In gastric protein digestion, the primary role of hydrochloric acid (HCl) is to:
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1. Introduction to Biochemistry
Proteins
Multiple Choice
Which of the following is NOT a function of proteins in living organisms?
A
Transport of molecules (e.g., oxygen transport by hemoglobin)
B
Structural support (e.g., collagen in connective tissue)
C
Catalysis of biochemical reactions (enzymes)
D
Long-term storage and transmission of genetic information
Verified step by step guidance1
Step 1: Understand the primary functions of proteins in living organisms. Proteins are involved in various biological roles such as transport, structural support, and catalysis.
Step 2: Review the examples given: transport of molecules (like oxygen by hemoglobin), structural support (like collagen), and catalysis (enzymes). These are well-known protein functions.
Step 3: Recognize that long-term storage and transmission of genetic information is primarily the role of nucleic acids (DNA and RNA), not proteins.
Step 4: Compare the options and identify that the function 'long-term storage and transmission of genetic information' does not belong to proteins but to nucleic acids.
Step 5: Conclude that the correct answer is the function that is NOT performed by proteins, which is the long-term storage and transmission of genetic information.
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