Multiple Choice
In the context of protein structure, what is the monomer (basic building block) of a protein?
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1. Introduction to Biochemistry
Proteins
Multiple Choice
Which of the following is NOT a typical role of proteins in biological systems?
A
Structural support in cells and tissues (e.g., collagen, keratin)
B
Catalysis of biochemical reactions (enzymes)
C
Transport of molecules (e.g., hemoglobin carrying oxygen)
D
Long-term storage of genetic information
Verified step by step guidance1
Step 1: Understand the typical roles of proteins in biological systems. Proteins commonly function in structural support, catalysis, transport, signaling, and regulation.
Step 2: Review each option given: Structural support (e.g., collagen, keratin) is a well-known protein function providing mechanical strength to cells and tissues.
Step 3: Catalysis of biochemical reactions is performed by enzymes, which are proteins that speed up chemical reactions essential for life.
Step 4: Transport of molecules, such as oxygen carried by hemoglobin, is another classic role of proteins facilitating movement of substances within organisms.
Step 5: Recognize that long-term storage of genetic information is not a protein function; this role is primarily carried out by nucleic acids like DNA and RNA.
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