Question

Match the LIST-I with LIST-II

LIST-I Type of Proteins	LIST-II  Examples
A. Structural proteins	IV. Collagen
B. Transport Proteins	I. Ion Channels
C. Hormonal Proteins	II. Insulin
D. Storage Proteins	III. Seed Proteins

Choose the correct answer from the options given below:

• A. A-I, B - II, C - III, D - IV
• B. A-II, B-III, C - I, D - IV
• C. A-IV, B - I, C - II, D - III
• D. A-III, B - IV, C - I, D - II

Hint:

When tackling matching questions, start with the pairs you are most confident about. Most students know that Insulin is a hormone (C-II) and Collagen is structural (A-IV). This combination (A-IV, C-II) is only found in option (C), allowing you to solve the question quickly.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
The question requires matching different functional classes of proteins with their specific examples.
Step 2: Detailed Explanation:
Let's analyze each protein type and find its corresponding example:

A. Structural proteins: These proteins provide support, shape, and framework to cells, tissues, and organisms. Collagen is the most abundant protein in mammals, forming the main structural component of connective tissues like skin, tendons, and bones. Thus, A matches with IV.
B. Transport Proteins: These proteins facilitate the movement of substances across cell membranes or throughout the body. Ion Channels are a classic example; they are transmembrane proteins that form pores allowing specific ions to pass through the cell membrane. Another example would be hemoglobin, which transports oxygen. Thus, B matches with I.
C. Hormonal Proteins: These proteins act as chemical messengers to regulate physiological processes. Insulin is a well-known protein hormone that regulates blood glucose levels. Thus, C matches with II.
D. Storage Proteins: These proteins serve as a reserve of amino acids and nutrients. Seed Proteins, such as albumin and globulin found in seeds of legumes and cereals, store amino acids for the developing embryo during germination. Ovalbumin in egg white is another example. Thus, D matches with III.
Step 3: Final Answer:
The correct set of matches is A-IV, B-I, C-II, D-III, which corresponds to option (C).