Question

Match List I with List II:

List I (Enzyme)	List II (Function)
(A) Cytochrome oxidase	(I) Electron transport system
(B) Topoisomerases	(II) Change linking number
(C) Cohesins	(III) DNA Replication
(D) PCNA	(IV) Cell cycle

Choose the correct answer from the options given below:

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (I), (B) - (III), (C) - (II), (D) - (I)
• (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Hint:

Understand the functional roles of each enzyme and match them to their specific processes.

Answer 1

The Correct Option is C

1. Cytochrome oxidase is the terminal enzyme in the electron transport chain that facilitates the transfer of electrons to oxygen, forming water and aiding ATP synthesis.
2. Topoisomerases are enzymes that regulate DNA topology by changing the linking number, enabling processes like unwinding during replication and transcription.
3. Cohesins are protein complexes critical for DNA replication, ensuring that sister chromatids remain bound together until segregation.
4. PCNA (Proliferating Cell Nuclear Antigen) is a DNA clamp essential for DNA replication and repair and is closely associated with cell cycle progression.