Question

Function of plasma membrane extensions (mesosome) of prokaryotic cell is

\[ \begin{aligned} \text{I.} \;& \text{Helps in cell wall formation} \\ \text{II.} \;& \text{DNA replication} \\ \text{III.} \;& \text{Secretion process} \\ \text{IV.} \;& \text{Helps in respiration} \end{aligned} \]
(and = all, only = only)

• A. I, II and III only
• B. II, III and IV only
• C. I, II, III and IV
• D. I, III and IV only

Hint:

Mesosomes are associated with \[ \boxed{ \text{Respiration, DNA replication, cell wall formation and secretion.} } \]

Answer 1

The Correct Option is C

Step 1: Recall the functions of mesosomes. Mesosomes are infoldings of the plasma membrane in prokaryotes. They are involved in \[ \boxed{ \begin{aligned} &\text{Cell wall formation} &\text{DNA replication and distribution} &\text{Secretion} &\text{Respiration} \end{aligned} } \]

Step 2: Examine the statements. All the given statements are correct. \[ \boxed{\text{I, II, III and IV}} \]

Step 3: Choose the correct option. Hence, the correct option is \[ \boxed{(C).} \]