Which of the following components provides a sticky character to the bacterial cell?

Read the sentences properly and select the correct option for mesosome.
$(i)$ Mesosome is an extension of the plasma membrane.
$(ii)$ These extensions are only in the form of spheres.
$(iii)$ Mesosomes help in cell wall formation and $DNA$ replication (not $RNA$ synthesis).
$(iv)$ They help in respiration.

Mesosomes are the infoldings of $..............$.

Which of the following is absent in prokaryotes?

What is the primary difference between prokaryotic and eukaryotic cells regarding their internal structure?

The part of the appendage that extends into the cytoplasm is: