Which of the following organelles does not have a cell membrane?

Name the functional unit of $DNA$ that carries genetic information.

In the cell,complex sugars are made from simple sugars by

The Golgi apparatus has a system of membrane-bound vesicles arranged in parallel stacks. What are these called?

Identify the type of cell and write one characteristic feature for each of the following descriptions:
$(i)$ Large vacuole,nucleus pushed to the periphery.
$(ii)$ Cell does not burst even in a very dilute medium.
$(iii)$ Nuclear region is not well-defined and is known as the nucleoid.

Give the chemical composition and functions of plasma membrane and cell wall. Differentiate between the two.