There are several tiny pores in the nuclear envelope through which substances pass between the nucleus and the cytoplasm.

The nuclear envelope separates the contents of the nucleus from the cytoplasm. It is surrounded by a double membrane called the nuclear envelope. It often has a spherical or oval shape and is located in the middle of the cell. The nucleus is the most prominent organelle in the cell that you can see under a microscope.

Cytoplasm contains a group of cellular structures called cell organelles. The protoplasm is differentiated into a nucleus and cytoplasm.

The cell is made up of a protoplasmic mass surrounded by the a cell membrane.

Cells are characterized by their ability to grow, reproduce, respond to external stimuli and perform the different metabolic processes.

The cell is the building unit in all living organisms.

Keep reading for more detailed A-level Biology revision! Summary Organelle structure and functions are necessary for specialised functions such as the nucleus, which contains genetic material, mitochondria, which produce ATP through cellular respiration, and lysosomes, which break down waste materials.

What are the types of the endoplasmic reticulum on the basis of structure?.

What is the function of the nucleus in a cell?.

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