Question

Ribosomes
Plasma
membrane
Cell wall
Nucleoid
what is nucleus​

Answer 1

Answer:

Nucleus is a membrane bound organelle that contains the cell's chromosomes

so option number 3 membrane is correct one

Answer 2

Answer:

Ribosomes are minute particles consisting of RNA and associated proteins that function to synthesize proteins. Proteins are needed for many cellular functions such as repairing damage or directing chemical processes. Ribosomes can be found floating within the cytoplasm or attached to the endoplasmic reticulum.

Plasma membrane is the outermost layer in cells. It separates the content of cell from their external environment. It allows the materials from surrounding to enter and exit the cell. It controls the entry and exit of materials in nd out of cell and hence it is called selectively permeable membrane.

Cell Wall is found in plant cells outside the plasma membrane. It is a rigid covering made up of cellulose which a complex substance is providing structural support to the plants. The contents of the cell wall contracts during loss of water in plant cells by the process of osmosis.

Nucleoid is the undefined nuclear region containing only nucleic acids, in the prokaryotic cells. It is not bounded by a nuclear membrane and lies in direct contact with the cytoplasm.

The nucleus is small, round and membrane bound structure found in cell. The fluid inside the nucleus surrounded by nuclear membrane is called nucleoplasm. It controls the cell's growth and reproduction because it contains cell's hereditary information.

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