Question

cells and cells organalls in biology 8th class
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Answer 1

Answer:

Definition of cell-

Cell is the basic structural and functional unit of life.

Definition of cell membrane-

Cell membrane is the boundary of each cell which separates the cytoplasm from surrounding.

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Answer 2

Answer:

Explanation:

The word cell is derived from a Latin word, cellula, which means small compartments. The study of cells is called cytology. Robert Hooke an English scientist was the first person to discover and coined the term cell.

Definition: Cell is the structural and functional unit of all living organisms.

CELL ORGANELLES  AND ITS FUNCTION S

1. Mitochondria  : Performs the function of respiration and releases energy.

2.Endoplasmic reticulum  : Transport of materials and provide internal support.

3.Chloroplast  : Traps sunlight for photosynthesis.

4.Ribosomes  : Protein synthesis

5.Centrosomes  : Cell division

6.Lysosomes  : Destroys foreign materials, removes old and worn out cells.

7.Golgi complex  : Secretes certain hormones and enzymes in the cell.

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