Question

Mention the change in human red blood cells when they are placed in hypotonic salt/sugar solution.

State two important functions of the nucleus of a cell. OR Who discovered living cells in organisms? Give an example of unicellular organism.

Name the cell organelle other than nucleus which contain DNA and able to synthesise their own protein.​

Answer 1

Explanation:

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Answer 2

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• A red blood cell will swell and undergo hemolysis (burst) when placed in a hypotonic solution. When placed in a hypertonic solution, a red blood cell will lose water and undergo crenation (shrivel).

• This organelle (nucleus) has two major functions: it stores the cell's hereditary material, or DNA, and it coordinates the cell's activities, which include growth, intermediary metabolism, protein synthesis, and reproduction (cell division). Only the cells of advanced organisms, known as eukaryotes, have a nucleus.

• Robert Hooke discovered cells in living organisms. Amoeba is an example of Unicellular organism.

• Chloroplasts and mitochondria are subcellular bioenergetic organelles with their own genomes and genetic systems.