Question

A bacterial cell, placed in a hypotonic solution does not burst while an
RBC does. Explain the reason for the same.

How does exchange of gases take place in the cells of a leaf. Explain.
(i) Justify the statement 'all cells arise from pre existing cells'.
(ii) Life begins from a single cell. Justify the statement.
(iii) A uni cellular organism can sustain ​

Answer 1

bacterial cell wall have an extra lipid layer which is hydrophobic in nature prevents reverse flow of water when placed in hypotonic water, where as red blood cell lack in lipid layer so they burst open in hypotonic solution.

exchange of gases in plants takes place through stomata.