a) Explain two roles of diffusion in human beings b) What is meant by each of the following terms?

      

a) Explain two roles of diffusion in human beings
b) What is meant by each of the following terms?
I) Crenated cell.
II) Flaccid cell.

  

Answers


John
a) - Absorption of digested foods such as glucose, amino acids in the ileum into the blood stream.

- Exchange of gases across the alveolus diffuse from capillaries to the blood.

-Excretion of nitrogenous wastes from cells e.g urea from blood capillaries into elimination sites

b) i) It's an animal cell that loses water by osmosis and shrinks when placed in a hypertonic solution to their cytoplasm.

ii) It's a plant cell that loses water by osmosis, becomes flabby or shrinks when placed in a hypertonic solution to their cytoplasm
johnmulu answered the question on May 1, 2017 at 06:44


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