Question

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For the Week 2 Critical Thinking Exercise, you will answer the following questions using your critical thinking and reasoning skills: You are comparing two cells, one that is very small in size, and one that is very large in size. Under which conditions would you expect the larger cell to be more successful? Under which conditions would you expect the small cell to be more successful? Explain your answers. What is wrong with the cell membrane structure in the image below? Why is it incorrect? Explain what it should look like, and why it is arranged in that way.

Answer 1

The large cell can produce more energy but the small cell can't. Large cell can store more quantity of food and water.

The small cell has high volume-surface area ratio. By using this extra surface are the small cell can take part in diffusion and osmosis in broader respect.

The tail portion of the lipid molecules should be in inner side and the head portion of the lipid molecules should be outside.

The particular arrangement of lipid molecules given here may be due to the electric shock or change in solvent nature (water to oil).

In water, lipid molecules will show the below arrangement -

889990 Hyolmophilic head - Hydrophobic tail