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How do white blood cells differ from red blood cells?

Red blood cells have a biconcave shape and an absence of a nucleus in order to increase the area for which it can carry oxygen around the body and remove carbon dioxide from the body. Red blood cells cont...

Answered by India W. • Biology tutor

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Josie walks into her house from outside, as she enters a dark room, a spider falls in front of her face, describe the changes that occur in the eye to visualise a close up object in the dark.

This question aims to address the following learning objective:To be able to relate the structures of the eye to their functions. This includes: accommodation to focus on near or distant objects and adapt...

Answered by Michaela G. • Biology tutor

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What are the different parts of a plant cell and what are their functions?

Cell membrane
Cytoplasm
Nucleus
Ribosomes
Golgi body
Chloroplasts
Mitochondria

Answered by Ben C. • Biology tutor

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In a fish and chips shop, the potatoes are cut hours before they are cooked, but they must not dry out. To stop this, the owner soaks them in a salt solution. Define the process of osmosis and explain what would happen if you used distilled water.

Osmosis can be described as the movement of water from a high concentration to a low concentration through a semi permeable membrane.In this example the salt solution has roughly the same concentration of...

Answered by Vikram S. • Biology tutor

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