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List 3 differences between a plant cell and an animal cell

Plant cells have choloroplasts and animal cells do not, plant cells have a vacuole and animal cells do not, plant cells have a cell wall while animal cells only have a membrane
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Answered by Gal B. • Biology tutor
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Lipids are molecules that are derived from

3 Fatty acid chains and 1 Glycerol
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Answered by Stephen A. • Biology tutor
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Two snails belong to the same species. Yellow shelled snails found in grassland areas, dark shelled ones in woodland. Shell colour determined by genes. Explain how natural selection could have caused this distribution of snails

The yellow banded shell provides camouflage to the snail in grassland areas. These are more difficult for the birds to see, so less are eaten by predation. As a consequence, more yellow banded snails survive...
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Answered by Leah B. • Biology tutor
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What are the differences between diffusion, osmosis and active transport?

Diffusion is the net movement of particles in solution across a partially permeable membrane. The net movement of particles is from higher to lower concentration gradient. Osmosis is the net movement of wate...
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Answered by Thomas W. • Biology tutor
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Describe the conducting circuit in the heart

The heart is a muscular pump which pushes blood out to the body. It does this by contracting the muscle fibres which sqeezes the blood out. The heart has 4 chambers. Blood comes into the top two chambers, ca...
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Answered by Clodagh M. • Biology tutor
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