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GCSE

State the difference between a malignant and benign tumor is and describe how tumors form

Malignant tumors are cancerous, harmful tumors whereas benign are non-cancerous. Tumors are caused by a mutation which causes uncontrolled cell division.

Answered by Esther W. • Biology tutor

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An Enzyme has lost is function, it has become denatured. What can be the cause of denaturation? Why does the enzyme no longer function?

High temperature can cause the denaturation of proteins (enzymes), this is due to bonds in the proteins breaking. The shape of the active site no longer works, the lock and key mechanism is no longer achi...

Answered by Henry K. • Biology tutor

5285 Views

Describe how water moves through the cells of a plant

Water moves via osmosis; this process is where water moves from an area of higher water potential to an area of low water potential with no energy required to be inputed into the system.

Answered by Jack H. • Biology tutor

2802 Views

By what process do plants move ions from the soil exterior to the plant, into the root cells of the plant?

Active Transport

Normally soil ion concentrations will be low, and high in the root cells. The ions have to move up a concentration gradient and therefore requires an energy-using process to...

Answered by Miss T. • Biology tutor

3092 Views