Search our library of Biology GCSE questions

Top answers

Biology

GCSE

How does water move from the soil into plant roots?

The water moves into root hair cells by osmosis, as there is a high concentration of minerals/sugars in the cells, and little water. This decreases the water potential inside the cell, so water molecules ...

Answered by Timothy C. • Biology tutor

33890 Views

Explain the main thermoregulatory processes in humans.

Thermoregulation involves both trying to increase and decrease our body temperature in order to maintain a temperature of 37 degrees celsius. Four main processes exist- convection,

Answered by Harvey W. • Biology tutor

2529 Views

What is transcription?

Protein synthesis is the production of new proteins. This happens in two stages, transcription and translation
Transcription - forming mRNA from DNA
1) The DNA section to be co...

Answered by Rebecca H. • Biology tutor

10829 Views

What is the role of insulin in the body?

Insulin is a hormone released by the pancreas in response to high glucose levels in the blood. It primarily acts to reduce blood glucose levels. It does this by signalling muscle and fat cells to take in ...

Answered by Sophie B. • Biology tutor

5200 Views

Explain the way in which Anti Diuretic Hormone regulates the water content of blood

How much water is in blood is defined by its osmolarity, i.e. how concentrated solutes such as sodium ions are in the blood. The pituitary gland in the brain releases ADH (Anti Diuretic Hormone) if there ...

Answered by Jamie W. • Biology tutor

2495 Views