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Biology
GCSE

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
2083 Views

Endocrine glands release hormones, suggest what would happen in the body of a person with hyperthyroidism.

There is too much thyroxine is released into the blood which raises the person's basal metabolic rate. This will lead to an increase in formation of glycogen, lipids and proteins. This will also increase ...

Answered by Nimryta S. Biology tutor
6881 Views

What exactly is Natural selection?

Natural selection is the concept that individuals in a population that are best adapted to their environment are most likely to survive and succeed to breed and produce offspring. In turn, the offspring w...

Answered by Joel K. Biology tutor
2021 Views

What is meant by the term mutation?

It is a random and spontaneous change to DNA that can be inherited. Most mutations have no effect on the phenotype, however some have a small effect and rarely do some have a significant effect.

Answered by Sebastian S. Biology tutor
2327 Views

Describe how you would test for the presence of glucose in fruits

firstly, macerate the fruit and add a few drops of clear blue Benedict's solution place in a hot waterbath to heat mixture for 5 minutesif glucose is present, the solution will turn from blue to a brick r...

Answered by Sinchana L. Biology tutor
12206 Views

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