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Biology
GCSE

What does genotype mean?

Genotype is the genetic composition for a particular phenotype. It involves both alleles from both the father and mother. So a genotype of the colour of eyes (blue) could be bb or BB or Bb. 

Answered by Farid A. Biology tutor
3437 Views

What is homeostasis? Describe using an example.

Homeostasis can simply be described as the maintenance of a constant internal environment. Human bodies must get rid of accumulating toxic substances which can harm the body. Things like sugar concentrati...

Answered by Tasneem S. Biology tutor
3887 Views

Explain why the contraction times of the atria and ventricles in the heart differ.

The atria have a shorter contraction time as the ventricles as they only need to pump blood into the ventricles. The contraction time of the ventricles is longer as they need to pump blood through the aor...

Answered by Panayiotis K. Biology tutor
5097 Views

Describe how animals and plants are adapted to survive in dry conditions such as deserts. For each adaptation explain how this helps them survive. (6 marks)

There are many ways that animals are adapted to live in dry conditions. First, a decrease in surface area reduces water loss by minimising sweating. They may also have long eyelashes ...

Answered by Lucy B. Biology tutor
15934 Views

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

Answered by Gal B. Biology tutor
16343 Views

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