Top answers

Biology
GCSE

Why is diffusion important in plants and animals? Give examples

The process of diffusion is extremely important for the uptake of substances into cells. These substances can be very important for a whole range of cellular processes. Its also useful in reomoving waste ...

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Answered by Benito W. Biology tutor
70267 Views

Explain the difference between Lamarck’s and Darwin’s theory of evolution? Why was Darwin’s more successful?

Darwin and Lamarck were both scientists who tried to understand evolution.

Lamarck
Lamarck’s theory of evolution was based around how organisms (e.g. animals, plan...

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Answered by Ted H. Biology tutor
426719 Views

How does evolution occur by natural selection?

Over time many theories have been put forward by the scientific community about how the process of evolution occurs. However the most commonly accepted theory amongst scientists is that evoluti...

KW
Answered by Katy W. Biology tutor
12824 Views

What is Homeostasis and how does it work?

To understand homeostasis we first need to understand the meaning- the definition buzz phrase for this word is "the maintenance of a constant internal environment". Therefore it refers to the...

EB
Answered by Elspeth B. Biology tutor
10871 Views

How do organisms obtain energy?

Organisms, such as humans, take in "substrates" such as glucose, in our food.  During a process called respiration, we react these substrates with oxygen to give carbon dioxide and water; thi...

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Answered by Alastair R. Biology tutor
31856 Views

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