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Biology
KS3

Describe the process of natural selection

There is variation naturally present between members of a species. These variations can prove advantagous, thus making an individual in a species better adapted for survival. For example, giraffes with a ...

Answered by Julia C. Biology tutor
2173 Views

What are some of the difference between prokaryotes and eukaryotes

Replication- Porkaryotes undergo binary fission, whereas eukaryotes undergo mitosis/meiosisOrganelle- Prokaryotes have no membrane bound organelle. Ribosomes in prokaryotes are 70S and 80S in eukaryotes. ...

Answered by Alice R. Biology tutor
2072 Views

Describe three properties that all respiratory surfaces must have and explain why they must have them.

Respiratory surfaces must be thin (such as in alveoli which have walls that are 1 cell thick) to create a small diffusion distance for the gases to be exchanged through. They must also have a large surfac...

Answered by Isabel M. Biology tutor
13173 Views

Why is Respiration important for living organisms? (3)

Respiration releases Energy(1), Energy in the form of ATP(1) and this is needed for life of an organism to bring about various moments and growth (1).

Answered by Holly L. Biology tutor
6336 Views

What is osmosis?

Osmosis is a process whereby molecules of a higher concentration go to an area of a lower concentration. For instance, if you have a bag made of porous material, such as cellulose, you fill it with orange...

Answered by Enderjeet K. Biology tutor
2572 Views

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