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Biology
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Explain how two different species of rabbits could have developed from a common ancestor?

The population of rabbits (common ancestor) must have gotten seperated to form two populations. This could have happened due to a geographical barrier (such as an earthquake). These two ...

PJ
Answered by Precious J. Biology tutor
3367 Views

Translation occurs in living cells. Explain how translation is carried out, from the initiation stage onwards.

Translation is the process where mRNA in the cytoplasm becomes a functional protein. Translation follows transcription, where an mRNA for a protein-coding gene is made. The mRNA leaves the nucleus through...

TM
Answered by Tessa M. Biology tutor
4443 Views

Explanation of the lac operon, based on 9700/41/M/J/18 Question 3

It is made up of 3 genes: lacZ, lacY and lacA which encode for B-galactosidase (LacZ), lactose permease (LacY), and another enzyme (not studied at A level) respectively.The functions of LacZ (the enzyme) ...

JV
Answered by Jose V. Biology tutor
3831 Views

What is osmosis and how does it differ from diffusion

osmosis is the movement of water Across a semi permeable membrane. Water molecules more from an area of high water concentration to an are of low water. This would bean water would move from an area where...

KF
Answered by Kathryn F. Biology tutor
2524 Views

Identify the various structures in a reflex arc in the context of a pin prick. What is the end response and why is this beneficial?

Stimulus --> receptor --> coordinator --> effector --> response. Pin prick --> skin receptors --> sensory neurone --> relay neurone --> motor neurone --> effector muscle --> ...

SP
Answered by Sai P. Biology tutor
2398 Views

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