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Biology
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Describe the process of semi-conservative replication.

DNA is a double-stranded molecule with a base unit on each side held together by hydrogen bonds. A binds to T and C binds to G. DNA polymerase facilitates the localised breaking of these hydrogen bonds. F...

Answered by Nick S. Biology tutor
1862 Views

Describe the factors which affect the rate of diffusion.

Ficks law outlines the factors that affect diffusion. Diffusion gradient is the difference in concentration of the molecule either side of the membrane, the greater the difference the faster the diffusion...

Answered by Nick S. Biology tutor
5027 Views

What is the difference between DNA and RNA?

While they are both nucleic acids, there are going to be a lot of differences between DNA and RNA, starting from the names (deoxyibonucleic acid and ribonucleic acid). In terms of structure, DNA is double...

Answered by Ana-Maria B. Biology tutor
2251 Views

If blood glucose level is high, how does it return back to normal?

When a high blood glucose level is detected by the body, pancreas releases the hormone, insulin, into the bloodstream. The release of insulin results in glucose moving from the blood and into liver and mu...

Answered by Samantha M. Biology tutor
2652 Views

In a population of 1000 lemmings there are two alleles for skin colour, the dominant colour being cream (C) and the recessive being white (c). 350 individuals have white skin. Use Hardy-Weinberg to predict the number of homozygous recessive individuals.

Hardy-Weinberg Principle states that in a population of randomly mating individuals:
p + q = 1
p2+2pq+q2=1
White fur = homozygous recessive = q2 = 350/100 =...

Answered by Igbunu O. Biology tutor
2033 Views

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