Top answers

Biology
A Level

Outline the process of protein synthesis in a cell.

1) Firstly, the instructions to produce a protein are contained within part of the DNA molecule called a gene.

2) This information is copied from the DNA to form another ...

AS
Answered by Aneesh S. Biology tutor
12101 Views

What is active transport and how is it used in the absorption of glucose?

Active transport is the movement of molecules or ions against their concentration gradient, using energy in the form of ATP, across a pl...

NC
Answered by Nicola C. Biology tutor
42267 Views

How does gel electrophoresis seperate DNA?

The DNA from PCR is placed into wells of agarose gel and a buffer solution is poured over it. An electrical current is passed through the gel due to the conduction of the buffer solution. The DNA fragment...

HD
Answered by Holly D. Biology tutor
5367 Views

Explain the structure of DNA.

DNA is a polymer made up from monomer units. The monomers that make up a DNA molecule are called nucleotides. Nuceleotides are made up of a nucelic acid (adenine/guanine/thymine/cytosol); a five carbon...

GC
Answered by Geraldine C. Biology tutor
4599 Views

Explain why an enzyme catalyses only one reaction.

Enzymes only have one active site which is only complementary to one specific substrate. 

LL
Answered by Luckksha L. Biology tutor
17262 Views

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