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Biology
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What is respiration and why is it needed?

Respiration is the process of using energy stored in complex organic molecules (such as carbohydrates, fats and proteins) to make ATP.

ATP (Adeno...

AS
Answered by Aneesh S. Biology tutor
9703 Views

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
12349 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
43058 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
5772 Views

Which best describes the function of a cell membrane? (a) It keeps the cell in shape. (b) It controls the substances entering and leaving the cell. (c) It controls the substances entering the cell. (d) It supports the cell structures.

This is an example of how you can get around not knowing an answer in a multiple choice question by using some basic knowledge and powers of deduction.

(a) "it keeps the cell in shap...

RW
Answered by Rebecca W. Biology tutor
14411 Views

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