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Outline the Stages of Mitosis

Pre-Mitosis: Interphase: - DNA as uncondensed chromatin - DNA contained within nucleus - Centrosomes etc duplicated - Cell enlarged Stages of Mitosis Prophase: - DNA Supercoils & chromosomes condense - C...
DW
Answered by Daisy W. • Biology tutor
4785 Views

Can you explain what the stages of a reflex action are; for example what actually happens when you touch a hot object?

Firstly, the whole point of a reflex is to create a QUICK reaction to a STIMULUS. So, the first stage of a reflex is SENSATION - i.e when you first touch the hot object the receptors in the skin will sense t...
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Answered by Kinari P. • Biology tutor
11629 Views

I struggle with exam timing and as a result I always run out of time before finishing the paper. How can avoid this in the future?

This is a fairly common problem across many A level subjects but in my experience particularly amongst those taking biology papers. Whilst there are several strategies to counteract this, such as prioritisin...
RC
Answered by Rory C. • Biology tutor
4164 Views

Describe ways in which the body prevents entry of microorganisms

The first line of defence is the skin. This forms a physical barrier that prevents any microorganisms from getting into the body. Acid in the stomach, due to the low pH, is another defence the body has. This...
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Answered by Adrian C. • Biology tutor
18129 Views

In A level biology exams there is a large focus on data interpretation questions. What is the best way to approach this style of question?

Often this particular style of question ranks amongst the most poorly answered by students. However, it is often very easy to pick up marks without any knowledge of the subject matter whatsoever. The first s...
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Answered by Rory C. • Biology tutor
7673 Views