Top answers

Describe how a reflex occurs?

A reflex is an innate (in built) action designed to keep an organism safe from harm. A good example of a reflex is to imagine you touch a hot pan, you immendiately withdraw your hand from the painful stimulu...
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Answered by Isabelle H. • Biology tutor
7954 Views

How does DNA code for proteins?

What is DNA? DNA is the chemical used to store genetic information (inherited traits and characteristics) in the body. The shape of DNA is a double helix (two complementary chains, interwoven). Every chain h...
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Answered by Patrick G. • Biology tutor
26175 Views

What is the difference between type I and type II diabetes?

The most important thing to remember is that type I diabetes is genetic and type II diabetes is mostly influenced by environmental factors (although there is thought to be some genetic influence). Patients w...
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Answered by Daisy Y. • Biology tutor
5028 Views

Explain how amino acids could be identified using gel electrophoresis

The sample of amino acids is placed in the center of a polyacrylamide gel, across which a voltage is applied. Depending on the pH of the buffer, the amino acids will move at different rates towards either th...
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Answered by Eleanor H. • Biology tutor
13346 Views

What is the best way to go about answering a long answer biology question?

Answering questions in biology that offer more marks is all about key words - usually the examiner has a few of these in front of them that offer a mark simply for using the word in your answer. The good thi...
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Answered by Daisy Y. • Biology tutor
7552 Views