Top answers

What are the key elements of an internal investigation?

The key elements which will help you achieve top marks in your IA are personal engagement, primary data, data manipulation and findings from other investigations similar.
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How can I learn all the difficult memory facts if I am not good at memorisation?

Don't panic! This is a thought that goes through every student who does IB or A Level Biology, and the answer is that there are an endless number of techniques and tricks that can help every different type o...
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Answered by Ana G. • Biology tutor
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How does the process of transcription work?

Transcription is the first part of gene expression - making DNA into functional proteins. It occurs in the nucleus of cells. During transcription, information from DNA is transcribed into messenger RNA (mRNA...
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Answered by Anja D. • Biology tutor
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What is the difference the secondary structure and tertiary structure of a protein?

Secondary Structure The secondary structure of a protein refers to the basic foldings of a protein the forms of: 1. an alpha helix 2. a beta-pleated sheet These foldings are determined by hydrogen bonds. The...
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Answered by Daniella A. • Biology tutor
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How are action potentials propagated along a neuron?

Electical impulses usually arrive at the dendrites of a neuron. These then pass through the cell body and a propagated down the longest part of the neuron, the axon. Resting potential This is the potential d...
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Answered by Ollie W. • Biology tutor
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