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How does the structure of DNA make it an effective carrier of genetic information?

DNA is a very long molecule (one cell contains about 2 metres of DNA!), meaning its coiled structure around proteins called histones allows it to fit into the small space of the nucleus. It also ...

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Answered by Charlotte C. • Biology tutor

4050 Views

How does acetylcholine transmit the nervous impulse across a synapse?

An action potential from the axon arrives at the presynaptic neuron, stimulating voltage-gated calcium (Ca²⁺) ion channels to open. This allows calcium ions to diffuse into the synaptic knob, c...

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Answered by Charlotte C. • Biology tutor

4208 Views

What is the structure of DNA?

DNA (DeoxyriboNucleic Acid) is a polymer (a molecule made up of many repeated subunits which form a chain). The subunit of DNA is a DNA nucleotide.

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Answered by Hannah T. • Biology tutor

8791 Views

Name and explain the different modes of inheritance.

Modes of Inheritance:

- Autosomal dominant inheritance; In this mode of inheritance you only need the abnormal gene (e.g. a dominant allele) from ...

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Answered by Deborah I. • Biology tutor

3136 Views

What does the nervous system consist of and explain the differences between the two.

There are two parts of the nervous system:

Central Nervous system (CNS) and Peripheral Nervous system (PNS).

- The CNS is ...

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Answered by Deborah I. • Biology tutor

2348 Views

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