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Is all of a persons DNA used to create the body?

This is a common question. After learning about translation in A-level biology and the importance of converting DNA into proteins (the building block of organisms), students often assume that all DNA is used...
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Answered by Jemima S. • Biology tutor
2879 Views

Describe how ventilation of the lungs occurs.

Ventilation is the process of moving air in and out of the lungs. This is brought about by pressure changes in the thoracic cavity. During inspiration, the diaphragm contracts causing it to flatten and move ...
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Answered by Emily S. • Biology tutor
4652 Views

How do fish take in oxygen from the enviroment?

The route of respiration for aquatic animals is via the gills. Oxygen absorption takes place as water, drawn in through the mouth is pushed out through the gill slits so flow is unidirectional (unlike mammal...
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Answered by Sarah D. • Biology tutor
6026 Views

Name the order of taxon classifications starting with domain and a key feature of each of the domains.

Domain-> Kingdom-> Phylum-> Class-> Order-> Family-> Genus-> Species Bacteria- No membrane-bound organelles Archaea- A cell wall lacking peptidoglycans Eukarya- Cells with a nucleus
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Answered by Bethan R. • Biology tutor
3139 Views

What is the role of neurotransmitters at synpatic junctions?

Firstly, it is important to understand what a synaptic junction is and its purpose. A synaptic junction is a type of gap junction between the pre-synaptic and post-synaptic membranes of two neurones. Neurotr...
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Answered by Karin D. • Biology tutor
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