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Describe each stage of mitosis

Mitosis takes place after interphase in which the DNA in the nucleus replicates in preparation for the cell to become two daughter cells. Prophase is the first stage wherein the duplicated DNA chromosomes co...
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Answered by Elizabeth H. • Biology tutor
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Describe the process by which lipids are 'broken down' by the digestive system, and how bile facilitates this process.

Lipids are broken down by lipases into glycerol and fatty acids. Bile, made in the liver and stored in the gall bladder, facilitates this process by emulsifying fats into smaller droplets. This increases the...
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Answered by Poppy K. • Biology tutor
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Describe and explain the process of saltatory conduction. Diagrams may be used.

Saltatory conduction is the term used to describe the propagation (a widely and quickly spreading phenomenon) of an action potential down the axon of a myelinated neuron, from one node of ranvier to the next...
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Answered by Poppy K. • Biology tutor
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How does the polymerase chain reaction (PCR) work?

PCR is a method to isolate and amplify a specific fragment of DNA that you would like to study. The reaction is set up with template DNA, primers, DNA polymerase enzyme and free nucleotides. Primers are shor...
SA
Answered by Sunya A. • Biology tutor
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How is the structure of the lung adapted for respiratory function?

The lung can be divided into different sections regarding its function. The tube that connects the airway to the lungs is called the trachea, which is made of cartilage rings. These are flexible, and allow s...
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Answered by Rebecca I. • Biology tutor
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