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What are the roles of the parasympathetic and sympathetic nervous systems?

The sympathetic nervous system and parasympathetic nervous systems are both part of the autonomic nervous system. They work together to achieve homeostasis. The sympathetic nervous system primarily activates...
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Answered by Ursula B. • Biology tutor
3795 Views

Give three differences between the structures of RNA and DNA

DNA has a double helix structure, RNA is usually single-stranded DNA is stable, RNA is very unstable DNA is longer, RNA is generally shorter DNA contains Thymine, RNA contains Uracil DNA contains a deoxyribo...
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Answered by Shannon M. • Biology tutor
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Can you explain the difference between type I and type II diabetes?

Both types of diabetes are based around the hormone insulin. Insulin is produced by the pancreas when we have elevated levels of glucose in the blood, for example after eating a meal. Insulin binds to recept...
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Answered by Amy K. • Biology tutor
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Describe the reactions involved in the light-independent reaction (LIR)

The LIR is made up of three stages, known as the Calvin cycle. The first stage is carbon fixation. To start, the enzyme RuBISCO (Ribulose Bisphosphate Carboxylase Oxygenase) catalyses the reaction between th...
JC
Answered by Josephine C. • Biology tutor
6290 Views

What happens at neuromuscular junctions?

A wave of depolarisation is sent toward the neuromuscular junction, this causes voltage gates Ca2+ channels in the presynaptic membrane to open allowing the Ca2+ ions to enter following their concentration g...
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Answered by Max W. • Biology tutor
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