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What is the smallest living unit? And how is it organised?

The smallest living unit is the CELL and is organised in different ways according to its function. Although they are a bit different, there are some common features. For the animal cell, these are: a nucleus...
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Answered by Sara M. • Science tutor
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Why do ionic compounds have high melting and boiling points?

This is because of the strong attractive electrostatic forces holding the oppositely charged ions together and a large number of ionic bonds in the crystal lattice. These require a lot of thermal energy to o...
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Answered by David T. • Science tutor
79996 Views

Describe how signals travel through a neuron

Input via dendrites, nucleus, axiom (action potential : sodium, potassium), axiom terminals, synaptic cleft (repeat)
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Answered by Merle V. • Science tutor
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How do I answer a six mark question?

So, six mark questions are notorious for being anxiety inducing but they aren't as scary as they seem. What we as a pair have to do is simply sit down together and go through all the possible six mark questi...
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Answered by Samriddhi S. • Science tutor
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A person touches a hot pan by accident and their hand automatically moves away. What type of response is this? Describe how the structures involved cause the response. (5 marks)

Reflex action/reflex arc/reflex (allow "involuntary") The stimulus (heat) is detected by temperature receptors in the skin. This causes impulses to travel along a sensory neurone to the spinal cord...
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Answered by Ariel R. • Science tutor
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