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Explain antibiotic resistance in bacteria and its evolution.

Antibiotics are used as medicine to treat bacterial diseases. Bacterial diseases are the result of populations of bacteria, and bacteria within these populations are not all equally susceptible to antibiotic...
Answered by • Biology tutor
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What's the difference between facilitated diffusion and active transport?

I can see why you could get these two mixed up as both are movements of molecules which require a transport protein. There are, however, key differences between the two.Facilitated diffusion(FD) is a passive...
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Answered by Fazna R. • Biology tutor
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Describe the reflex arc in response to the hand touching a burning hot stove. Include the names and a description of location and function of all neurons involved. Bullet points are sufficient.

All bold text gives marking points Stimulus (burning hot stove) Receptor (thermoreceptor in skin) detects stimulus Sensory neurone - relays sensory information in the form of electrical impulses from recepto...
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Answered by Jonathan V. • Biology tutor
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Explain how the structure of an egg cell is related to its function.

The egg cell is a specialised germ cell which has a haploid number of chromosomes in order to allow restoration of diploid number (46) at the time of fertilisation.The egg cell contains lipid droplets to pro...
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Answered by NESRIN G. • Biology tutor
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In terms of pressure and volume, explain the changes that take place in the chest to allow ventilation to occur.

Think through inhalation and exhalation separately and the events step-wise. Be aware of the movements of your own chest when breathing in and out. Inhalation (breathing in):The external intercostal muscles ...
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Answered by Alice H. • Biology tutor
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