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Biology
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In a circuit with a 12V battery, 20Ω resistor and 10Ω resistor, all in series, calculate the current that would flow?

This question can be split into two parts, the first is calculating overall resistance: in series the Rtotal = R1 + R2 so here Rtotal = 10Ω + 20Ω = 30Ω The seco...

LA
Answered by Lauren A. • Biology tutor
4544 Views

Identify the differences between motor and sensory neurons in terms of features and function.

Motor neurons have a cell body, short dendrites and a long axon. Their function is to conduct impulses to an effector (muscle or gland).Sensory neurons, on the other hand, have a cell body, long dendrites...

MM
Answered by Michelle M. • Biology tutor
26016 Views

Humans need to remove (excrete) waste products from the bloodstream. Describe the processes that produce waste products and how the products are removed from the body. (6 marks)

Urea is produced via the breakdown of amino acids in the liver, which is removed from the blood by the kidneys and excreted in urine. Carbon dioxide

KJ
Answered by Kizzy J. • Biology tutor
21194 Views

With the aid of a diagram describe the events occurring in the neurone leading to the establishment of an action potential

Voltage-gated Na+ channels and Voltage-gated K+ channels are closed at rest, Once a stimulus is applied, the neurotransmitters activate chemically-gated (CG) channels within the cell...

OY
Answered by Olga Y. • Biology tutor
3224 Views

An individual is seated in a darkened room. What would you expect their pupils to look like? A light is shone onto their eyes and a change in their pupils is noted, what change would you expect and why?

In dark/dim conditions the human pupil dilates (diameter increases) to allow more light in.In bright conditions the pupil constricts (diameter decreases) and less light enters the eye.This is through a co...

TB
Answered by Tom B. • Biology tutor
2328 Views

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