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Biology
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Explain the difference between a receptor and an effector using examples.

Receptors  have the abilty to detect a stimuli which include changes in surroundings such as pressure on the skin. This stimuli is then converted into an impulse.  Examples of receptors include the retina...

MS
Answered by Mohini S. • Biology tutor
15162 Views

How is an action potential generated?

Firstly the resting membrane is set by Na+/K+ ATPase so that 3 Na+ moves out for every 2K+ that moves in; this creates a negative membrane potential of around -65mV. To initiate an action potential the me...

KB
Answered by Kate B. • Biology tutor
4170 Views

How does the body respond to decreasing blood glucose?

Blood glucose levels start to fall in the blood. Blood flowing through the pancreas is low in glucose, and this is sensed by cells in the pancreatic tissue. In response, it produces glucagon, (

EG
Answered by Eleanor G. • Biology tutor
3161 Views

What happens during mitosis

Mitosis is the seperation of DNA. There are 4 stages of mitosis that you need to be aware of for A level Biology: Prophase, Metahase, Anaphase and Telophase. (I like to remember this order as P.Mat)

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RW
Answered by Ruth W. • Biology tutor
2700 Views

A cell in the basal layer of the skin contains 46 chromosomes and divides by mitosis to produce new skin cells. After ten successive divisions, how many chromosomes will the basal cell have?

46 chromosomes - all cells which undergo mitosis should maintain chromosome number

FT
Answered by Fraser T. • Biology tutor
11810 Views

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