Top answers

What are the main stages of the cardiac cycle?

Blood enters the atria. It cannot pass into the ventricles because the atrioventricular valves are closed. The heart is in diastole.The atria contract. The pressure in the atria becomes greater than the pres...
AA
Answered by Anshul A. • Biology tutor
5459 Views

Factorise this equation and then solve for x) 2x^2 - 3x-2

Do 2x -2 = -4List these factors Choose two of those factors which equal to -3x, in this case 1 and -4 (or the other way around)Rewrite the equation as 2x 2 + x - 4x -2, then factorise this in two parts For 2...
EC
Answered by Ellen C. • Maths tutor
6281 Views

How are leaves adapted for gas exchange?

Leaves have a large surface area, which means more space to allow CO2 to enter. They are thin so there is less for gases to travel. Leaves contain Stomata; these are small holes found distributed throughout ...
AM
Answered by Anika M. • Biology tutor
44174 Views

Compare anaerobic respiration in a yeast cell with anaerobic respiration in a muscle cell.

Anaeobic respiration in yeast: glucose -> carbon dioxide + ethanol Anaerobic respiration in muscle cells: glucose -> lactic acid The lactic acid build up in muscles requires oxygen to be broken down an...
TM
Answered by Tom M. • Biology tutor
30126 Views

How do I integrate quotations into my essay without it feeling forced?

Quotations from the text(s) that you are analysing are, obviously, essential to an essay. If you have too few the essay will feel vague and unsubstantiated - too many, and the flow of the essay will come acr...
SP
Answered by Sarah P. • English tutor
2283 Views