Top answers

What is the difference between arteries, veins and capillaries?

Arteries, veins and capillaries are all types of blood vessels. The best way to think about their differences are the roles they play in circulation. So, if we take the systemic circulation as an example (th...
EH
Answered by Elizabeth H. • Biology tutor
76573 Views

How do you form the conditional tense?

The conditional tense in French is conjugated in the same manner as the perfect, imperfect and future tense; that is by taking the stem of the verb and then adding the appropriate endings. The conditional te...
NK
Answered by Niamh K. • French tutor
3209 Views

Which three things are present in plant and agal cells but not in animal cells? (3)

Cell wall Chloroplasts A permanent vacuole This is a common question. I like to remember it as CVC - Cats Vs Cucumbers - like all the YouTube videos of cats being scared by cucumbers.
CR
Answered by Chris R. • Biology tutor
3678 Views

How could you increase the rate of a chemical reaction?

The collision theory states that when two or more particles have sufficient energy and orientation, the collision will be successful in producing a reaction. There are many ways to increase the rate of a che...
JZ
Answered by Julia Z. • Chemistry tutor
2962 Views

Give an example of a negative feedback mechanism in the human body.

When the hypothalamus in the brain detects that the blood is getting too concentrated (not enough water), it stimulates the pituitary gland to release an anti-diuretic hormone (ADH). When it reaches the kidn...
PM
Answered by Paul M. • Biology tutor
8001 Views