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What factors affect photosynthesis and why?

Temperature - the light-independent reaction is temperature sensitive due to being enzymed controlled CO2 - Is needed as a source of carbon Light intensity- Needed to 'excite' the chlorophyll (allow their el...
MO
Answered by Millie O. • Biology tutor
3026 Views

Explain why an enzyme like maltase is specific to the breakdown of maltose.

With A-level biology it is just as important to know how to answer the question and what the examiners are looking for as it is to have the knowledge to do so. There are common questions that examiners ask e...
JJ
Answered by James J. • Biology tutor
7701 Views

What's the difference between meiosis and mitosis?

They are both cell divisions but there are major differences betwenn them. First of all, meiosis only happens in sex cells (egg cells in women and sperm cells in men) and is a reduction diviosion, i.e. the a...
MT
Answered by Magdalena T. • Biology tutor
4834 Views

Outline how nerve impulses are transmitted along a nerve fibre.

1. Sodium (voltage-gated) channels open and Na + diffuse into neuron (down concentration gradient). 2. Inside of neuron becomes positive compared to the outside, so potential is reversed = depolarization. 3....
PW
Answered by Paulina W. • Biology tutor
12675 Views

Explain the process of inhalation

Inhalation is the process of breathing air into the lungs through the nose and mouth. This causes an increase in the volume of air in the lungs, meaning the pressure will decrease. This is acheived using 3 s...
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Answered by Florence Z. • Biology tutor
43674 Views