Top answers

Biology
A Level

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 'excit...

MO
Answered by Millie O. Biology tutor
2750 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...

JJ
Answered by James J. Biology tutor
7280 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....

MT
Answered by Magdalena T. Biology tutor
4493 Views

What are the three isolation barriers by which speciation can occur?

Speciation is a complex topic, and indeed what defines a species is still debated today. However, one factor is key to the process of speciation; gene flow. Gene flow between populations of a species e...

JM
Answered by John M. Biology tutor
19594 Views

Outline how cystic fibrosis leads to recurrent lung infecions

   Cystic Fibrosis is a genetic condition that results from defective chloride ion channels. Normally a protein known as the “Cystic Fibrosis Transmembrane conductance Regulator” (CFTR) transports chlo...

VN
Answered by Vinayak N. Biology tutor
6219 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning