Top answers

Biology
All levels

I feel like I understand the concept, why I am I still not getting full marks on the question?

Understanding concepts in exams is only part of the battle. To improve your marks you need to improve your exam technique!

For example: Have you correctly interpreted what the question is asking of...

TR
Answered by Tom R. Biology tutor
3181 Views

Explain pieces of evidence that support the theory that mitochondria evolved from bacteria?

Mitochondria are one of the three eukaryotic organelles that have a double membrane (along with chloroplasts and the nucleus), two of which are believed to have evolved from bacteria (mitochondria from Pr...

AL
Answered by Angus L. Biology tutor
15111 Views

What factors affect the rate of conduction of an action potential (AP) down a neurone?

  1. MYELINATION 

A lipid myelin sheath is wrapped around the axon of the neurone in SEGMENTS. Only the parts of the axon exposed contain Na/K channels that will participate in the conducti...

FA
Answered by Fahad A. Biology tutor
4509 Views

Outline what happens to chromosomes during the mitotic cell cycle.

In the mitotic cell cycle, during the synthesis stage of interphase the DNA is replicated in each chromosome histone protein. In the first stage of mitosis, prophase, the chromosomes become visible due to...

ID
Answered by Ines D. Biology tutor
18007 Views

What factors affect rate of photosynthesis in a plant?

There are three key factors affecting rate of photosynthesis at GCSE level. They are light intensity, CO2 concentration, and temperature. These factors are best visualised by drawing graphs with rate of p...

KF
Answered by Kieran F. Biology tutor
6672 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:

© 2025 by IXL Learning