Top answers

Biology
All levels

How is blood glucose concentration regulated?

It's important that glucose levels in the blood are kept at a constant, as glucose is a key component for cell respiration. The mechanisms for glucose regulation involve the hormones insulin and glucagon....

ML
Answered by Megan L. Biology tutor
3373 Views

How can a DNA mutation be neutral?

The effects of a mutation can be limited at several stages of gene expression. 1) Transcription: If the mutation is in a non-coding region, this is not transcribed into mRNA and so there is no change to t...

VR
Answered by Vi R. Biology tutor
2976 Views

What is the structure of DNA?

DNA stands for deoxyribonucleic acid. And what is DNA? Well, it’s basically a carrier of genetic information. DNA is found in all cells, and it contains the information needed for cells to live, to grow a...

MS
Answered by Molly S. Biology tutor
9462 Views

What is an enzyme? and why are they so important for reactions to take place?

An enzyme is a type of protein which we call a biological catalyst. In biology, a catalyst is a chemical which helps speed up reactions without being used up itself. Therefore, if you add 2ml of an enzyme...

LP
Answered by Laura P. Biology tutor
3792 Views

Give 2 features of DNA and explain how each one is important is semi-conservative replication?

Semi-conservative replication would produce 2 copies that each contained one of the original strands and one new strand.  1- Weak hydrogen bonds between bases allow two strands to unzip2- 2 strands exists...

FK
Answered by Fady K. Biology tutor
20089 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