Top answers

Biology
A Level

Explain the process of transcription in living cells

Transcription factors together with enzymes such as DNA topoisomerase and DNA helicase reach the gene of interest. These enzymes uncoil the DNA and revelea the two strands of DNA that are wrapped around h...

TD
3189 Views

What is ATP? Explain its structure, synthesis and function.

ATP, which stands for adenosine triphosphate, is a biomolecule formed by a purine base (adenine), a sugar molecule (ribose) and three phosphate groups. Its main function is to store energy within the cell...

AR
Answered by Alba R. Biology tutor
37790 Views

What types of infectious agents are there?

Bacteria (prokaryotes) 1-5 micrometers, contain RNA and DNA, can synthesise and metabolise protein, generally free livingMajority are harmless, but a certain small list can cause infectious diseasesOne of...

AT
Answered by Adam T. Biology tutor
2738 Views

Albumin (a globular protein) is a solute found in blood plasma. In liver disease, people cannot produce sufficient amounts of albumin. Describe and explain how this change would affect red blood cells.

The solute potential of the blood plasma would be less negative or higher. Higher solute potential = higher water potential. 

Water moves via osmosis from areas of high water potential to low water...

CD
Answered by Caolan D. Biology tutor
9714 Views

Explain how a change in a sequence of DNA bases could result in a non-functional enzyme

A mutation in the DNA sequence may lead to a different amino acid sequence may lead to a different amino acid being produced in the primary protein structure of the enzyme during translation. This may cau...

YA
Answered by Yusuf A. Biology tutor
21460 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