Top answers

Biology
GCSE

What is a pathogen?

-it is a disease-causing microorganism -it is known to be infectious -examples: bacteria, fungi, viruses

MF
Answered by Maria F. Biology tutor
3035 Views

Chaacteristics of living things

Living things differ from non-living things based on certain characteristics. There are 7 characteristics that identify living things and these can be remembered with the acronym MRS GREN.

<...

BU
Answered by Bubaraye U. Biology tutor
2685 Views

Can you name and describe the four levels of protein structure?

Primary structure - This is the sequence of the amino acids on the polypeptide chain. The amino acids are held together with covalent bonds. When mutations occur, they effect the prima...

FL
Answered by Francine L. Biology tutor
4779 Views

What is a gene and why is it relevant?

A gene is a part of a chromosome. The gene codes for a protein that expresses a specific characteristic.Genes code for our physical characterisics. It is a set of instructions to code for a protein which ...

CC
Answered by Charlotte C. Biology tutor
3753 Views

Describe two ways in which a pathogen (disease-causing organism) can cause disease?

There are several ways in which a pathogen can cause disease. These can be seen in the Germ Theory of disease, made famous by Robert Koch.

These include releasing toxins (1) and damaging/...

PM
Answered by Paul M. Biology tutor
28376 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