Top answers

Biology
A Level

How does an invading pathogen cause disease?

There are three main ways that an invading pathogen can result in disease:

 

Damage or destroy host cells

This is host specific and ligands on the pathogen mus...

JC
Answered by Jenny C. • Biology tutor
4683 Views

How are blood glucose levels controlled in the body?

Blood glucose is controlled by a negative feedback mechanism. 

When blood glucose levels rise, this is detected by beta cells in the Islets of Langerhans in the pancreas. In response, the...

EK
Answered by Emily K. • Biology tutor
4559 Views

How does information from a gene make a protein?

A gene is defined as a section of DNA that codes for a protein. Within a gene you have triplets which are 3 bases in a row that code for a specific amino acid

GM
Answered by Georgina M. • Biology tutor
4677 Views

What is the second line of defence?

What is the second line of defence?

Before we start let’s re-cap some key terminology:

-pathogen: a microorganism causing disease or illness to its host

<...
TO
Answered by Tumbi O. • Biology tutor
12674 Views

During the light-independent reaction of photosynthesis, carbon dioxide is converted into organic substances. Describe how

As suggested by the name, the light-independent reaction occurs without the precence of light. To start, carbon dioxide combines with ribulose bisphosphate (RuBP) to produce two molecules of glycerate...

BJ
Answered by Bryony J. • Biology tutor
16802 Views

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