Top answers

How is the structure of the lung adapted for respiratory function?

The lung can be divided into different sections regarding its function. The tube that connects the airway to the lungs is called the trachea, which is made of cartilage rings. These are flexible, and allow s...
RI
Answered by Rebecca I. • Biology tutor
19383 Views

Explain the processes involved in eutrophication

Eutrophication is where a surplus of nutrients in a lake or pond leads to an overgrowth of plant life, causing a shift in the biodiversity. There are 5 steps to this process: Step 1: The use of fertilisers o...
RW
Answered by Rebecca W. • Biology tutor
9002 Views

Describe the structure of proteins.

Proteins are macromolecules found within living organisms that have an array of crucial functions, including catalysing enzymatic reactions and providing structural stability to cells. At the basic level, al...
AC
Answered by Abbie C. • Biology tutor
3269 Views

Messenger RNA (mRNA) is used during translation to form polypeptides. Describe how mRNA is produced in the nucleus of a cell.

This is a "Describe" question worth 6 marks, so you should aim to write a minimum of 6 points in your answer to get the full 6 marks. Messenger RNA is produced in the nucleus of a cell by transcrip...
RV
Answered by Rebecca V. • Biology tutor
18776 Views

The genotypes of 2 guinea pigs, for 2 traits are represented as AABB and aabb. The guinea pigs are mated and the offspring eventually mate with eachother. Of the second generation, what genotypes would be phenotypically different from the originals?

To work through the question, we need to remember that there are 2 traits or characteristics we are looking at for the guinea pigs - A/a and B/b. We need to work out the different ways the alleles can pair f...
RG
Answered by Rosie G. • Biology tutor
5811 Views