Top answers


What is the importance of ADH while experiencing dehydration?

ADH, short for antiduretic hormone, is produced when the concentration of solutes in blood plasma increases - this is detected by receptors in the brain. ADH is then released into the bloodstream, where it r...
PW
Answered by Paulina W. • Biology tutor
3299 Views

Describe the changes that take place in the iris when moving into a dark room.

The iris controls the diameter of the pupil to accommodate for the level of light that needs to enter the eye. When an individual moves into a dark room, the pupil must dilate to allow more light to enter th...
PT
Answered by Pauline T. • Biology tutor
20725 Views

What are the consequences of smoking?

Smoking have bad long term and short term effects on a person's health due to the harmful substances in cigarettes. Firstly, it can causes emphysema. This is when the alveoli's bubbly-like shape is reduced, ...
NL
Answered by Nicole L. • Biology tutor
3526 Views

What is Photosynthesis and how does it occur?

Photosynthesis is a process completed by plants in order to produce food for them to survive. This process occurs in a green organelle called the chloroplast, which is found in the plant cell, mostly in the ...
CK
Answered by Chloe K. • Biology tutor
3161 Views

Describe different point mutations and how severe are they likely to be

Insertion - one nucleotide is inserted into already existing sequence. As amino acids are coded by 3 consistent nucleotides insertion changes the reading frame. Therefore, it is likely to have severe consequ...
AL
3024 Views