Top answers

What is homeostasis and why is it important? Give an example of a body condition that must be controlled and how.

In order to remember the definition of homeostasis it is useful to memorise the mnemonic ‘MACIE’; the Maintenance of A Constant Internal Environment. Conditions in the body must be constantly controlled beca...
TA
Answered by Tierney A. • Biology tutor
125912 Views

What effect does ADH release have on the blood osmolarity?

ADH (anti diuretic hormone) is a hormone that is released when the hypothalamus detects high blood osmolarity or when blood pressure is low. It is released from the posterior pituitary gland into the blood. ...
AY
9233 Views

What is an autoimmune disease?

The immune system usually makes antibodies to destroy foreign pathogens that may harm the body. However, in autoimmune disease, the body produces antibodies that recognise the body's own cells or enzymes as ...
AY
10968 Views

What are the key ideas surrounding homeostasis?

Homeostasis is the maintenance of internal environments within a set narrow range (based around a set point) which is critical for survival. The environment remains relatively stable so reactions can occur a...
DD
Answered by Devajit D. • Biology tutor
4027 Views

Describe the different environmental factors that affect the direction of root and shoot growth

There are three main factors that affect root and shoot growth, which are light (phototropism), gravity (geotropism) and water (hydrotropism).Both roots and shoots show positive tropism whereby growth is sho...
MF
Answered by Maria F. • Biology tutor
6123 Views