Top answers

Explain active transport

The movement of substances against a concentration gradient, requires energyUse diagram
KP
Answered by Kitty P. • Biology tutor
3036 Views

what is the difference between aerobic respiration and aerobic respiration

Aerobic respiration= glucose + oxygen --> carbon dioxide, water and ATP energy (higher yield than anaerobic)* this process happens in the cytoplasm and mitochondrion* the stages of it includes glycolysis,...
TT
Answered by Thanika T. • Biology tutor
3116 Views

Doctors are now prescribing fewer antibiotics to reduce the evolution of antibiotic resistant bacteria. Describe the process of evolution of antibiotic bacteria. [6 marks]

There is variation in a population. Some bacteria are have resistance, others do not.Bacteria with advantegeous characteristics are more likely to survive and reproduce (when antibiotics is used in the host ...
KP
Answered by Kitty P. • Biology tutor
4799 Views

Amylase is the enzyme that controls the breakdown of starch to glucose. Describe how the student could investigate the effect of pH on the breakdown of starch by amylase.

Breakdown answer into 5 simple marks that can be easily understood and remembered:Control variable - Keep amount of amylase and starch the sameDependent Variables - change PH levels 3 times Keep temperature ...
KP
Answered by Kitty P. • Biology tutor
12742 Views

If a gene mutation is associated with the development of Alzheimer's Disease (e.g. E280A), how might a high frequency develop in a population and why wouldn't natural selection decrease it?

A high frequency of mutation can be produced by having a small population, leading to high levels of inbreeding. When there is little interbreeding with different populations, the genetic diversity will rema...
CR
Answered by Caitlin R. • Biology tutor
2997 Views