Top answers

Name and briefly describe the function of three organelles possessed by a plant cell. State an organelle that is present in a plant cell but not in an animal cell.

Plant cells possess a membrane bound nucleus that acts as the control centre of a cell. They also possess a vacuole which controls water balance in the cell. The chloroplasts are the site of photosynthesis a...
KA
Answered by Katy A. • Biology tutor
4141 Views

How do antibodies work?

Foreign cells that enter the body have antigens on the outside of them which will be complementary to a specific antibody. The antibody can bind to the antigen, forming an antigen-antibody complex, and this ...
LB
Answered by LORNA B. • Biology tutor
8313 Views

Can you explain to me the difference between diffusion, osmosis and active transport?

The key thing here is to note that both diffusion and osmosis are passive processes, and active transport is an active process. A passive process is one which does not require any energy in order to occur, a...
LR
Answered by Lizzie R. • Biology tutor
29876 Views

Explain the process of evolution

Individuals within a population show a wide range of variation due to differences in their genes. The individuals within these species/populations with the characteristics most suited to their environment su...
SA
Answered by Seyi A. • Biology tutor
3129 Views

What is an enzyme?

An enzyme is a biological catalyst. It is a protein with an active site that binds to a substrate to accelerate a chemical reaction.
ET
Answered by Epen T. • Biology tutor
3622 Views