Top answers

Why do bacteria become resistant to antibiotics?

Antiobiotics kill bacteria but bacteria can become resistant to antibiotics. This happens through a process called natural selection. Within a group/population of bacteria they will all have small difference...
LG
Answered by Lysander G. • Biology tutor
5180 Views

What cell part is always present in plant cells but never in animal cells?

Cell wall
CW
Answered by Catherine W. • Biology tutor
3675 Views

Give the name, the function and one adaptation of a specialized cell of your choice.

Examples 1. Epithelial cells clear airways and have cilia which beat back and forth to move bacteria. 2. Red blood cells carry oxygen and have no nucleus so they have a larger surface area in which to carry ...
CW
Answered by Catherine W. • Biology tutor
4030 Views

What are the structural and functional differences between arteries and veins?

Structural Differences 1. Arteries have a much thicker wall to withstand the high pressure of blood flowing in them, whereas veins have a thinner wall so that they can be pressed flat against adjacent muscle...
IC
Answered by Iro C. • Biology tutor
71724 Views

What is evolution?

Mutations in individuals leads to variation in a population of a species. Some individuals have characteristics that makes them better suited to their environments , so they are more likely to survive and re...
AL
Answered by Ann L. • Biology tutor
4616 Views