B2- Organisation

Question 1

Order of size of multicellular structures

Answer 1

Cell, tissue, organ, organ system, organism

Question 2

What is a catalyst

Answer 2

A substance which increases the speed of reaction, without being changed or used up in the reaction.

Question 3

What is an enzyme

Answer 3

Enzymes are catalysts that break up large chains of chemicals into smaller blocks of chemicals

Question 4

What happens if you change the temperature or Ph of an enzyme

Answer 4

If an enzyme gets too hot its bonds will start breaking, this changes the shale of the active site.
If the ph is too high or low it will interfere with the shape of the active site.
In both cases the enzymes become denatured and stop working.