Multicellular Organisms Need Transport Systems Flashcards
1
Q
What do cells in all living organisms need?
A
A variety of substances to live
2
Q
What do plant cells need to live?
A
Things like water, minerals and sugar
3
Q
What do plant cells need to get rid off?
A
Waste substances
4
Q
In unicellular organisms what do these substances do?
A
Diffuse directly into and out of the cell across the membrane
5
Q
Why is the diffusion rate quick?
A
Because of the short distances substances ahem to travel
6
Q
Why is the direct diffusion in multicellular organisms too slow?
A
Substances would have to travel large distances to reach every single cell
7
Q
Why do multicellular organisms need transport systems?
A
To move substances to and from individual cells quickly
