B3 COMPLETE QUIZ!!!

I will keep adding more but heres what i've got for now!

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  • Created by: Georgina
  • Created on: 17-05-11 10:11
How does active transport differ from osmosis and diffusion?
It uses energy from respiration
1 of 15
Where do cells produce most of their energy?
Mitochondria
2 of 15
What do we mean when we say particles 'move against the concentration gradient'?
They move from an area of low to high concentration
3 of 15
Why are the surfaces of the lungs moist?
So diffusion happens quicker
4 of 15
What type of blood vessel picks up oxygen at the lungs?
Capillaries
5 of 15
What is absorbed by the blood from the small intestine?
Small soluble molecules of digested food
6 of 15
What are the tiny holes in the surface of a leaf called?
Stomata
7 of 15
State one factor that will increase the rate of transpiration.
Higher temperature
8 of 15
Why is it necessary for the small intestine to have a 'rich' blood supply?
So that the digested food can be taken away quickly and efficiently
9 of 15
Why are the surfaces of the lungs thin?
There is less distance across which diffusion has to take place
10 of 15
What structures increase the surface area of the lungs?
Air sacs/Alveoli
11 of 15
what substances do roots take up?
Water and mineral ions
12 of 15
Why are leaves very thin?
Less distance inside the leaf to aid diffusion
13 of 15
Why do humid days result in less transpiration from leaves, even if it is hot?
Air already has a lot of water vapour
14 of 15
Why do cells need to take up some substances by 'active transport'?
The substances are taken up against a concentration gradient
15 of 15

Other cards in this set

Card 2

Front

Where do cells produce most of their energy?

Back

Mitochondria

Card 3

Front

What do we mean when we say particles 'move against the concentration gradient'?

Back

Preview of the front of card 3

Card 4

Front

Why are the surfaces of the lungs moist?

Back

Preview of the front of card 4

Card 5

Front

What type of blood vessel picks up oxygen at the lungs?

Back

Preview of the front of card 5
View more cards

Comments

Lollypop

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Really Good quiz !

Georgina

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thankyou :)

ikhantReviseit

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All exchange surfaces in humans have thin walls

True
False

i didnt know it was false O-O got 88%

caitlin

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good mix well done

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