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Quick Quiz on Diffusion

Quiz by Rosmawati Alwi

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Q 1/7
Score 0
What increases the surface area-to-volume ratio in the small intestine?
29
Folds in epithelial cell membranes
Concentration gradient
Random movement
Absorption of nutrients

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7 questions

Show answers

Q1
What increases the surface area-to-volume ratio in the small intestine?
Folds in epithelial cell membranes
Concentration gradient
Random movement
Absorption of nutrients
30s
Q2
What can increase the rate of diffusion?
Low concentration gradient
Diffusion distance
Random movement
Steep concentration gradient
30s
Q3
What is diffusion distance?
Distance through which a substance has to pass through
Surface area-to-volume ratio
Concentration gradient
Random movement
30s
Q4
How is diffusion distance kept short in living organisms?
Random movement
Large surface area
High concentration gradient
One-cell thick area for exchange of substances
30s
Q5
Where does gaseous exchange occur in lungs?
Epithelial cells
Lung tissues
Air spaces
Red blood cells
30s
Q6
Where does gaseous exchange occur in plants?
Leaf stomata
Epithelial cells
Root hair cell
Stem cells
30s
Q7
What substance diffuses down a concentration gradient in the lungs?
Carbon dioxide
Oxygen
Nitrogen
Water vapor
30s

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