Curriculum
Course: IAL Edexcel Linear
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Curriculum

IAL Edexcel Linear

Unit 1: Lifestyle, Transport, Genes and Health

0/36 Dr Dabour Hub Science Diagram and Course Material

Unit 2: Cells, Development, Biodiversity and Conservation

0/34 Dr Dabour Hub Science Diagram and Course Material

Unit 3: Practical Skills in Biology I

0/31 Dr Dabour Hub Science Diagram and Course Material

Unit 4: Energy, Environment, Microbiology and Immunity

0/34 Dr Dabour Hub Science Diagram and Course Material

Unit 5: Respiration, Internal Environment, Coordination and Gene Technology

0/42 Dr Dabour Hub Science Diagram and Course Material

Unit 6: Practical Skills in Biology II

0/51 Dr Dabour Hub Science Diagram and Course Material
Quiz

SNAB Gas Exchange, Cell Membranes & Transport – Check yourself

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SNAB Gas Exchange, Cell Membranes & Transport IAL Modular Biology check yourself quiz: free practice for IAL Edexcel Modular. Work through this SNAB Gas Exchange, Cell Membranes & Transport IAL Modular Biology check yourself quiz and get instant feedback on every answer. If you get stuck, review the 1.3 SNAB Gas Exchange, Cell Membranes & Transport — Notes — IAL Biology Notes lesson. More practice: IAL Edexcel Modular — all units. Syllabus: Pearson Edexcel International A Levels.

  • Questions count: 12
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
According to Fick's law, rate increases when:
Thickness increases
Surface area decreases
Concentration difference increases
Temperature decreases
2.
Which requires ATP?
Osmosis
Active transport
Facilitated diffusion
Simple diffusion
3.
Water moves from:
−200 kPa to −600 kPa
−600 kPa to −200 kPa
−400 kPa to 0 kPa
−500 kPa to −100 kPa
4.
Oxygen crosses membranes mainly by:
Active transport
Carrier proteins
Endocytosis
Simple diffusion through bilayer
5.
Increasing temperature in the beetroot practical:
Decreases absorbance
Increases pigment release
Has no effect
Strengthens membranes
6.
The function of surfactant is to:
Reduce surface tension in alveoli
Carry oxygen
Thicken walls
Kill bacteria
7.
Which statement best describes Diffusion?
Bulk uptake of material by the membrane enfolding it to form a vesicle.
Passive movement of molecules across a membrane via channel or carrier proteins.
A tiny air sac in the lung where gas exchange takes place.
Net movement of particles from high to low concentration, passively.
8.
Which statement best describes Facilitated diffusion?
Passive movement of molecules across a membrane via channel or carrier proteins.
Net movement of water from a higher to lower water potential across a partially permeable membrane.
A tiny air sac in the lung where gas exchange takes place.
Rate of diffusion is proportional to surface area × concentration difference ÷ thickness of the exchange surface.
9.
Which statement best describes Exocytosis?
Passive movement of molecules across a membrane via channel or carrier proteins.
A tiny air sac in the lung where gas exchange takes place.
Model of membrane structure: a phospholipid bilayer with proteins moving freely within it.
Bulk release of material by vesicles fusing with the cell surface membrane.
10.
Which statement best describes Alveolus?
Net movement of particles from high to low concentration, passively.
A tiny air sac in the lung where gas exchange takes place.
Model of membrane structure: a phospholipid bilayer with proteins moving freely within it.
Net movement of water from a higher to lower water potential across a partially permeable membrane.
11.
Cholesterol molecules in an animal cell membrane
transport glucose
act as receptors for hormones
reduce changes in fluidity when temperature changes
form channels for ions
12.
CFTR protein is a channel for:
Sodium ions
Glucose
Chloride ions
Water only
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Part of Unit 1: Lifestyle, Transport, Genes and Health — see every lesson and quiz in this unit.
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