Exchange of materials (Edexcel GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why do organisms need to exchange oxygen with their environment?
Why do organisms need to exchange oxygen with their environment?
For aerobic respiration
Where is urea formed in the body?
Where is urea formed in the body?
In the liver
Why don't unicellular organisms need specialised transport systems?
Why don't unicellular organisms need specialised transport systems?
They have a large SA:V ratio
Why do multicellular organisms need specialised exchange surfaces?
Why do multicellular organisms need specialised exchange surfaces?
They have a smaller SA:V ratio
What does the xylem transport in plants?
What does the xylem transport in plants?
Water and mineral ions
What does the phloem transport in plants?
What does the phloem transport in plants?
Sugars and amino acids
What is the function of villi in the small intestine?
What is the function of villi in the small intestine?
Absorb dissolved food molecules
Which feature provides a short diffusion path in exchange surfaces?
Which feature provides a short diffusion path in exchange surfaces?
Thin barriers
Which type of organism has a higher SA:V ratio?
Which type of organism has a higher SA:V ratio?
Smaller organisms
A cube has SA of and volume of . What is its SA:V ratio?
A cube has SA of and volume of . What is its SA:V ratio?
3:1