Diffusion in Multicellular Organisms (AQA 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 is diffusion alone insufficient in large multicellular organisms?
Why is diffusion alone insufficient in large multicellular organisms?
It is slow and inefficient over long distances
What happens to surface area to volume ratio as organisms grow larger?
What happens to surface area to volume ratio as organisms grow larger?
Volume increases more rapidly than surface area
Which structures are specialised to maximise diffusion efficiency in multicellular organisms?
Which structures are specialised to maximise diffusion efficiency in multicellular organisms?
Lungs, gills, and intestines
How do thin membranes enhance diffusion in exchange surfaces?
How do thin membranes enhance diffusion in exchange surfaces?
They reduce the distance for diffusion
During gas exchange in the lungs, where does oxygen diffuse from and to?
During gas exchange in the lungs, where does oxygen diffuse from and to?
From alveoli into the blood
Where does carbon dioxide diffuse to during gas exchange in the lungs?
Where does carbon dioxide diffuse to during gas exchange in the lungs?
From the blood into the alveoli
What is the function of villi and microvilli in the small intestine?
What is the function of villi and microvilli in the small intestine?
Increase surface area for nutrient diffusion
Which waste product is removed from the blood by diffusion in the kidneys?
Which waste product is removed from the blood by diffusion in the kidneys?
Urea
What substances does the circulatory system transport to and from cells?
What substances does the circulatory system transport to and from cells?
Oxygen, nutrients, and waste products
To which fundamental cellular processes is diffusion integral?
To which fundamental cellular processes is diffusion integral?
Respiration, nutrient uptake, and waste removal