Multicellular Organisms - Absorbing Materials
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each of the black spaces below before clicking
on it to display the answer.
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| What is the name for the finger-like projections in the small intestine? | Villi
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| What is the function of the villi? | Absorb nutrients from food
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| Why is the small intestine good at absorbing food? | Large number of villi providing a large surface area.
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| Give three features of the villi that allow them to easily absorb nutrients | Large surface area, thin walls, good blood supply.
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| Which part of the villi absorbs fatty acids and glycerol? | Lacteal
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| Which component of the villi absorbs glucose and amino acids? | Blood capillary
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| What does the blood capillary absorb? | Glucose and amino acids
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| What does the lacteal absorb? | Fatty acids and glycerol
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| What are the main gas exchange organs? | The lungs
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| What do the lungs contain that provide them with a large surface area? | A large number of alveoli
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| What are the 3 features of alveoli that allow gas exchange? | Large surface area, good blood supply, thin walls
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| Give one feature of tissues which allows them to exchange materials with cells? | They have capillary networks.
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| Which two substances must be absorbed into the bloodstream to be delivered to cells? | Oxygen and nutrients from food.
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| Which waste product must be removed from the cells into the bloodstream? | Carbon dioxide
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