Specialised Cells
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| What is the function of the egg cell? | To be fertilized by a sperm cell and form a zygote.
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| How is egg cell adapted to its function? | Egg has a haploid number of chromosomes and a large food store to support developing embryo.
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| What is the function of the sperm cell? | To swim to the egg in order to fertilize it.
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| How is sperm cell adapted to its function? | Sperm cell has a haploid number of chromosomes and a tail allowing it to swim to the egg.
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| What is the function of the root hair cell? | To absorb MORE water needed by a plant.
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| How is root hair cell adapted to its function? | It has a large surface area allowing it to absorb water efficiently.
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| Why is there no chloroplasts in the root hair cell? | Because root hair cell is usually found underground, where there is no sun light.
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| What is the function of xylem cells? | To transport water UP the plant from the soil.
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| How are xylem cells adapted to their function? | They are dead hollow tubes strengthened by lignin.
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| What is the function of phloem cells? | To transport sugars UP and DOWN the plant from the leaves.
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| How are phloem cells adapted to their function? | They are living cells supported by companion cells. They have sieve plates at the ends.
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| What is the function of red blood cells? | To carry MORE oxygen around the body.
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| How are red blood cells adapted to their function? | They have a large surface area, biconcave shape, do not have a nucleus and contain hemoglobin.
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| What is the function of nerve cells? | To receive and pass on electrical signals.
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| How are nerve cells adapted to their function? | They have long thin dendrites and can form many connections with the other nerve cells.
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| What is a tissue? | Group of similar cells working together to perform the same function.
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| What is an organ? | A group of tissues working together to perform the same function.
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| What is an organ system? | A group of organs working together.
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| What are the levels of cell organization in a multicellular organism? | cell - tissue - organ - organ system - organism.
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| What are the unspecialised cells in animals called? | stem cells.
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| What are the unspecialised cells in plants called? | meristems.
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| Where are stem cells found in the body? | bone marrow and umbilical cord.
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| Where are meristems found in a plant? | root tip and shoot tip.
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| What is the role of unspecialised cells? | to divide and produce specialised cells.
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| What can stem cells potentially be used for? | grow new organs, cure diabetes or cancer.
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Created by:
dr.prorocic
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