similar cells which work together to perfrom a particular function.
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What do blood cells begin as?
stem cells in bone marrow.
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What are erythocytes?
Red blood cells.
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What are Neutrophillis?
White blood cells which
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Where are stem cells found in plants?
Found in meristemetic tissues. New stem cells continually grow throughout plant's life.
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Where are stem cells found in humans?
Found in embryoes (Totipotent cells). Also found in a few places in adults, but these can only differntiate inot a few different cells.
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what is the function of epithelial tissue?
for linining and layers
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what is the function of connective tissue?
for holding tissues together
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what is the function of muscle tissue?
for the action of movement
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what is the function of nervous tissue?
for communication via elecrical membranes
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Give some of the ways in which a erythocyte is specialised to perform its function
many of the nomral organelles not present so that the cell can carry more haemoglobin. has bioconcave shape so that surface area is maximised- increases speed of oxygen in and out of cell.
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what do neutrophills contain?
lots of lysosomes; contain enzymes which destroy old organelles. contain lobed nucleus for greater flexibility.
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How can you tell if lysosomes are in a substance?
the cytoplasm looks granular
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Other cards in this set
Card 2
Front
Define Tissue
Back
similar cells which work together to perfrom a particular function.
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