levels of biological organisation 3
TRANSCRIPT
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shepp high sciencelevels of Biological Organisation
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Remember these cells?
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What are these cells? Write down 3 structures you can see in these cells.
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What are these cells? Write down 2 ways these
cells differ from those in the previous slide.
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Cells: Are the structural and functional units of all living organisms.
humans have some 75-100 trillion multicellular (more than one cell) unicellular (single celled)
cell membrane
mitochondriavacuole
nucleus
cytoplasm
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CHLOROPLAST NUCLEUS VACUOLE CELL WALL CELL MEMBRANE MITOCHONDRIA CYTOPLASM (OOPS ONE IS REPEATED!)
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There are many different types of cells in the human body.
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blood cells
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blood cells
sperm cells
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blood cells
sperm cells
egg cell
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blood cells
sperm cells
egg cell
neuron (nerve cell)
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blood cells
sperm cells
egg cell
neuron (nerve cell)
skin cell
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blood cells
sperm cells
egg cell
neuron (nerve cell)
skin cell
fat cell
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blood cells
sperm cells
egg cell
neuron (nerve cell)
skin cells
fat cells
pancreatic cell
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blood cells
sperm cells
egg cell
neuron (nerve cell)
skin cells
fat cells
pancreatic cells
stomach cell
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blood cells
sperm cells
egg cell
neuron (nerve cell)
skin cells
fat cells
pancreatic cells
stomach cell
gland cell
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Tissue: Many cells make a tissue. A tissue is a group of cells that perform the same function. There are 5 main tissue types:
muscle; epithelium; connective; nervous; and secretory.
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EPITHELIAL TISSUE
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EPITHELIAL TISSUE
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EPITHELIAL TISSUEsmall intestine
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EPITHELIAL TISSUE
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EPITHELIAL TISSUE
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CONNECTIVE TISSUE
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CONNECTIVE TISSUE
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CONNECTIVE TISSUE
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CONNECTIVE TISSUE
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CONNECTIVE TISSUE
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MUSCLE TISSUE
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MUSCLE TISSUE
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MUSCLE TISSUE
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MUSCLE TISSUE
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MUSCLE TISSUE
stomach
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NERVOUS TISSUE
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NERVOUS TISSUE
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NERVOUS TISSUE
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NERVOUS TISSUE
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NERVOUS TISSUE
cow’s eye
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SECRETORY TISSUE
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SECRETORY TISSUE
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SECRETORY TISSUEpancreas
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SECRETORY TISSUE
horse sweat gland
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SECRETORY TISSUE
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Organ: A group of different tissues with a specific job.
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bladder
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bladder
eye
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bladder
eye
brain
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bladder
eye
brain
stomach
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bladder
eye
brain
stomach kidney
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bladder
eye
brain
stomach kidneyheart
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bladder
eye
brain
stomach kidneyheart
intestines
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bladder
eye
brain
stomach kidneyheart
intestinesbone
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Organ System: A group of organs that work together to perform a specific job. Many systems come together to allow an organism to survive and reproduce.
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digestive
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digestive circulatory
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digestive circulatory
endocrine
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digestive circulatory
endocrine
excretory
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digestive circulatory
endocrine
excretory
muscular
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digestive circulatory
endocrine
excretory
muscularskeletal
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digestive circulatory
endocrine
excretory
muscularskeletal
nervous