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1 - Draw and label a diagram of the ultrastructure of a liver cell as an example of an
animal cell
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2 - Annotate the diagram from 2
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1 with the functions of each named structure
Nucleus - Contains the DNA of the cell, with pores in the nuclear membrane to allow
movement of mRNA
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Rough endoplasmic reticulum - Ribosomes sit on the surface, synthesising proteins for use
outside the cell
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Ribosomes - The free-floating ribosomes synthesise proteins that are used within the cell
Cell membrane - A lipid bilayer that acts as a protective barrier for the cell
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Cytoplasm - Where the chemical reactions of life, including respiration, occur
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Lysosomes - Membrane-bound vesicles that contain enzymes for intracellular digestion
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Vacuoles - Store water to increase cell turgor
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3
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3
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smaller vacuoles
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org
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6 - Outline two roles of extracellular components
Cell Wall - This is found around all plant cells, and is composed of cellulose
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It also prevents the excessive uptake of
water
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It sits between
cells, and can perform many additional functions such as support, adhesion, filtering, as well
as a basis for the formation of tissue
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