Edexcel AS Level Biology

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ClickBiology
Cambridge IGCSE BiologyExtended Level
Cells
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You should be able to

• Identify and describe the structure of plant
  cells and animal cells, and describe the
  functions of their parts.
• Describe the difference between animal cells and
  plant cells.
• Explain the structure and function of specialised
  cells red blood cell, muscle cells, ciliated
  cells, xylem vessels and root hair cells.
• Define the terms tissue, organ and organ systems,
  with examples.

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You should be able to

• Identify and describe the structure of plant
  cells and animal cells, and describe the
  functions of their parts.
• Describe the difference between animal cells and
  plant cells.
• Explain the structure and function of specialised
  cells red blood cell, muscle cells, ciliated
  cells, xylem vessels and root hair cells.
• Define the terms tissue, organ and organ systems,
  with examples.

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Comparing animal and plant cells
Found in both animal and plant cells Found only in plant cells
cell membrane cellulose cell wall
nucleus large sap vacuole
cytoplasm chloroplast
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You should be able to

• Identify and describe the structure of plant
  cells and animal cells, and describe the
  functions of their parts.
• Describe the difference between animal cells and
  plant cells.
• Explain the structure and function of specialised
  cells red blood cell, muscle cells, ciliated
  cells, xylem vessels and root hair cells.
• Define the terms tissue, organ and organ systems,
  with examples.

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Root hair cells absorb minerals and water from
the soil
Cross-section of a root hair cell
cell membrane
semi-permeable, so will allow water and mineral
ions into the cell
cytoplasm
contains no chloroplasts as no photosynthesis is
needed
root hair
increases surface area for absorption of water
and mineral ions
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You should be able to

• Identify and describe the structure of plant
  cells and animal cells, and describe the
  functions of their parts.
• Describe the difference between animal cells and
  plant cells.
• Explain the structure and function of specialised
  cells red blood cell, muscle cells, ciliated
  cells, xylem vessels and root hair cells.
• Define the terms tissue, organ and organ systems,
  with examples.

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An organ is a structure made of a group of
tissues working together to perform specific
functions
heart
liver
lungs
stomach
kidneys
brain
Plant organs include the stem and the leaves
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Now you should be able to

• Identify and describe the structure of plant
  cells and animal cells, and describe the
  functions of their parts.
• Describe the difference between animal cells and
  plant cells.
• Explain the structure and function of specialised
  cells red blood cell, muscle cells, ciliated
  cells, xylem vessels and root hair cells.
• Define the terms tissue, organ and organ systems,
  with examples.

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Now write down everything you remember from the
presentation

• Dont refer to your text book straight away, see
  what information you have retained.
• Check the notes you have made by checking your
  book.

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Edexcel AS Level Biology
ClickBiology
Next video Transport into and out of the
cell (diffusion, osmosis and active transport)