CIE A Level Biology复习笔记1.2.2 Animal & Plant Cells

Electron Micrographs: Animal Cells

Animal-Cell-micrograph-2

TEM electron micrograph of an animal cell showing key features

Exam Tip

You should be able to describe and interpret photomicrographs, electron micrographs and drawings of typical animal cells.

Electron Micrographs: Plant Cells

Plant-Cell-Micrograph-2

TEM electron micrograph of a plant cell showing key features

Structure of Animal & Plant Cells

  • The only structures found in animal cells but not plant cells are the centrioles and microvilli
  • Plant cells also have additional structures: the cellulose cell wall, large permanent vacuoles and chloroplasts

Animal-cell

The ultrastructure of an animal cell shows a densely packed cell – the ER and RER and ribosomes form extensive networks throughout the cell in reality

Plant-cell

Plant cells have a larger, more regular structure in comparison to animal cells

 

 

 

 

 

 

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