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Transcript
Cells
Learning objectives:
To know: the functions of the different
parts of a cell;
the differences between animal and
plant cells;
the chemical reactions within cells.
Animal cell
Ribosomes
Cell Membrane
Mitochondria
Cytoplasm
Nucleus
Draw the diagram of
an animal cell, think
about where the
labels might point to
Ribosomes
Cell Membrane
Mitochondria
Cytoplasm
Nucleus
Draw the diagram of an plant
cell, think about where the
labels might point to
Permanent
vacuole
Cell
membrane
Cellulose cell wall
Nucleus
Chloroplasts
Mitochondria
Ribosomes
Cytoplasm
Permanent
vacuole
Cell
membrane
Cellulose cell wall
Nucleus
Chloroplasts
Mitochondria
Ribosomes
Cytoplasm
Animal Cells
Add these notes to your labels on the cell diagrams
Nucleus, which controls all the activities of the cell, also contains the
instructions for making new cells or new organisms.
Cytoplasm, a liquid gel in which most of the chemical reactions
needed for life takes place. One of the most important of these is
respiration, where oxygen and sugar react to release energy the cell
needs.
Cell membrane controls the passage of substances in and out of the
cell.
Mitochondria are structures in the cytoplasm where most of the
energy is released during respiration.
Ribosomes are where protein synthesis takes place. All the proteins
needed in the cell are made here.
Plant Cells
Add these notes to your labels on the cell diagrams
All plant cells have the structures in an animal cell and:
Cell wall made of cellulose which strengthens the cell and
gives it support. Many, but not all, plant cells also have:
Chloroplasts, found in all the green parts of the plant.
They are green because they contain chlorophyll. They
absorb light energy to make food by photosynthesis.
Permanent vacuole is a space in the cytoplasm filled with
cell sap, which is important for keeping the cells rigid to
support the plant.
Chemical reactions that take place in cells are controlled by
enzymes. Each enzyme, which are proteins, typically control
one specific reaction.
Enzymes that control different functions are found in
different structures of a cell.
Mitochondria formed enzymes control respiration.
Chloroplasts form enzymes which control photosynthesis.
Protein synthesis enzymes are found on the surface of
ribosomes.