F3 Revision

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F3 Revision
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Questions

• Name
• What
• State
• With reference to

• How
• Describe
• Explain
• Suggest an explanation
• Why

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Questions

• Structural features
• Distinctive characteristics
• habitat

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Summary concept diagram
Organisms
can be identified by a tool called
show
are
biological key
diversity
classified
into
five kingdoms
except
virus
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Summary concept diagram
five kingdoms
include
prokaryotes
protoctists
fungi
plants
animals
are divided into
flowering plants
non-flowering plants
are divided into
are divided into
monocotyledonous plants
dicotyledonous plants
mosses
ferns
gymnosperms
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Summary concept diagram
animals
are divided into
vertebrates
invertebrates
are divided into
fish
amphibians
reptiles
birds
mammals
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Classification of Vertebrates
Vertebrates
B
C
A
E
D

• Slimy skins,
• no scales

• Feathers

• Scales

• Dry scales

• Hairs

• 4 limbs

• 4 limbs

• 2 limbs
• 2 wings

• 4 limbs

• Fins

• Lungs

• Lungs

• Lungs

• Gills

• Gills (Larvae)
• Lungs (Adult)

• Eggs

• Shelled-
• eggs

• Shelled-
• eggs

• Born alive

• Eggs

Cannot control their own body Temperature
Can control their own body Temperature

• mammary glands

• beaks
• Scale

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Classification of Vertebrates
Vertebrates
Mammals
Reptiles
Fish
Amphibians
Birds

• Feathers

• Scales

• Slimy skins,
• no scales

• Dry scales

• Hairs

• 4 limbs

• 4 limbs

• 2 limbs
• 2 wings

• 4 limbs

• Fins

• Lungs

• Lungs

• Lungs

• Gills

• Gills (Larvae)
• Lungs (Adult)

• Eggs

• Shelled-
• eggs

• Shelled-
• eggs

• Born alive

• Eggs

Cannot control their own body Temperature
Can control their own body Temperature

• mammary glands

• beaks

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CH3
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Summary concept diagram
Cells
transport within/ across them carried out by
have
carry out
are grouped into
metabolism
rate increased by
consists of
enzymes
catabolism
anabolism
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Summary concept diagram
enzymes
activity affected by
have an
are
active site
biological catalysts
shows
pH
temperature
specificity
extreme values cause
explained by
high causes
low causes
lock-and-key hypothesis
inactivation
denaturation
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The mechanism of enzyme actions
A
Y
X
B
Z
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The mechanism of enzyme actions
Anabolic reactions
product
shapes fit together
substrate
enzyme unchanged
enzyme-substrate complex (easily broken down)
active site
Enzyme can be reused
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Examples
Amylase Catalase
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Questions

• Result/ Describe
• Explanation/ Why
• conclusion

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? When the temperature is above the optimum,
shapes of enzyme molecules begin to change.
? Denaturation of enzyme
enzyme activity
temperature
As the temperature rises from 0C to 40 C
40 ?
? Substrate and enzyme molecules have more
kinetic energy and move more rapidly.
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Summary concept diagram
Cells
Act Book P47-49
transport within/ across them carried out by
diffusion
osmosis
active transport
rate affected by
rate affected by
make cells (animal cell/ plant cell)
takes place across
concentration gradient
difference in water potential
differentially permeable membrane
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Explain any change?

• State any change
• Explanation
• Since the water potential of (A) is higher than
  that of (B),
• So water will move from A to B through a
  differentially permeable membrane by osmosis.

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Summary concept diagram
osmosis
make cells (animal cell/ plant cell)
swell and burst/ turgid
stay the same volume
shrink/ flaccid and plasmolysed
in
in
in
isotonic solution
hypertonic solution
hypotonic solution
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Summary concept diagram
Cells
are grouped into
Act book P58 Tbook p66 Q5
tissues
and
are grouped into
organs
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are grouped into
systems
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