Biology Grade 8 Question Preview (ID: 42715)


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Plants use energy from sunlight to make their own food through the process
a) Photography
b) Photosynthesis
c) Evaporation
d) None

The energy stored in food is an example of
a) Potential engergy
b) Too much energy
c) Generated energy
d) None

What is potential energy
a) none
b) Energy that is stored in a system
c) Stored energy for a later stage
d) Replaced energy

What do plants and animals need the energy stored in food for
a) Life processes
b) like growth and movement
c) All
d) None

Does the food need to be broken down
a) False
b) True
c) No
d) Maybe

How does the energy get released
a) Food must be broken down into simpler substances
b) Which is called respiration
c) All
d) None

What does respiration involve?
a) A series of chemical reactions
b) A series of movements
c) Rain
d) none

What is the word equation for respiration process
a) C12H0+t0
b) C6H12O6+6O2--------- 6CO2 + 6H2O+ATP
c) None
d) All

What does the word equation show during respiration
a) Glucose and Oxygen react to form carbon dixoide
b) And water that energy is released
c) The first 2
d) None

What is this energy
a) Oxygen released for humans
b) Carbon dioxide for animals
c) The potential energy that was stored in the glucose
d) Stored energy

How to test for a product of respiration
a) 1 can be to test the by-products of the process
b) namely carbon dioxide
c) All
d) None

What happens to humans?
a) We release air
b) The carbon dioxide dissolves in our blood
c) We breathe in oxygen
d) None

In our lungs
a) Oxygen from inhaled air replaces
b) Carbon dioxide in the blood
c) All
d) None

Carbon dioxide moves
a) Into the air
b) And is exhaled
c) All
d) None

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