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Biology IB G11 MOCK prep
Long answer IB paper questions
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Cards (5)
Explain the advantages of having both lipids and carbohydrate as energy stores in the human body [2]
Energy homeostasis
2. Metabolic flexibility
Outline ONE reason for humans being unable to digest
cellulose
[1]
Because humans
lack
appropriate
enzymes
(
cellulase
) to
break
down
cellulose
Cellulose is the most abundant organic polymer on Earth. Describe the structure of cellulose [3]
Linear
chains
of
β-D-Glucose
2. Hydrogen
bonding
3. Polysaccharid
e
Cellulose is a
linear
,
ribbon-shaped
polymer
of
glucose
molecules
Unicellular and Multicellular organisms share the same functions of life. Outline FOUR functions of life [4]
Metabolism
2.
Growth
3.
Reproduction
4.
Response
to
Stimuli
living organisms control pH within their tissues. What is a reason for regulating pH?
All parts of a body must be kept at the same pH to survive.
2. many reactions can only happen at specific pH.
3. pH affects osmosis
4. a Control of active transport is achieved by pH.
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