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AQA AS BIOLOGY PAPER 2 UPDATED
EXAM WITH VERIFIED SOLUTIONS.
What is microvilli? - correct answer -Small projections that
increase surfaces area for absorption and diffusion. Many
mitchondria release atp for active transport
Illeum question - correct answer -41,0.32(micro surface area.321
cell surface area
What is role and properties of water? - correct answer -acts as a
habitat for organisms,make up cytoplasm,tissue fluid,blood,xylem
and phloem.dipolar. Partially positive hydrogen partially negative
oxygen.
So separatw water molecules form hydrogen bonds with each
other.
How are polymers broken down? - correct answer -hydrolysis
What are inorganic ions? - correct answer -Salts/Minerals
Inorganic = do not contain carbon, Ion = charged (+ve/-ve)
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E.g. Sodium Ions (Na+), Chloride Ions (Cl-)
What is kingdom of biology - correct answer -
animals,plant,bacteria,fungi,protists,multicellular,microorganisms.
Viruses arent living. All organisms made up of cells.
How does a zygote develop into an organism? - correct answer -
stem cell, undifferentiated
Divides by mitosis to make more stem cells
Each cell differentiates into specialised
Each specialised divides by mitosis to make tissues
Different tissues for organ, and so on
What are the two forms of reproduction? - correct answer -
asexual and sexual reproduction
What is the difference between eukaryotic and prokaryotic cells? -
correct answer -eukaryotic-membrane bound organelles e.g.
Nucleus.prokaryotic-no membrane bound organelles. Smaller
ribosomes.
AQA AS BIOLOGY PAPER 2 UPDATED
EXAM WITH VERIFIED SOLUTIONS.
What is microvilli? - correct answer -Small projections that
increase surfaces area for absorption and diffusion. Many
mitchondria release atp for active transport
Illeum question - correct answer -41,0.32(micro surface area.321
cell surface area
What is role and properties of water? - correct answer -acts as a
habitat for organisms,make up cytoplasm,tissue fluid,blood,xylem
and phloem.dipolar. Partially positive hydrogen partially negative
oxygen.
So separatw water molecules form hydrogen bonds with each
other.
How are polymers broken down? - correct answer -hydrolysis
What are inorganic ions? - correct answer -Salts/Minerals
Inorganic = do not contain carbon, Ion = charged (+ve/-ve)
, Page | 2
E.g. Sodium Ions (Na+), Chloride Ions (Cl-)
What is kingdom of biology - correct answer -
animals,plant,bacteria,fungi,protists,multicellular,microorganisms.
Viruses arent living. All organisms made up of cells.
How does a zygote develop into an organism? - correct answer -
stem cell, undifferentiated
Divides by mitosis to make more stem cells
Each cell differentiates into specialised
Each specialised divides by mitosis to make tissues
Different tissues for organ, and so on
What are the two forms of reproduction? - correct answer -
asexual and sexual reproduction
What is the difference between eukaryotic and prokaryotic cells? -
correct answer -eukaryotic-membrane bound organelles e.g.
Nucleus.prokaryotic-no membrane bound organelles. Smaller
ribosomes.
