Biology GCSE AQA Year 10 Mock Exam
with correct answers
What is the equation for magnification? - correct answer -Magnification = image size / size of real object
What are the names of the 3 microscopes? - correct answer -Light microscope, transmission electron
microscopes, scanning electron microscopes
Transmission electron microscopes... - correct answer -Give 2D images with very high magnification and
resolution
Scanning electron microscopes... - correct answer -Give 3D images with lower magnification
Animal cells contain... - correct answer -Cell membrane, nucleus, cytoplasm, mitochondria, ribosomes
What do plant cells contain, not animal cells? - correct answer -Chloroplasts, cell wall and a permanent
vacuole
What is the cell wall made from and what do they do? - correct answer -Cellulose strengthens the cell
and gives it support
What do chloroplasts contain and what does it do? - correct answer -Chlorophyll absorbs light so the
plant can make food by photosynthesis
Give 3 adaptions of the root hair cells - correct answer -They increase the surface area available for
water to move into the cell.
They have a large permanent vacuole that speeds up the process of osmosis from the soil.
They have many mitochondria that transfer the energy needed for active transport of mineral ions.
, Give 2 adaptions of xylem cells - correct answer -Xylem cells are alive when first formed but a chemical
called lignin builds up in spirals in the cell walls. The cells die and form hollow tubes that transfer water
and mineral ions.
The spirals of lignin in the xylem cells make them very strong to help them withstand pressure.
Give 3 adaptions of nerve cells - correct answer -Lots of dendrites to make connections to other nerve
cells.
An axon that carries nerve impulses from one place to another.
Synapses (nerve endings) are adapted to pass impulses to another cell using transmitter chemicals; they
also have lots of mitochondria to make the transmitter chemicals.
Give 4 adaptions of sperm cells - correct answer -A long tail moves to help the sperm travel.
Lots of mitochondria for energy needed for the tail to work.
Acrosome stores digestive enzymes to break outer layer of egg.
Large nucleus allows for genetic information to be passed on.
Describe osmosis - correct answer -Osmosis involves water only, needs a semi permeable membrane
and high to low concentration.
Describe diffusion - correct answer -Across a high to low concentration and involves the transport of
solutes.
Describe active transport - correct answer -Requires energy, against concentration gradient, needs a
semi permeable membrane and involves the transport of solutes.
What is lime water used to test for and what happens? - correct answer -Used to test for carbon dioxide
and goes cloudy if present
Describe stage 1 of the cell cycle - correct answer -Cell grows bigger, increases mass, and carry out
normal cell activities. They replicate their DNA to form 2 copies of each chromosome ready for cell
division.
with correct answers
What is the equation for magnification? - correct answer -Magnification = image size / size of real object
What are the names of the 3 microscopes? - correct answer -Light microscope, transmission electron
microscopes, scanning electron microscopes
Transmission electron microscopes... - correct answer -Give 2D images with very high magnification and
resolution
Scanning electron microscopes... - correct answer -Give 3D images with lower magnification
Animal cells contain... - correct answer -Cell membrane, nucleus, cytoplasm, mitochondria, ribosomes
What do plant cells contain, not animal cells? - correct answer -Chloroplasts, cell wall and a permanent
vacuole
What is the cell wall made from and what do they do? - correct answer -Cellulose strengthens the cell
and gives it support
What do chloroplasts contain and what does it do? - correct answer -Chlorophyll absorbs light so the
plant can make food by photosynthesis
Give 3 adaptions of the root hair cells - correct answer -They increase the surface area available for
water to move into the cell.
They have a large permanent vacuole that speeds up the process of osmosis from the soil.
They have many mitochondria that transfer the energy needed for active transport of mineral ions.
, Give 2 adaptions of xylem cells - correct answer -Xylem cells are alive when first formed but a chemical
called lignin builds up in spirals in the cell walls. The cells die and form hollow tubes that transfer water
and mineral ions.
The spirals of lignin in the xylem cells make them very strong to help them withstand pressure.
Give 3 adaptions of nerve cells - correct answer -Lots of dendrites to make connections to other nerve
cells.
An axon that carries nerve impulses from one place to another.
Synapses (nerve endings) are adapted to pass impulses to another cell using transmitter chemicals; they
also have lots of mitochondria to make the transmitter chemicals.
Give 4 adaptions of sperm cells - correct answer -A long tail moves to help the sperm travel.
Lots of mitochondria for energy needed for the tail to work.
Acrosome stores digestive enzymes to break outer layer of egg.
Large nucleus allows for genetic information to be passed on.
Describe osmosis - correct answer -Osmosis involves water only, needs a semi permeable membrane
and high to low concentration.
Describe diffusion - correct answer -Across a high to low concentration and involves the transport of
solutes.
Describe active transport - correct answer -Requires energy, against concentration gradient, needs a
semi permeable membrane and involves the transport of solutes.
What is lime water used to test for and what happens? - correct answer -Used to test for carbon dioxide
and goes cloudy if present
Describe stage 1 of the cell cycle - correct answer -Cell grows bigger, increases mass, and carry out
normal cell activities. They replicate their DNA to form 2 copies of each chromosome ready for cell
division.
