GCSE AQA Biology Higher 2025| COMPLETE
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Are animal cells Eukaryotic
eukaryotic or
prokaryotic?
Are plant cells eukaryotic Eukaryotic
or prokaryotic?
Are bacteria cells Prokaryotic
prokaryotic or
eukaryotic?
are prokaryotic cells much smaller
much bigger or smaller
than eukaryotic?
Parts of a eukaryotic cell cell membrane, cytoplasm, nucleus
cell wall
dna loop
Parts of a prokaryotic cell cell membrane
cytoplasm
plasmids
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,2/15/25, 7:58 PM GCSE AQA Biology Higher 2025| COMPLETE EXAM SET (questions and verified answers)frequently most tested questions | …
-nucleus
give 5 sub cellular
-cytoplasm
structures that are found
-cell membrane
in both animal and plant
-ribosomes
cells?
-mitochondria
give 3 sub cellular -cell wall
structures that are found -chloroplasts
in plant cells but not in -permanent vacuole
animal plants?
what the function of the contains genetic material
nucleus ?
Function of cell regulates what enters and leaves the cell
membrane
function of mitochondria cellular respiration
Contains chlorophyll which absorbs light energy for
function of chloroplast
photosyntheis
cell wall function? provides support and protection
function of plasmids in contains extra genetic material that can help the
bacteria cell? bacteria cell survive
What are plant cell walls cellulose
made of?
what is a plant cells cell sap
permanent vacuole filled
will?
give 2 differences electron microscopes have a much higher
between electron magnification and a much higher resolution than
microscopes and light light microscopes
microscopes?
what formula is used to magnification = imagine size /real size
calculate magnification
of an image?
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,2/15/25, 7:58 PM GCSE AQA Biology Higher 2025| COMPLETE EXAM SET (questions and verified answers)frequently most tested questions | …
USING A LIGHT MICROSCOPE TO LOOK AT A
PREPARED SLIDE
1)put the slide on the stage
give a brief method for 2)select the lowest power lens
using a light microscope 3)use the coarse adjustment knob to roughly focus
to look at a prepared the slide
slide 4)use the fine adjustment(FA)knob to clearly focus
the slide
5)switch to a higher power lens to increase
magnification and refocus with the FA knob
give 3 things to -use a pencil
remember when drawing -label the main structures
cells observed through a -include the magnification used
light microscope ?
when cells differentiate they develop different sub-
what happens when cells
cellular structures that make them carry out certain
differentiate?
functions
most animal cells differentiate early in development
how are animal cells
and can't differentiate again
different to plant cells in
their ability to
many plant cells can differentiate whenever they
differentiate?
need to
FUNCTION:to get DNA into egg cell
give 3 ways that a sperm
-tail for swimming
cell is specialised to do
-lots of mitochondria to provide energy
its job
-enzymes in head to digest egg cell membrane
FUNCTION:carries messages around the body at
give 2 ways that a nerve
high speed
cell is specialised to do
-fatty sheath speeds up message transport
its job
-long so it can carry messages over a distance
FUNCTION:helps a plant absorb water and minerals
how is a plant root cell from soil.
specialised to do its job? -a long and thin extension gives a larger surface
area for absorption
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, 2/15/25, 7:58 PM GCSE AQA Biology Higher 2025| COMPLETE EXAM SET (questions and verified answers)frequently most tested questions | …
FUNCTION:creates movement by contracting and
give 2 ways that muscle relaxing
cells are specialised to -long protein strands that can slide over each other
do their jobs? ti shorten/lengthen the cell
-lots of mitochondria to generate energy
FUNCTION:Xylem cells form tubes that transport
How are xylem cells ester and minerals through the plant.
specialised? *they're dead cells with holes at either end-water
and minerals can just flow right through them
FUNCTION:transport dissolved sugars in a plant.
How are phloem cells -few sub cellular structures so sugars flow through
specialised? easily
-pores in end walls to let sugars through
Where are chromosomes nucleus
found?
what are chromosomes long lengths of DNA
made up of?
how many chromosomes there are 46 in a human body cell
are there in the total
human body?
how many pairs of there are 23 pairs of chromosomes in a human body
chromosomes are there cell
in the human body cell?
why is the cell cycle because it creates new cells which allows organisms
important? to grow and develop
1)growth
what are the three stages
2)mitosis
of the cell cycle?
3)Division
-extra sub cellular structures
what happens during the
are made
growth stage of the cell
-the DNA of each
cycle?
chromosome is duplicated
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