Exam (elaborations)
2024 AQA GCSE Biology Paper 1 Exam QUESTIONS & ANSWERS ( A+ GRADED 100% VERIFIED)
- Course
- Institution
2024 AQA GCSE Biology Paper 1 Exam QUESTIONS & ANSWERS 2024( A+ GRADED 100% VERIFIED)
[Show more]
Seller
Follow
STARSHINESTUVIA
Reviews received
Content preview
2024AQA
GCSE
Biology
Paper
1
What
are
the
two
types
of
cells?
-
ANS
●
Eukaryotic
(plant
and
animal)
●
Prokaryotic
(bacteria)
What
are
the
differences
between
eukaryotic
and
prokaryotic
cells?
-
ANS
Prokaryotic
cells
are
much
smaller
than
eukaryotic
cells.
Eukaryotic
cells
contain
membrane
bound-organelles
and
a
nucleus
containing
genetic
material,
while
prokaryotes
do
not.
How
is
genetic
information
stored
in
a
prokaryotic
cell?
-
ANS
Found
free
within
the
cytoplasm
as:
●
Chromosomal
DNA
(single
large
loop
of
circular
DNA)
●
Plasmid
DNA
What
are
plasmids
?
-
ANS
●
Small,
circular
loops
of
DNA
found
free
in
the
cytoplasm
and
separate
from
the
main
DNA.
●
Carry
genes
that
provide
genetic
advantages
e.g.
antibiotic
resistance.
List
the
components
of
both
plant
and
animal
cells
(5)
-
ANS
●
Nucleus
●
Cytoplasm
●
Cell
membrane
●
Mitochondria
●
Ribosomes
List
the
additional
cell
components
found
in
plant
cells
(3)
-
ANS
●
Chloroplasts
●
Permanent
vacuole
●
Cell
wall
Other
than
storing
genetic
information,
what
is
the
function
of
the
nucleus
?
-
ANS
Controls
cellular
activities
Describe
the
structure
of
the
cytoplasm
-
ANS
●
Fluid
component
of
the
cell.
●
Contains
organelles,
enzymes
and
dissolved
ions
and
nutrients.
What
is
the
function
of
the
cytoplasm?
-
ANS
Site
of
cellular
reactions
e.g.
first
stage
of
respiration. Transport
medium.
What
is
the
function
of
the
cell
membrane?
-
ANS
Controls
the
entry
and
exit
of
materials
into
and
out
of
the
cell.
What
is
the
function
of
the
mitochondria?
-
ANS
Site
of
later
stages
of
aerobic
respiration
in
which
ATP
is
produced.
What
is
the
function
of
the
ribosomes?
-
ANS
Joins
amino
acids
in
a
specific
order
during
translation
for
the
synthesis
of
proteins.
What
is
the
plant
cell
wall
made
of?
-
ANS
Cellulose
What
is
the
function
of
the
plant
cell
wall?
-
ANS
●
Provides
strength.
●
Prevents
the
cell
bursting
when
water
enters
by
osmosis.
What
does
the
permanent
vacuole
contain?
-
ANS
Cell
sap
(a
solution
of
salts,
sugars
and
organic
acids).
What
is
the
function
of
the
permanent
vacuole?
-
ANS
Supports
the
cell,
maintaining
its
turgidity.
What
is
the
function
of
chloroplasts?
-
ANS
Site
of
photosynthesis
Describe
how
sperm
cells
in
animals
are
adapted
to
their
function
-
ANS
●
Haploid
nucleus
contains
genetic
information.
●
Tail
enables
movement.
●
Mitochondria
provide
energy
for
tail
movement.
●
Acrosome
contains
enzymes
that
digest
the
egg
cell
membrane.
Describe
how
nerve
cells
in
animals
are
adapted
to
their
function
-
ANS
●
Long
axon
allows
electrical
impulses
to
be
transmitted
all
over
the
body
from
the
central
nervous
system.
●
Dendrites
from
the
cell
body
connect
to
and
receive
impulses
from
other
nerve
cells,
muscles
and
glands.
●
Myelin
sheath
insulates
the
axon
and
speeds
up
the
transmission
of
impulses
along
the
nerve
cell. Describe
how
muscle
cells
are
adapted
to
their
function
-
ANS
●
Arrangement
of
protein
filaments
allows
them
to
slide
over
each
other
to
produce
muscle
contraction.
●
Mitochondria
to
provide
energy
for
muscle
contraction.
Describe
how
root
hair
cells
in
plants
are
adapted
to
their
function
-
ANS
●
Large
surface
area
to
absorb
nutrients
and
water
from
surrounding
soil.
●
Thin
walls
that
do
not
restrict
water
absorption.
Describe
how
xylem
cells
in
plants
are
adapted
to
their
function
-
ANS
They
lose
their
end
walls
so
the
xylem
forms
a
continuous,
hollow
tube.
They
become
strengthened
by
a
substance
called
lignin.
Lignin
gives
strength
and
support
to
the
plant.
We
call
lignified
cells
wood.
Describe
how
phloem
cells
in
plants
are
adapted
to
their
function
-
ANS
●
Sieve
plates
let
dissolved
amino
acids
and
sugars
be
transported
up
and
down
the
stem.
●
Companion
cells
provide
energy
needed
for
active
transport
of
substances
along
the
phloem.
What
is
cell
differentiation?
-
ANS
The
process
by
which
cells
become
specialised.
Why
is
cell
differentiation
important?
-
ANS
Allows
production
of
different
tissues
and
organs
that
perform
various
vital
functions
in
the
human
body.
At
what
point
in
their
life
cycle
do
most
animal
cells
differentiate?
-
ANS
Early
in
their
life
cycle
For
how
long
do
plant
cells
retain
the
ability
to
differentiate?
-
ANS
Throughout
their
entire
life
cycle
What
is
the
purpose
of
cell
division
in
mature
animals?
-
ANS
Repair
and
replacement
of
cells What
changes
does
a
cell
go
through
as
it
differentiates?
-
ANS
Becomes
specialised
through
acquisition
of
different
sub-cellular
structures
to
enable
a
specific
function
to
be
performed
by
the
cell.
Define
magnification
-
ANS
The
number
of
times
bigger
an
image
appears
compared
to
the
size
of
the
real
object.
Define
resolution
-
ANS
The
smallest
distance
between
two
objects
that
can
be
distinguished.
How
does
a
light
microscope
work?
-
ANS
Passes
a
beam
of
light
through
a
specimen
which
travels
through
the
eyepiece
lens,
allowing
the
specimen
to
be
observed.
What
are
the
advantages
of
light
microscopes?
(4)
-
ANS
●
Inexpensive
●
Easy
to
use
●
Portable
●
Observe
both
dead
and
living
specimens
What
is
the
disadvantage
of
light
microscopes?
-
ANS
Limited
resolution
How
does
an
electron
microscope
work?
-
ANS
It
uses
a
beam
of
electrons
which
are
focused
using
magnets.
The
electrons
hit
a
fluorescent
screen
which
emits
visible
light,
producing
an
image.
Name
the
two
types
of
electron
microscope
-
ANS
Transmission
electron
microscope
(TEM)
Scanning
electron
microscope
(SEM)
What
is
the
advantage
of
electron
microscopes?
-
ANS
Greater
magnification
and
resolution.
Why
do
electron
microscopes
have
a
greater
magnification
and
resolution?
-
ANS
They
use
a
beam
of
electrons
which
has
a
shorter
wavelength
than
photons
of
light.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller STARSHINESTUVIA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R412,87. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now