AQA GCSE Biology - Paper 1 Questions with
verified correct detailed answers latest
update 2025
What does a nucleus do? --- correct answers ---It contains genetic
material and controls the activities of the cell
What does cytoplasm do? --- correct answers ---It's a gel-like
substance where most of the chemical reactions happen. It contains
enzymes that control these chemical reactions
What does a cell membrane do? --- correct answers ---It holds the cell
together and controls what goes in and out
What do mitochondria do? --- correct answers ---These are where
most of the reactions for aerobic respiration occur. Respiration
transfers energy that the cell needs to work
What do ribosomes do? --- correct answers ---This is where protein
synthesis takes place - where proteins are made in the cell
,What do cell walls do? --- correct answers ---They are made of
cellulose and they support and strengthen the cell
What does a vacuole do? --- correct answers ---It contains cell sap and
helps maintain the shape of the cell
What do chloroplasts do? --- correct answers ---This is where
photosynthesis occurs, which makes food for the plant. They contain
chlorophyll - a green pigment - which absorbs light needed for
photosynthesis
What do bacterial cells contain? --- correct answers ---Cytoplasm, cell
membrane, cell wall, flagella, ribosomes, mitochondria, slime capsule,
plasmids (small rings of DNA) and a single circular strand of DNA that
floats freely in the cytoplasm
What do bacterial cells NOT contain? --- correct answers ---A nucleus
What is the equation for magnification? --- correct answers ---Image
size divided by actual size
,What is differentiation? --- correct answers ---The process by which a
cell changes to become specialised for its job
What are undifferentiated cells called? --- correct answers ---Stem
cells
What are sperm cells specialised for and how are they specialised? ---
correct answers ---Reproduction - they transport the male DNA to the
female DNA
-It has a flagella and a streamlined head to help it swim towards the
egg
-There are lots of mitochondria in the cell to provide the energy
needed
-It carries enzymes in its head to help digest through the egg cell
membranes
What are nerve cells specialised for and how are they specialised? ---
correct answers ---Rapid signalling - they carry electrical signals from
one part of the body to another
-They are long to cover more distance
-They have branched connections at their ends to connect to other
nerve cells and form a network throughout the body
, What are muscle cells specialised for and how are they specialised? ---
correct answers ---Contraction - they need to contract quickly
-They are long so they have space to contract
-They contain lots of mitochondria to generate the energy needed for
contraction
What are root hair cells specialised for and how are they specialised?
--- correct answers ---Absorbing water and minerals
-They are cells on the surface of plant roots which grow into long
hairs that stick out into the soil
-They have a large surface area for absorbing water and mineral ions
from the soil
What are chromosomes? --- correct answers ---Coiled up lengths of
DNA molecules that are found in the nuclei
What do multicellular organisms use mitosis for? --- correct answers -
--To grow or replace cells that have been damaged
verified correct detailed answers latest
update 2025
What does a nucleus do? --- correct answers ---It contains genetic
material and controls the activities of the cell
What does cytoplasm do? --- correct answers ---It's a gel-like
substance where most of the chemical reactions happen. It contains
enzymes that control these chemical reactions
What does a cell membrane do? --- correct answers ---It holds the cell
together and controls what goes in and out
What do mitochondria do? --- correct answers ---These are where
most of the reactions for aerobic respiration occur. Respiration
transfers energy that the cell needs to work
What do ribosomes do? --- correct answers ---This is where protein
synthesis takes place - where proteins are made in the cell
,What do cell walls do? --- correct answers ---They are made of
cellulose and they support and strengthen the cell
What does a vacuole do? --- correct answers ---It contains cell sap and
helps maintain the shape of the cell
What do chloroplasts do? --- correct answers ---This is where
photosynthesis occurs, which makes food for the plant. They contain
chlorophyll - a green pigment - which absorbs light needed for
photosynthesis
What do bacterial cells contain? --- correct answers ---Cytoplasm, cell
membrane, cell wall, flagella, ribosomes, mitochondria, slime capsule,
plasmids (small rings of DNA) and a single circular strand of DNA that
floats freely in the cytoplasm
What do bacterial cells NOT contain? --- correct answers ---A nucleus
What is the equation for magnification? --- correct answers ---Image
size divided by actual size
,What is differentiation? --- correct answers ---The process by which a
cell changes to become specialised for its job
What are undifferentiated cells called? --- correct answers ---Stem
cells
What are sperm cells specialised for and how are they specialised? ---
correct answers ---Reproduction - they transport the male DNA to the
female DNA
-It has a flagella and a streamlined head to help it swim towards the
egg
-There are lots of mitochondria in the cell to provide the energy
needed
-It carries enzymes in its head to help digest through the egg cell
membranes
What are nerve cells specialised for and how are they specialised? ---
correct answers ---Rapid signalling - they carry electrical signals from
one part of the body to another
-They are long to cover more distance
-They have branched connections at their ends to connect to other
nerve cells and form a network throughout the body
, What are muscle cells specialised for and how are they specialised? ---
correct answers ---Contraction - they need to contract quickly
-They are long so they have space to contract
-They contain lots of mitochondria to generate the energy needed for
contraction
What are root hair cells specialised for and how are they specialised?
--- correct answers ---Absorbing water and minerals
-They are cells on the surface of plant roots which grow into long
hairs that stick out into the soil
-They have a large surface area for absorbing water and mineral ions
from the soil
What are chromosomes? --- correct answers ---Coiled up lengths of
DNA molecules that are found in the nuclei
What do multicellular organisms use mitosis for? --- correct answers -
--To grow or replace cells that have been damaged
