AQA Biology Triple Paper 1Exam 2025 UPDATE/PRACTICE QUESTIONS AND CORRECT
VERIFIED ANSWERS(complete solutions)ASSURED SUCCESS/GRADED A+
What is cell differentiation? - (answer)the process by which unspecialized cells develop into their mature
forms and functions
What is a eukaryotic cell? - (answer)Cell with a nucleus and membrane bound organelles
What is a prokaryotic cell? - (answer)cell that does not have a nucleus or membrane bound organelles
What are the Differences and similarities between Prokaryotic and Eukaryotic cells - (answer)Eukaryotic
contain a nucleus and Prokaryotic dont
Eukaryotic= 10-100hm (micro)
Prokaryotic = 0.1 - 10 hm (micro)
what does the word centi mean? - (answer)"centi" means 1/100th (of a metre) so 1m = 100 cm
1 x 10^-2 m
What does the word milli mean? - (answer)It means 1/1000th ( of a metre) so 1cm = 10mm
1 x 10^-3 m
What does the word micro mean? - (answer)It mean 1 millionth (of a metre)
1 hm = 1 x 10^-6 m
used to measure cells
What does the word nano mean? - (answer)It means 1 000 000 000 th (of a metre )
1nm= 1 x 10^-9
used to measure proteins in cells such a hemoglobin
What is the Order of Magnitude? - (answer)A way of comparing sizes of objects
,AQA Biology Triple Paper 1Exam 2025 UPDATE/PRACTICE QUESTIONS AND CORRECT
VERIFIED ANSWERS(complete solutions)ASSURED SUCCESS/GRADED A+
EG. each order of magnitude is increased by x10
x10 = 1 O of M x100 = 2 O of M
ANIMAL AND PLANT: What is the function of the nucleus? - (answer)contains the cell's genetic material
(DNA)
ANIMAL AND PLANT :What is the function of the Cytoplasm? - (answer)Where chemical reactions take
place
ANIMAL AND PLANT: What is the function of the mitochondria? - (answer)Where cellular Aerobic
respiration takes place
ANIMAL AND PLANT: What is the function of the cell membrane? - (answer)The cell membrane
regulates what enters and leaves the cell and also protects and supports the cell.
ANIMAL AND PLANT: What is the function of Ribosomes? - (answer)The site of protein synthesis, where
new proteins are made.
PLANT: what is the function of chloroplasts? - (answer)Contain chlorophyll , allows photosynthesis.
PLANT: what is the function of the cell wall? - (answer)Made from cellulose, strengthens the cell
PLANT: what is the function of the Vacuole? - (answer)Filled with cell sap. Help keeps the cell in its
shape.
What is differentiation? - (answer)The process by which a cell changes to become specialised for its job
What are examples of unspecialised cells? - (answer)Stem cells
, AQA Biology Triple Paper 1Exam 2025 UPDATE/PRACTICE QUESTIONS AND CORRECT
VERIFIED ANSWERS(complete solutions)ASSURED SUCCESS/GRADED A+
Animal: What are sperm cells and how are they specialised?/adapted? - (answer)-Sperm cells aid in
reproduction, they pass on the fathers DNA so it can pair with mother DNA in the ovum
-Sperm contains half the amount of chromosomes in nucleus.
- They have a long tail that rotates which allows it to swim
- contain many mitochondria so provides alot of energy
- the head contains enzymes to digest the the outer layer of ovum and allow the sperm to enter
Animal: What are nerve cells and how are they specialised ?/adapted? - (answer)-Nerve cells send
electrical signals around body
- Long axon (body) so it can carry energy over a longer distance
- A material called Myelin insulates Axon , speeds up transmission of impulses
-End of Axon have synapses, allows to connect to other nerve cells
Animal: What are muscle cells and how are they specialised?/ adapted? - (answer)-Muscles cells
contract and allow movement
-Muscle cells can contract ( get shorter) due to protein fibers that can change length
- they packed of mitochondria to provide energy for contraction
-form muscle tissue to work together efficiently
Plant: What are root hair cells and how are they specialised/ adapted? - (answer)-They absorb water and
mineral ions from the soil
- root hair increases surface area of the root so more water can be taken in via osmosis
-thinner walls allow water move in more easily
-Do not contain chloroplasts as they do not have access to light
Plant: What are Xylem cells and how are they specialised?/adapted? - (answer)- They are found in the
stem and form hollow tubes that transport water + minerals to leaves via transpiration
-thick walls containing lignin provide support to plant, causes cells to die so water + minerals can flow
easily
VERIFIED ANSWERS(complete solutions)ASSURED SUCCESS/GRADED A+
What is cell differentiation? - (answer)the process by which unspecialized cells develop into their mature
forms and functions
What is a eukaryotic cell? - (answer)Cell with a nucleus and membrane bound organelles
What is a prokaryotic cell? - (answer)cell that does not have a nucleus or membrane bound organelles
What are the Differences and similarities between Prokaryotic and Eukaryotic cells - (answer)Eukaryotic
contain a nucleus and Prokaryotic dont
Eukaryotic= 10-100hm (micro)
Prokaryotic = 0.1 - 10 hm (micro)
what does the word centi mean? - (answer)"centi" means 1/100th (of a metre) so 1m = 100 cm
1 x 10^-2 m
What does the word milli mean? - (answer)It means 1/1000th ( of a metre) so 1cm = 10mm
1 x 10^-3 m
What does the word micro mean? - (answer)It mean 1 millionth (of a metre)
1 hm = 1 x 10^-6 m
used to measure cells
What does the word nano mean? - (answer)It means 1 000 000 000 th (of a metre )
1nm= 1 x 10^-9
used to measure proteins in cells such a hemoglobin
What is the Order of Magnitude? - (answer)A way of comparing sizes of objects
,AQA Biology Triple Paper 1Exam 2025 UPDATE/PRACTICE QUESTIONS AND CORRECT
VERIFIED ANSWERS(complete solutions)ASSURED SUCCESS/GRADED A+
EG. each order of magnitude is increased by x10
x10 = 1 O of M x100 = 2 O of M
ANIMAL AND PLANT: What is the function of the nucleus? - (answer)contains the cell's genetic material
(DNA)
ANIMAL AND PLANT :What is the function of the Cytoplasm? - (answer)Where chemical reactions take
place
ANIMAL AND PLANT: What is the function of the mitochondria? - (answer)Where cellular Aerobic
respiration takes place
ANIMAL AND PLANT: What is the function of the cell membrane? - (answer)The cell membrane
regulates what enters and leaves the cell and also protects and supports the cell.
ANIMAL AND PLANT: What is the function of Ribosomes? - (answer)The site of protein synthesis, where
new proteins are made.
PLANT: what is the function of chloroplasts? - (answer)Contain chlorophyll , allows photosynthesis.
PLANT: what is the function of the cell wall? - (answer)Made from cellulose, strengthens the cell
PLANT: what is the function of the Vacuole? - (answer)Filled with cell sap. Help keeps the cell in its
shape.
What is differentiation? - (answer)The process by which a cell changes to become specialised for its job
What are examples of unspecialised cells? - (answer)Stem cells
, AQA Biology Triple Paper 1Exam 2025 UPDATE/PRACTICE QUESTIONS AND CORRECT
VERIFIED ANSWERS(complete solutions)ASSURED SUCCESS/GRADED A+
Animal: What are sperm cells and how are they specialised?/adapted? - (answer)-Sperm cells aid in
reproduction, they pass on the fathers DNA so it can pair with mother DNA in the ovum
-Sperm contains half the amount of chromosomes in nucleus.
- They have a long tail that rotates which allows it to swim
- contain many mitochondria so provides alot of energy
- the head contains enzymes to digest the the outer layer of ovum and allow the sperm to enter
Animal: What are nerve cells and how are they specialised ?/adapted? - (answer)-Nerve cells send
electrical signals around body
- Long axon (body) so it can carry energy over a longer distance
- A material called Myelin insulates Axon , speeds up transmission of impulses
-End of Axon have synapses, allows to connect to other nerve cells
Animal: What are muscle cells and how are they specialised?/ adapted? - (answer)-Muscles cells
contract and allow movement
-Muscle cells can contract ( get shorter) due to protein fibers that can change length
- they packed of mitochondria to provide energy for contraction
-form muscle tissue to work together efficiently
Plant: What are root hair cells and how are they specialised/ adapted? - (answer)-They absorb water and
mineral ions from the soil
- root hair increases surface area of the root so more water can be taken in via osmosis
-thinner walls allow water move in more easily
-Do not contain chloroplasts as they do not have access to light
Plant: What are Xylem cells and how are they specialised?/adapted? - (answer)- They are found in the
stem and form hollow tubes that transport water + minerals to leaves via transpiration
-thick walls containing lignin provide support to plant, causes cells to die so water + minerals can flow
easily
