AQA Biology Paper 1 | 2025/2026 Complete Exam Q&A on Cells, Enzymes & Pathogens

AQA Biology - Paper 1 2025/2026 Exam
Questions and Answers | 100% Solved



What are cells? - 🧠 ANSWER ✔✔The smallest unit of life that can replicate

independently

What's another way of saying sub cellular structure? - 🧠 ANSWER

✔✔Organelles


What's the function of the cell membrane? - 🧠 ANSWER ✔✔To control

which substances can pass in and out of the cell


What's the function of the nucleus? - 🧠 ANSWER ✔✔To contain the genetic

material / DNA


What's the function of cytoplasm? - 🧠 ANSWER ✔✔Where chemical

reactions take place


What's the function of mitochondria? - 🧠 ANSWER ✔✔To provide cells with

the energy they need to function and to be the site of aerobic respiration




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,What's the function of ribosomes? - 🧠 ANSWER ✔✔The site of protein

synthesis


What extra organelles do plant cells have? - 🧠 ANSWER ✔✔cell wall,

vacuole, chloroplasts


What's the function of the cell wall? - 🧠 ANSWER ✔✔To support the

structure of the cell


What's the function of chloroplasts? - 🧠 ANSWER ✔✔The site of

photosynthesis


What's the function of the permanent vacuole? - 🧠 ANSWER ✔✔To contain

cell sap (sugars, salt, water)


What organelles do animal cells have? - 🧠 ANSWER ✔✔Nucleus,

cytoplasm, cell membrane, mitochondria, ribosomes


What organelles do plant cells have? - 🧠 ANSWER ✔✔Nucleus, cytoplasm,

cell membrane, mitochondria, ribosomes, cell wall, vacuole, chloroplasts


What organelles can bacteria cells have? - 🧠 ANSWER ✔✔Cell wall, cell

membrane, ribosomes, cytoplasm, circular strand of DNA, plasmids




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,What's the function of plasmids? - 🧠 ANSWER ✔✔To provide extra genes

and antibiotic resistance


what's the function of a circular strand of DNA? - 🧠 ANSWER ✔✔To contain

the genes needed to survive anf reproduce


What are the 2 types of cells? - 🧠 ANSWER ✔✔Prokaryotic and Eukaryotic


What's a eukaryotic cell? - 🧠 ANSWER ✔✔A cell that has a cutoplasm, cell

membrane and have their genetic material contained within a nucleus


What's a prokaryotic cell? - 🧠 ANSWER ✔✔A cell that has a cytoplasm and

cell membrane surrounded by a cell wall and do not have its genetic

material contained within a nucleus


Give 2 examples of eukaryotes - 🧠 ANSWER ✔✔Plants and animals


Give 1 example of a prokaryote - 🧠 ANSWER ✔✔Bacteria


Are prokaryotes unicellular or multicellular? - 🧠 ANSWER ✔✔Unicellular


Are eukaryotes unicellular or multicellular? - 🧠 ANSWER ✔✔They can be

both




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, What makes plants turn green? - 🧠 ANSWER ✔✔Chlorophyll in

chloroplasts


What's the cell wall made of? - 🧠 ANSWER ✔✔Cellulose


Are bacteria cells larger or smaller than animal cells? - 🧠 ANSWER

✔✔Smaller


What's the size of animal cells in micrometers? - 🧠 ANSWER ✔✔10-30


What's the size of plant cells in micrometers? - 🧠 ANSWER ✔✔10-100


What's the size of bacteria cells in micrometers? - 🧠 ANSWER ✔✔1


What specialised structure would you expect to find in bacteria that live in

water? - 🧠 ANSWER ✔✔Flagellum


What's meant by specialised? - 🧠 ANSWER ✔✔The ability to do a specific

job


What's meant by differentiate? - 🧠 ANSWER ✔✔The process of becoming

specialised


What's the job of Nerve Cells? - 🧠 ANSWER ✔✔To carry electrical

impulses around the body


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