AQA GCSE Biology Paper 1 Exam -
Revision Questions and Verified
Answers
How is the real size of a magnified image calculated? - ✔✔Real size =
Image size ÷ Total magnification.
What is a eukaryotic cell? - ✔✔A cell with DNA inside a membrane bound
nucleus. Prokaryotic cells do not have a nucleus.
Name two differences between a plant cell and a bacterial cell? - ✔✔Plant
cells have a nucleus / plant cells have mitochondria / plant cells have
chloroplasts / plant cells have a cellulose cell wall whereas bacteria do not
contain any of these structures. Bacteria have chromosomal DNA not in a
nucleus and have DNA plasmids whereas plant cells do not contain these
structures.
How can the rate of diffusion be increased? - ✔✔Higher temperature,
Steeper concentration gradient, Shorter diffusion distance
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Revision Questions and Verified
Answers
How is the real size of a magnified image calculated? - ✔✔Real size =
Image size ÷ Total magnification.
What is a eukaryotic cell? - ✔✔A cell with DNA inside a membrane bound
nucleus. Prokaryotic cells do not have a nucleus.
Name two differences between a plant cell and a bacterial cell? - ✔✔Plant
cells have a nucleus / plant cells have mitochondria / plant cells have
chloroplasts / plant cells have a cellulose cell wall whereas bacteria do not
contain any of these structures. Bacteria have chromosomal DNA not in a
nucleus and have DNA plasmids whereas plant cells do not contain these
structures.
How can the rate of diffusion be increased? - ✔✔Higher temperature,
Steeper concentration gradient, Shorter diffusion distance
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
