AQA GCSE Biology Paper 1 Revision Quiz

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Last updated: May 15, 2023

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Hint	Answer
Where is DNA found in a bacterium?	Loops / Cytoplasm
What is a parasite?	An organism that feeds on another living organism
Where are proteins made in a cell?	On the ribosomes
What is the function of cell sap?	To support the cell
Why do the walls of capillaries & alveoli need to be thin?	To allow gas to pass across
Which component of blood makes it clot?	Platelets
Which type of blood vessel carries blood away from the heart?	Artery
In which chamber does deoxygenated blood enter the heart?	Right atrium
What do the heart and veins contain to prevent backflow of blood?	Valves
What type of molecule is an enzyme?	A protein
Where are protease enzymes produced in the body?	In the stomach / pancreas / small intestine
What type of enzyme breaks down lipids?	Lipase
Where is bile produced?	In the liver
Why do cells differentiate?	To become specialised / more efficient
What is required for substances to be absorbed against a concentration gradient?	Energy from respiration

Hint	Answer
Name a feature that makes an exchange surface more efficient	Large surface area / thin walls / rich blood supply
Why is it important that the chromosomes are copied before mitosis occurs?	So that each new cell gets the full amount of chromosomes
What is a stem cell?	A cell that is not specialised / can divide to form various types of cells
Why does a plant cell have a meristem at the tip of the shoot and the tip of each root?	To produce new cells so the root & shoot can grow
Arrange these structures in order of size with the largest first: bacterium, liver cell, nucleus, ribosome	Liver cell
	Nucleus
	Bacterium
	Ribosome
What is the role of the Nucleus?	Controls activities of the cell / contains genetic material
What happens in the cytoplasm?	Most chemical reactions take place
What does the cell membrane do?	Controls the passage of substances in and out of the cell
Where in the heart are pacemaker cells found?	Right atrium
Name the enzyme that digests starch in the human digestive system	Amylase
What is the role of stomata & guard cells?	To control gas exchange / To control water loss
What is the definition of an organ?	A collection of tissues performing specific functions