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Biology retrieval questions and exam practice
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A pack of biology questions aimed at grade 9 students
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Why are electron What is 5 micrometres in What 3 organelles are What is the difference What are the stages of How many chromosomes What is diffusion? What is active transport?microscopes better than metres? found in plant cells only? between eukaryotic and mitosis? do humans have?
light microscopes? prokaryotic cells?
What is osmosis? How can the rate of What is the role of bile in Where is amalyse made What are villi? What are enzymes? Explain the Lock and key What increases enzyme
diffusion/ osmosis be the digestive system? and what does it do? theory? activity?
increased?
What denatures enzymes? What do carbohydrases, In the enzyme practical, What are the tests for What are the tests for What are the tests for What is cancer? What is the difference
proteins and lipases break how do you know that sugars? starch? lipids? between benign and
down? amalyse has broken down malignant tumours?
all the starch?
What are the tests for Describe the function and Describe the function and Blood flow path in the How is the left side of the What are the differences What is a communicable What is the function of the
proteins? structure of the alveoli? structure of red blood cells? heart? heart different than the between arteries, veins and and non-communicable xylem and phloem?
right side? capillaries? disease?
How can the rate of What is special about the Explain the structure and Give the equation for Give the equation for Give the word equation for What do plants use glucose What factors increase the
transpiration be increased? meristem of a plant? function of the waxy aerobic respiration? photosynthesis? anaerobic respiration? for? rate of photosynthesis?
cuticle?
, Give 3 limiting factors for What are 2 types of white How do lymphocytes How do phagocytes combat How does a vaccine work? What is a blind trial? What is a double-blind What effect does lactic acid
photosynthesis? blood cells? combat viruses? viruses? trial? have on the muscles?
How is the oxygen debt What is the role of the What is the role of the large Where is protease What does protease break What is glucose used for? Explain the Lock and key What increases enzyme
restored from anaerobic small intestine? intestine? produced? down? theory? activity?
respiration?
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