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Enzymes Draw a graph to show what happens to enzyme activity as temperature increases? What type of cell is this? Where is it found? activity What are enzymes? How is it adapted to it job? What do we call the model that is used to explain how enzymes work? temperature What happens to enzymes at high temperatures? What is the function of: • cell wall Why do we need enzymes? Give some examples of processes that are controlled by enzymes. B4 Revision – Life Processes Part 1 • Nucleus • Cell membrane • Chloroplast • cytoplasm Osmosis What is diffusion? What is active transport? How are osmosis and diffusion different? How are diffusion and active transport different? time partially permeable membrane What is a partially permeable membrane? Name 3 things that move in or out of cells: What is osmosis? Draw and label a plant cell and an animal cell What is the word/symbol equation for photosynthesis? B4 Revision – Life Processes Part 2 What are the tests for starch and glucose? Glucose is produced during photosynthesis. What does the plant use glucose for? Starch: • • • • Which is more efficient, aerobic or anaerobic respiration? What is the word/symbol equation for aerobic respiration? In animal cells: • Glucose • In plant cells and some microorganisms: • Glucose • • What is the energy produced in respiration used for? What three factors can limit the rate of photosynthesis? • Glucose: ________ respiration can take place in animal, plant and some microbial cells in conditions of low ________ or absence of _________ e.g. • Roots in waterlogged soil • Bacteria in puncture wounds • Human cells during vigorous exercise Equations for anaerobic respiration _______ acid (+energy released) _______ + carbon dioxide (+ energy released) How can anaerobic respiration of microorganisms be useful?