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B2 REVISION – CHAPTER 1 – CELLS

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1 B2 REVISION – CHAPTER 1 – CELLS
What do plant cells have that animal cells do not? What is the function of: Nucleus – Mitochondria Ribosomes Chloroplasts Cell Wall Sketch and label a plant and an animal cell; Use pictures and words to describe the three ways substances can move in and out of cells Diffusion Osmosis Active Transport Draw and label 2 specialised cells. Explain their structure is adapted to suit their function KEY WORDS: Structure Function Specialised Diffusion Osmosis ASSESSMENT:

2 B2 REVISION – CHAPTER 2 – HOW PLANTS PRODUCE FOOD
What is the equation for photosynthesis Where in the plant does it occur? How are leaves adapted to perform photosynthesis? Why do plants need nitrates? Why do plants need magnesium? Explain how plants use glucose for the following: Respiration Transport Storage Explain how light, CO2 and temperature are limiting factors of photosynthesis KEY WORDS: Respiration Photosynthesis Limiting Factor Nitrates Magnesium ASSESSMENT: 2

3 B2 REVISION – CHAPTER 3 – ENERGY FLOWS
What is the main source of energy for living things? What is biomass and how does it change along a food chain? What organisms break down matter? What conditions do they require? Why is the process of decay important? Explain how energy is lost in the following ways: Waste Movement Maintaining Body Temperature Describe how energy losses can be reduced in food production Describe the different forms carbon can be found in, how it is used, and how it is cycled KEY WORDS: Biomass Decay Decomposer Carbon cycle Energy ASSESSMENT: 3

4 B2 REVISION – CHAPTER 4 – ENZYMES
What are enzymes made from? What do enzymes do? How do they work? (explain & draw the lock & key mechanism What is the equation for aerobic respiration? Where in the cell does it occur? Why do we need respiration? What are the 3 groups of enzymes in digestion? What is their substrate and what do they break them down into? 1) 2) 3) Why is the stomach acidic? What is bile, what does it do and how does it do it? What effect does temperature have on enzyme activity What effect does pH have on enzyme activity Describe 3 industrial uses for enzymes KEY WORDS: Enzyme Lock and Key Denature Aerobic respiration Bile Carbohydrase/Protease/Lipase ASSESSMENT: 4

5 B2 REVISION – CHAPTER 5 – HOMEOSTASIS
What is homeostasis? Explain why the following are regulated: Waste products CO2 Urea Water & ions What part of the brain controls body temperature? Explain how the body: a) Keeps Cool [e.g. how does sweating help?] b) Keeps warm How does the body control blood sugar levels? [Key Words: Insulin, Glucagon, Glycogen, Pancreas, Liver, Blood] What is diabetes? What are the symptoms? How can it be treated? KEY WORDS: Homeostasis Thermoregulatory Centre Vasodilation/Vasoconstriction Insulin/Glucagon Glycogen Diabetes ASSESSMENT: 5

6 B2 REVISION – CHAPTER 6 – INHERITANCE
What is mitosis and why is it needed? What is differentiation? How does it differ in plants and animals? What is meiosis? Why is it important? How does it help generate variation? What are stem cells? State 2 uses of stem cells: State 2 problems with stem cell research: Chromosomes are made of long strands of what? Small sections of this are called what? What do genes code for? What is DNA fingerprinting? How many chromosomes in a) gamete and b) somatic cell? What is an allele? What does a) dominant; and b) recessive mean? What is Huntington’s Disease and what causes it? What is Cystic Fibrosis and what causes it? On the back, cross 2 CF carriers and describe the offspring KEY WORDS: Chromosome Mitosis / Meiosis Gene Allele DNA Stem Cells ASSESSMENT: 6


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