B2 REVISION – CHAPTER 1 – Cells, tissues and organs 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 two ways substances can move in and out of cells Diffusion Active Transport Define the following terms: Tissue Organ Organ System Draw and label 2 specialised cells. Explain their structure is adapted to suit their function KEY WORDS: Structure Function Specialised Diffusion Osmosis ASSESSMENT:

B2 REVISION – CHAPTER 2 – Photosynthesis 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

B2 REVISION – CHAPTER 2 Continued – Organisms in their environment What physical factors can affect the distribution of living organisms? Why do we need to collect data n the distribution of living organisms? Explain how you could use a quadrat and a transect to collect data on the distribution of organisms Define the following words: Mean Median Mode Range What can we use data about the distribution of living organisms for? KEY WORDS: Quadrat Transect Sample Distribution ASSESSMENT: 3

B2 REVISION – CHAPTER 3 – 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

B2 REVISION – CHAPTER 4 – Energy from Respiration What is the formula for: Aerobic Respiration Anaerobic respiration Give three reasons with detail as to why organisms need to respire 1. 2. 3. Where does respiration take place? Draw a diagram. HIGHER TIER ONLY Explain the term ‘oxygen debt’ How do you repay this debt? Which type of respiration releases the most energy? Describe the effects that exercise has on the body. For each effect, explain why this happens KEY WORDS: Aerobic Anaerobic Respiration Lactic Acid Oxygen debt (H) ASSESSMENT: 5

B2 REVISION – CHAPTER 5 – 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 Polydactyly 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

B2 REVISION – CHAPTER 6 – Old and new species What is a fossil? How are they formed? What is the major problem with the fossil record? Why is this an issue? What is extinction? What can cause extinction? What is isolation and how does it occur? How does this lead to new species? HIGHER ONLY What is speciation? KEY WORDS: Fossil Extinction Isolation Evolution Speciation (H) ASSESSMENT: 7