B2 REVISION COORDINATION AND CONTROL Name the five sense organs: . Fill in the blanks: Receptor  _________ __________________ _________  _________ _________  effector Describe the reflex arc shown in this diagram What is the menstrual cycle? Describe how the hormones of the menstrual cycle interact FSH Oestrogen Progesterone LH Draw a diagram of geotropism in roots and shoots: What is a hormone? What is the function of the following glands: Pituitary gland Thyroid gland Adrenal Gland Pancreases Ovary Teste

B2 REVISION – Homeostasis Thermoregulatory centre Thermoregulation: Describe how the body reacts when it is cold: Describe how the body reacts when it is hot: Draw the thermoregulation feedback loop: Blood glucose: Describe how insulin controls blood sugar levels in the body: Describe how glucagon controls blood sugar levels in the body:: Draw the blood glucose feedback loop: Diabetes: What is the difference between type 1 and type 2 diabetes?: What are the causes of type one and type 2 diabetes? What are the treatments of type 1 and type 2 diabetes? State the internal conditions that the body needs to maintain: KEY WORDS: Temperature Thermoregulatory centre Hypothermia Insulin Type 1 diabetes Glucagon ASSESSMENT:

B2 REVISION – CHAPTER 5 – Cell Division and Growth What is an allele? What does a) dominant; and b) recessive mean? Draw a punnet's square to show how two brown eyed parents can have a blue eyed child Labe l the diagram: A gene is a section of D____. It controls a c____________ of your body. You have ___ chromosomes in the n______ of your b_______ cells. Arranged in _____ pairs. One of each pair is inherited from your m________ and one from your f_________. Your sex cells or g_________ only have _____ chromosomes. What is the name of this process? Write down an explanation of what is happening at each stage in the boxes. How many daughter cells produced? Are the genes identical or different to parental cell? Why and where do cells undergo mitosis? A mnemonic for mitosis: “Mitosis goes on in my toes, and toes are not sexy” What is the name of this process? Write down an explanation of what is happening at each stage in the boxes. How many daughter cells produced? Are the genes identical or different to parental cell? Why and where do cells undergo meiosis? 3

B2 REVISION – VARIATION & REPRODUCTION Define these key words: Genes: Chromosomes: DNA: Phenotype: Genotype: Genome; Homozygous; Heterozygous:: Mutation: Explain how chickens have been selectively bred since 1957 to produce the chickens we have today: Fill in the gaps to explain genetic engineering of insulin: The first step in the biotechnological process is that a special enzyme is used to cut the insulin ..................................... out from a human ............................................. . In a separate operation, a ring of bacterial ............................................... is cut open using a special enzyme. These two pieces of genetic material are combined together to form a new plasmid ring which is inserted into a bacterium. The bacterium is placed in an _________ What is sexual reproduction? What is asexual reproduction? KEY WORDS: Genes Clones Gametes Tissue culture Chromosomes Genetically modified DNA Sexual / asexual reproduction Genetic engineering ASSESSMENT:

B2 REVISION - OLD & NEW SPECIES How do these fossils support the theory of evolution What are fossils? Name and escribe 4 ways they can be formed Why do we describe fossil records as incomplete? What is extinction? Describe how… …environmental change leads to extinction …organisms can cause extinction Describe how new species can evolve through geographical isolation: Higher: include info on speciation What caused the extinction of the dinosaurs? KEY WORDS: Fossils Extinction Geographical isolation Endemic Speciation ASSESSMENT:

B2 REVISION ADAPTATION FOR SURVIVAL How are plants adapted to different environments? How are animals adapted to different environments? What do plants compete for and why? What do animals compete for and why? How can plants and animals be used to measure environmental change? KEY WORDS: Adaptations Stomata Carnivore Respiration Herbivore Competition Extremophiles Territory Surface area : volume ratio ASSESSMENT:

Sustainable food production B2 REVISION – Ecology Define the following; Producer: Primary Consumer: Secondary Consumer: Apex Predator: Herbivore: Carnivore: Omnivore What will happen to the snake population if the number of titmice decrease? What will happen to the other organisms if the fox population decreases? What will happen to the other organisms if the butterfly population decreases? How many food chains are in this food web? List some biotic factors that can effect and ecosystem: List some abiotic factors that can effect an ecosystem : What is biodiversity and why is it important? KEY WORDS: Non-renewable Biodiversity Distillation Industrial waste Global warming Carbon neutral Greenhouse gases Exothermic Sewage Sustainable food production Ecology Greenhouse effect Eutrophication Mycoprotein Acid Rain Biofuels Fermenters Deforestation Biogas ASSESSMENT:

B2 REVISION Organisms in their environment Physical Factor How does it affect organisms? Temperature Nutrients Amount of light Availability of water O2 and CO2 availability Key definitions: Mean: Median: Mode: Reproducible data: Valid data: Transects What is the most common type of transect? What do we use a transect for? Explain how do you use a transect Is it random? Quadrats What is a quadrat? What do we use it for? What do you do to get valid results? 8