Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Genome (book) wikipedia , lookup
Biology and consumer behaviour wikipedia , lookup
Hybrid (biology) wikipedia , lookup
Population genetics wikipedia , lookup
Genetic drift wikipedia , lookup
Genetic engineering wikipedia , lookup
Dominance (genetics) wikipedia , lookup
History of genetic engineering wikipedia , lookup
REVISION FOR B2 EXAM There are 14 questions stuck up around the room. Working in pairs find them and answer with appropriate levels of detail. (At least 6 points per question!) Bring your written answer to my desk for marking and target setting. Targets must be met and approved before you can move on to the next question. CHALLENGE – who will find and answer the most questions??? 1. Stem cells can be taken from spare embryos from IVF, created from adult cells or extracted from the umbilical cord blood of new born babies. Evaluate the usefulness of each type of stem cell and discuss the ethical implications of their use. 2. New species can arise from existing species. This is called speciation. Explain how speciation can occur. 3. Compare and contrast mitosis and meiosis. Include number of divisions, location, purpose and results. 4. What is photosynthesis? Describe and explain 3 limiting factors and their effect on rate of photosynthesis. 5. Compare and contrast the two types of respiration in mammals – include word equations, efficiency and effects on the body. 6. What are enzymes? Explain how they work and what can affect their action. 7. How could you measure the number of dandelions on the school field? How could you measure the distribution of dandelions from the edge of the field to the centre? Hint: these are two different methods. 8. What are isomerase, protease and lipase? How are they used in the food and chemical industry? 9. Define extinction and explain how a species can become extinct. 10. •Name a genetic disorder which is controlled by a dominant allele and one by a recessive allele. •Use a punnet square to predict whether future offspring will inherit a recessive disorder whether both parents are carriers. •Draw another punnet square to predict whether future offspring will inherit a dominant genetic disorder where the father is heterozygous for the condition and the mother homozygous with the ‘normal’ allele. 11. Plant growers can give their plants the best conditions for growth by controlling the environment. How could gardeners adapt a greenhouse to grow the biggest crop of tomatoes? Justify your choices with science. 12. Compare and contrast animal, plant, bacteria and yeast cells. Include information about genetic material, organelles, and structure. 13. What is diffusion? How can the rate of diffusion be altered? Give (and explain) examples of how diffusion is utilised in plant and animal cells? 14. Describe and explain the effect of exercise on the human body.