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S4 Biology Home Learning

Home Learning resources for S4 Biology classes

National 4 Biology

 

 

 

 

National 5 Biology

  • Transport in plants home learning help.  Click here for the word bank.
  • Unit 2 Multicellular Organisms revision questions:
  1. Describe how these cells are specialised to perform a particular function:

SPERM CELL; NERVE CELL; RED BLOOD CELL; MUSCLE CELL; CILIATED EPITHELIAL CELL

ROOT HAIR CELL; PALISADE CELL

  1. What is: A TISSUE; AN ORGAN; A SYSTEM?
  2. What are stems cells? Name two types of stem cells.
  3. Describe one use of stem cell research in humans and explain an ethical issue.
  4. What are meristems? Where would you find them?
  5. Draw a diagram of the brain; label the three main parts; give the function of each part.
  6. Describe the path taken by a nerve impulse in a reflex action.
  7. Where are the following gametes produced: sperm; egg; ovule; pollen grain?
  8. What is the correct term for a fertilised egg?
  9. How many chromosomes in a:  human cell; human gamete
  10. What do the terms DIPLOID and HAPLOID mean?
  11. What do the following words mean: GENE; ALLELE; GENOTYPE; PHENOTYPE; HOMOZYGOUS; HETEROZYGOUS;
  12. What do the following words mean: VARIATION; DISCRETE VARIATION; DISCONTINUOUS VARIATION – give examples of each type of variation; how would you display data for each type of variation?
  13. What is Transpiration?
  14. What is the function of Xylem?
  15. What is the function of Phloem?
  16. What are stomata?
  17. What are Guard cells?
  18. Name three types of blood vessels; describe each blood vessel and give its function.
  19. Name the main structures associated with the lungs?
  20. What process moves gases between lungs and blood? What makes the lungs efficient at gas exchange?
  21. What is peristalsis? Describe the process of peristalsis.
  22. What process moves digested food from the small intestine to the blood?
  23. Name the structures that make up the digestive system.
  24. Describe the structure and function of a VILLUS.