Exam Q's

• Name the process of asexual reproduction in yeast.

  budding
• Outline the process of asexual reproduction in yeast.

  • mitosis
  • swelling / bulge, in (surface of) the cell
  • nucleus moves into, swelling / bulge / bud
  • idea that, bulge / bud, nips / pinches / breaks off / cleaves
  • uneven distribution of cytoplasm
• Even when the environmental conditions are perfect, one yeast cell rarely produces the calculated number of potential new cells. Suggest why the reproductive potential of the yeast cell is not reached.

  • new bud cannot occur, on / close to, old scar
  • not enough space between scars for another bud
  • yeast cell not a true sphere
  • (gene) mutation / DNA damage
• Describe how the cells in a multicellular organism are organised.

  • cells differentiate/ specialise
  • groups of cells form tissues
  • groups of tissues form organs
  • groups of organs form organ systems
  • group of cells / tissues / organs / organ systems, work together / interact
• Name the type of cell division that occurs in asexual reproduction.

  mitosis
• Before the division of the nucleus of a cell, the genetic material must replicate. Explain why this is essential.

  • cells, genetically identical / have same DNA
  • so both daughter cells receive a full copy
• Explain what is meant by a homologous pair of chromosomes.

  • one maternal and one paternal
  • carry same genes
  • carry, same / different, alleles
  • same / similar, length
  • centromere in same position
  • pair up in meiosis / form bivalent
• State what is meant by the term tissue.


  a, group collection, of cells specialised too perform a function
• Name two parts of a plant where meristematic tissue can be found.

  1. tip of root
  2. cambium