𝒸ℯ𝓁𝓁𝓈

• What is the platform on a microscope where the slide is placed called?

  Stage
• What is the function of the focus knob on a microscope?

  To adjust the clarity of the image
• What is the name of the lens nearest the slide?

  Objective lens
• What is the liquid added to a slide to make a cell more visible called?

  Stain
• What is the function of the nucleus in a cell?

  Controls cell activities
• What structure controls what substances enter and exit the cell?

  Cell membrane
• Name three structures that are only found in a plant cell.

  Cell wall, chloroplasts, vacuole
• Where is the site of photosynthesis in a plant?

  Chloroplasts
• What is the function of the cytoplasm in a cell?

  Site of chemical reactions
• What does the term "specialised cells" mean?

  • Cells suited to their function
  • Adapted for specific tasks
• Give an example of a specialised cell and explain how it is suited to its function.

  Sperm cell; has a tail to swim
• What is DNA?

  Controls cell activities and inherited characteristics
• Where is DNA found in a cell?

  Nucleus
• Where do inherited characteristics come from?

  50% from each parent
• Give two examples of features that are inherited from parents.

  Eye colour, blood group
• Give two examples of features that are not inherited.

  Scars, language spoken
• What does the term "variation" mean?

  The differences between members of a species
• Why do living things need energy? Give two reasons.

  Growth and repair
• What is the name of the process that releases energy from food?

  Respiration
• Write down the full word equation for respiration.

  Glucose + oxygen → carbon dioxide + water + energy
• How can you measure the energy value of different foods?

  Burn it
• State a current use of cells in science today.

  Grow new organs
• Give one ethical issue of stem cells.

  Repair damaged heart cells