Science Mid-Topic- Biology

• What are the 3 principles of cell theory?

  1. All cells come from pre-existing cells.
  2. Cells are the basic building blocks for all living things.
  3. All living things are made up of one or more cell.
• What does a plant cell have that an animal cell does not?

  A cell wall, and chloroplasts
• What does the chloroplast do?

  Produce energy through photosynthesis (conversion of solar energy into chemical energy for plant), which sustains the plant growth.
• What does a red blood cell look like?

  Biconcave disc with an indent in the middle, which is not hollow.
• What is the function of the muscle cell?

  Responsible for all movements which are under voluntary control.
• What do mitochondria do?

  Produce energy for the cell from glucose
• Which organelle controls all cell activity, and is where DNA is found?

  The nucleus.
• What do ribosomes do?

  They produce new proteins for the cell to use
• 1. What is the arrow pointing to?

  The arrow is pointing to the Mitochondria.

  
• What is this arrow pointing to?

  The revolving nosepiece

  
• What is the lowest magnification for the light microscope?

  40x
• What are specialised cells?

  Cells that have specific structures and functions to carry out specific tasks in the body.
• What is the structure of the epithelial cell?

  A single, sheet-like layer
• What is the function of the epithelial cell?

  To provide an outer layer of protection.
• What order does this go (starting from cell to organism)?

  Cell - Tissue - Organ - Organ System - Organism.
• What does the coarse adjustment knob do?

  Used to focus the microscope on low power
• What is the difference between a ribosome and a mitochondrion?

  Mitochondrion produce energy from glucose, whilst ribosomes create protein.
• What does the endoplasmic reticulum do?

  Provides a network to move things from the cell membrane and back?
• Are function and structure correlated?

  Yes.
• Is this an animal or plant cell?

  Animal cell.

  
• What does the lysosome do?

  Breaks down old cell components and uses those materials.