B1.2

• What is a cell?


  smallest unit of life that can replicate independently.
• What organelles do only plant cells have?

  Permanent vacuole

  Cell wall

  Chloroplast
• Define: Permanent Vacuole


  structure contain cell sap that provides rigidity.
• Define: Chloroplast


  Contains the green pigment chlorophyll that absorbs energy from the sun for photosynthesis.
• Define: Cell wall


  Made of cellulose to strengthen and protect the cell.
• What structures do both animal and plant cells have?

  Cell membrane

  Cytoplasm

  Nucleus

  Mitochondria

  Ribosomes
• Define: Cell membrane


  Control movement of substances in and out of the cell
• Define: Cytoplasm


  Jelly-like substance in which the sub-cellular structures (organelles) are suspended.

  Where most chemical reactions take place that keep the cell alive
• Define: Nucleus


  Contains genetic info
• Define: Mitochondria


  Where aerobic respiration takes place, releasing energy for the cell.
• Define: Ribosome


  Site of protein synthesis
• Animal cell size


  10 - 30um
• Plant cell size


  10-100 um