biology

• How many cells do unicellular organisms have?

  One
• Does a prokaryotic cell have a nucleus?

  No
• Does a eukaryotic cell have a nucleus?

  Yes
• Is a prokaryotic cell unicellular or multicellular?

  Unicellular
• Is a eukaryotic cell unicellular or multicellular?


  Multicellular
• What does the nucleus do?

  Controls the activity of the cell
• What does the cell membrane do?

  Controls what enters and leaves the cell
• What does a cell wall do?

  Protects the cell
• Where does respiration occur in a cell?

  Mitochondria
• Where does protein synthesis occur in a cell?

  Ribosome
• What does the vacuole in a cell do?

  Keeps the cell turgid
• What does the chloroplast MAKE in a cell?

  Proteins
• In what part of a cell do most chemical reactions occur?

  Cytoplasm
• What type of cells are bacteria?

  Prokaryotic
• What is a specialised cell?

  A cell that performs a specific function
• What are stem cells?

  Unspecialised cells that can turn into other cell types
• True or false - We need new cells to repair tissues

  True
• True or false - We need new cells to make us be able to digest food

  False
• What is the main reason that we need new cells?

  Growth and repair
• What is a chromosome?

  A small particle of DNA found within a coil
• What is diffusion?


  The movement of particles from an area of high concentration to an area of low concentration
• True or false - Diffusion can happen in a solution or in a gas


  True
• True or false - Diffusion can happen in a solid

  False
• What is one adaptation of the root hair cell which allows it to take in nutrients?

  Large surface area
• What is an organ system?


  A group of organs
• What is an example of an organ system?

  The circulatory system
• What can the body turn food into?


  Nutrients
• Define osmosis


  The movement of molecules from an area of higher concentration to an area of lower concentration through a partially permeable membrane
• Define active transport


  The movement of particles from an area of lower concentration to an area of higher concentration through a partially permeable membrane with a high concentration gradient