cell organisation

• what is a group of organs working together to performa particular function called?

  an organ system
• true or false? a tissue is a group of cells of only one type, which work together to perform a function.

  false. a tissue doesn't have to be made up of only one cell type, it can include more than one type of cell.
• what is an organ?

  A group of tissues that work together to perform a specific function in the body.
• put the following components in order of size from smallest to largest


  lungs, epithelial cell, respiratory system, epithelial tissue. ORDER = epithelial cell, epithelial tissue, lungs, respiratory system.
• what is the roll of the digestive system?

  the digestive system breaks down and absorbs food
• when does differentiation occur?


  it occurs during the development of a multicelluar organ
• what are some examples of tissues?

  muscular tissue, glandular tissue, epithelial tissue.
• what is the digestive system made up of?

  glands, stomach, small intestine, liver, large intestine.
• glands (the pancreas and salivary glands) which produce digestive juices.
• the stomach and small intestine digest food.
• the liver produces bile.
• the small intestine absorbs soluble food molecules.
• the large intestine absorbs water from undigested food, leaving faeces.
• what is a multicellular organism?

  a living thing made up of many cells that are all different from each other.
• what is a specialised cell?

  a cell that has undergone cell differentiation and now performs specific functions that benefit the organism