Biology

• All living things are made up of tiny units called

  cells
• • The cells are so small that they can't be seen with naked eyes.
  • An instrument used to see them is the

  microscope
• A living thing that is made up of only one cell is called a

  unicellular organism
• Living things which have more than one cell are called multicellular organisms.
• what color is the iodine solution?

  yellow / brown
• why was the iodine solution added to the onion peel?

  The onion peel is colorless.
• what solution is used other than iodine ?

  methylene blue solution
• Cheek cells have

  irregular shapes
• name the parts of a cheek cell

  • nucleus
  • cell membrane
  • cytoplasm
• Name the parts of an animal cell

  • nucleus
  • cell membrane
  • cytoplasm
  • vacuole
• Name the parts of a plant cell

  • nucleus
  • cytoplasm
  • cell wall
  • cell membrane
  • large central vacuole
  • chloroplast
• What is the function of cytoplasm

  Many chemical reactions occur here.
• What is the function of the nucleus ?

  1. Controls cell activities
  2. heredity
• Function of the Central Vacuole

  Stores water food salts wastes
• A cell contains 


  a nucleus cell membrane cytoplasm
• What is the function of Chloroplast?

  Traps light from the sun for photosynthesis
• What is the function of a cell wall?

  Gives support protects and gives shapes to the plant cell
• What is a tissue?

  A tissue is a group of similar cells working together to carry out a specific function
• What is an organ?

  An organ is a group of different tissues working together to carry out a specific function
• What is an organ system?

  An organ system consists of different organs working together to carry out one function or more
• What is an ex of tissue in animals?

  Muscle tissue
• ex of tissue in plants [carries out photosynthesis]

  mesophyll tissue
• ex of organ in plants

  leaf
• What does the leaf consist of? [ work together for photosynthesis]

  epidermal tissue mesophyll tissue xylem tissue
• ex of an organ in animal

  stomach
• The stomach consists of [They work together to carry out digestion]

  glandular tissue nerve tissue muscle tissue
• Function of the cell membrane

  controls the movement of subtasks into and out of the cell
• ex of an organ system in animals

  digestive system
• What does the digestive system consist of?

  mouth stomach liver pancreas intestines
• Give 2 examples of organ system

  nervous system

  circulatory system
• examples of organ systems in plants

  shoot system and root system
• Characteristics of living things

  MRS RENG
• characteristics of living things (m)LOCO

  movement locomotion
• why do living things move?

  to search for food

  to escape from dangers

  to find shelter
• one example of movement in plants

  the bending of the shoot towards a source of light
• example of unicellular organism al

  algae
• characteristics of living things n

  nutrition
• how do animals obtain their food?

  by eating other animals or plants
• carnivore


  eats meat only
• omnivore


  eats meat and plants