Study

Cells Revision- Year 8

  •   0%
  •  0     0     0

      Back   Restart
  • What is the function of the diaphragm on a microscope?
    To control the amount of light passing through the specimen
    To magnify the image
    To hold the slide in place
    To move the stage up and down
  • Which knob should you use first when focusing under low power?
    Fine adjustment knob
    Diaphragm
    Stage clips
    Coarse adjustment knob
  • What is the basic unit of life?
    Cell
  • What should you always do before switching to a higher magnification?
    Focus the image on low power first
  • What happens to the field of view as you increase magnification?
    It decreases
  • If you move the slide to the left, which way does the image appear to move?
    Opposite direction (right)
  • What structure controls the entry and exit of substances in a cell?
    Cell membrane
  • Which of the following is an example of an organ?
    Neuron
    Mitochondrion
    Heart
    Muscle tissue
  • What is the highest level of organization in the human body?
    Organism
  • What is the function of the nucleus?
    Controls cell activities and contains DNA
  • Which part of the microscope do you look through to see the specimen?
    Eyepiece (ocular lens)
  • What part of the microscope is used to focus the image under high power?
    Eyepiece
    Stage clips
    Fine adjustment knob
    Coarse adjustment knob
  • When carrying a microscope, you should hold it by the:
    Arm and base
  • What is the simplest level of organisation?
    Cell
  • Which type of cell transmits electrical impulses in the body?
    Nerve cells (neurons)
  • What is a group of tissues that work together to perform a specific function?
    Organ
    Organism
    Organ system
    Cell
  • What is the main function of red blood cells?
    Transport oxygen
  • What is the function of the cell wall in plant cells?
    To provide structure and support
  • What is the correct order of biological organization from smallest to largest?
    Cell → Tissue → Organ → Organ system → Organism
  • What is a characteristic of unicellular organisms?
    They carry out all life functions in a single cell
    They have multiple types of cells
    They are always visible to the naked eye
    They form tissues and organs
  • A group of similar cells that work together to perform a specific function is called:
    Tissue
  • The stomach is part of which organ system?
    Digestive system
    Circulatory system
    Nervous system
    Endocrine system
  • What is a major advantage of being a multicellular organism?
    Cannot perform complex functions
    Each cell must perform all life processes
    Only one cell type is required
    Cells can specialize for different functions
  • What is the total magnification of a microscope with a 10x eyepiece and a 40x objective lens?
    100x
    50x
    10x
    400x
  • Which organelle is found in plant cells but not in animal cells?
    Chloroplasts
    Ribosomes
    Nucleus
    Mitochondria
  • Which of the following is a unicellular organism?
    Amoeba
    Dog
    Tree
  • The skin is considered an organ because:
    It does not perform any functions
    It is made up of multiple tissue types working together
    It is part of an organ system
    It contains only one type of tissue
  • What is the main function of chloroplasts?
    Perform photosynthesis
  • Describe an organ system
    A group of organs working together for a common function
    • Your experience on this site will be improved by allowing cookies.