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What is a cell?

Quiz by Anil Philip

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20 questions
Show answers
  • Q1
    What is a cell?
    A unit of measurement for volume
    A type of organelle within a larger cell
    The basic structural and functional unit of living organisms
    A small room or compartment
    30s
  • Q2
    Which of the following is a function of the cell membrane?
    Facilitating cell division
    Producing energy for the cell
    Storing genetic information
    Regulating the movement of substances in and out of the cell
    30s
  • Q3
    What is a biological membrane?
    A rigid structure providing support to plant cells
    A component of muscle tissue
    An organelle responsible for DNA replication
    A selective barrier that regulates the movement of substances in and out of a cell
    30s
  • Q4
    What are the main components of a biological membrane?
    Cholesterol and RNA
    Phospholipids and proteins
    Cellulose and enzymes
    Carbohydrates and nucleic acids
    30s
  • Q5
    What is the primary function of biological membranes?
    To synthesize proteins
    To store genetic information
    To produce energy
    To regulate the transport of substances into and out of the cell
    30s
  • Q6
    What is the fluid mosaic model of biological membranes?
    A rigid model where lipids and proteins are fixed in place
    A framework for cellular respiration
    A description of the membrane structure as a flexible layer made of lipids and proteins that can move laterally
    A model illustrating the cell's genetic material
    30s
  • Q7
    What role do proteins play in biological membranes?
    They facilitate transport, communication, and structural support
    They form the genetic material of the cell
    They serve solely as energy storage
    They create energy through photosynthesis
    30s
  • Q8
    How does the presence of cholesterol affect biological membranes?
    It stabilizes the membrane's fluidity by preventing solidification
    It makes the membrane impermeable to water
    It serves as a primary energy source for the cell
    It increases the rate of diffusion across the membrane
    30s
  • Q9
    What is the primary purpose of glycoproteins in biological membranes?
    To provide structural support for the cell
    To transport nutrients across the membrane
    To facilitate cell recognition and communication
    To act as a barrier against pathogens
    30s
  • Q10
    What is the approximate thickness of a cell membrane?
    1 to 2 micrometers
    10 nanometers
    100 to 200 nanometers
    50 nanometers
    30s
  • Q11
    What type of molecules can easily pass through the cell membrane without help?
    Ions
    Small nonpolar molecules
    Glucose
    Large polar molecules
    30s
  • Q12
    Which of the following is considered an essential ion for human physiology?
    Hydrogen
    Carbon
    Calcium
    Oxygen
    30s
  • Q13
    Which essential ion is primarily responsible for maintaining osmotic pressure and fluid balance in the body?
    Potassium
    Sodium
    Iron
    Chloride
    30s
  • Q14
    What essential ion is critical for the function of hemoglobin in transporting oxygen in the blood?
    Calcium
    Zinc
    Iron
    Magnesium
    30s
  • Q15
    Which essential ion is vital for nerve transmission and muscle function?
    Potassium
    Phosphorus
    Copper
    Sodium
    30s

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