Bio IB Topic 6.5-6

10 Questions | Total Attempts: 105

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Biology Quizzes & Trivia

Questions and Answers
  • 1. 
      Which structure is responsible for passing messages directly to effector organs? 
    • A. 

      A.

    • B. 

      B.

    • C. 

      C.

    • D. 

      D.

  • 2. 
      After depolorization what happens to restore the resting potential? 
    • A. 

      Sodium channels open and sodium ions diffuse out of the neuron

    • B. 

      Potassium channels open and potassium ions diffuse into the neuron

    • C. 

      Potassium channels open and potassium ions diffuse out of the neuron

    • D. 

      Sodium channels open and sodium ions diffuse into the neuron

  • 3. 
      Which cells secrete insulin? 
    • A. 

      Beta-cells of the pancreas

    • B. 

      Cells of the liver

    • C. 

      Alpha-cells of the pancreas

    • D. 

      Epithelial cells of the intestine

  • 4. 
      Which organ secretes FSH (follicle-stimulating hormone)? 
    • A. 

      Ovary

    • B. 

      Testis

    • C. 

      Pituitary gland

    • D. 

      Placenta

  • 5. 
      In the menstrual cycle in humans, which hormone causes the wall of the follicle to develop after ovulation and to secrete more progesterone? 
    • A. 

      Estrogen

    • B. 

      FSH

    • C. 

      LH

    • D. 

      Oxytocin

  • 6. 
      What is the role of active transport in the transmission of nerve impulses by neurones? 
    • A. 

      Propagates an action potential by pumping sodium ions across the membrane out of the neurone.

    • B. 

      Propagates an action potential by pumping sodium ions across the membrane into the neurone.

    • C. 

      Initiates the action potential needed for the transmission of an impulse by pumping calcium ions out of the endoplasmic reticulum.

    • D. 

      Establishes the resting potential needed for the transmission of an impulse by pumping sodium and potassium ions across the membrane.

  • 7. 
      What are responsible for the lowering of blood glucose levels? I. Beta-cells in the pancreas II. Insulin molecules III. Alpha-cells in the pancreas 
    • A. 

      II only

    • B. 

      I and II only

    • C. 

      II and III only

    • D. 

      I, II and III

  • 8. 
      How can testis tissue be distinguished from ovary tissue, when seen using a light microscope? 
    • A. 

      Testis tissue has a layer of muscle fibres and ovary tissue does not.

    • B. 

      Testis tissue is cooler than ovary tissue.

    • C. 

      Testis tissue contains tubules and ovary tissue does not.

    • D. 

      Testis tissue contains pain receptors and ovary tissue does not.

  • 9. 
      The levels of hormones vary during the menstrual cycle in women. Each hormone reaches its maximum level at a different time in the cycle. In what sequence do the hormones reach their maximum level, if the cycle begins at the start of menstruation? 
    • A. 

      LH, progesterone, FSH, estrogen

    • B. 

      FSH, progesterone, LH, estrogen

    • C. 

      LH, estrogen, FSH, progesterone

    • D. 

      FSH, estrogen, LH, progesterone

  • 10. 
      How is in vitro fertilization different from natural fertilization in humans? 
    • A. 

      In vitro fertilization involves artificial injection of sperm into the uterus

    • B. 

      In vitro fertilization only involves one parent

    • C. 

      In vitro fertilization happens outside the body

    • D. 

      In vitro fertilization uses stem cells instead of eggs

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