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Biology 44

17 Questions
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Questions and Answers
  • 1. 
    What event would be predicted by the Bohr shift effect as the amount of carbon dioxide released from your tissues into the blood capillaries increased?
    • A. 

      The amount of O2 in venous blood would decrease.

    • B. 

      The amount of Co2 in venous blood would decrease.

    • C. 

      The amount of oxygen in arterial blood would decrease.

    • D. 

      The amount of Co2 in venous blood would increase.

  • 2. 
    Which of the four muscular chambers of the human heart directly propels blood into the systemic circulation?
    • A. 

      Right ventricle

    • B. 

      Left atrium

    • C. 

      Left ventricle

    • D. 

      Right atrium

  • 3. 
    When a patient has his gallbladder removed, what food type would a doctor recommend this patient consume in lower quantities?
    • A. 

      Carbs

    • B. 

      Fats

    • C. 

      Sodium

    • D. 

      Sugar's

  • 4. 
    Gas exchange in insects takes place across the epithelium of the tracheae. The tracheal system connects to the outside air by openings called spiracles. Muscles just inside each spiracle can control the opening to minimize water loss. What would happen if the muscles inside each spiracle were unable to function?
    • A. 

      The insect would consume less water

    • B. 

      The kidney would release renin in response to the low water volume

    • C. 

      Nothing, the insect uses standard respiratory system

    • D. 

      The insect would increase water consumption.

  • 5. 
    A rabbit taken from a meadow near sea level & moved to a meadow high on a mountainside would have some trouble breathing. Why?
    • A. 

      The partial pressure of Co2 in the air at low elevations is higher than at sea level.

    • B. 

      The partial pressure of oxygen in the air at high elevations is lower than at sea level.

    • C. 

      The partial pressure of oxygen in the air at low elevation is higher than at sea level.

    • D. 

      Rabbits don't breath in wonderland.

  • 6. 
    The process of breaking down food into smaller molecules is known as ____.
    • A. 

      Consumption

    • B. 

      Digestion

    • C. 

      Synthesize

    • D. 

      Absorption

  • 7. 
    What is the importance of the mucins that are released by salivary glands?
    • A. 

      They stimulate the release of lipase to aid in the break down of fats.

    • B. 

      They release amylase to break down carbohydrates.

    • C. 

      They are glycoproteins that make food slippery enough to slide easily through the esophagus.

    • D. 

      They are glycoproteins that aid in the digestion of proteins.

  • 8. 
    Over-the-counter medications for acid reflux or heartburn block the production of stomach acid. Which of the following cells are directly affected by this medication?
    • A. 

      Parietal cells.

    • B. 

      Chief cells.

    • C. 

      Lymp cells.

    • D. 

      Blood cells

  • 9. 
    When you are jogging, your muscles are using more oxygen & releasing more carbon dioxide into the blood than when you are at home on the couch. Which of the following would occur during your jog?
    • A. 

      The heart rate would decrease

    • B. 

      Respiration would decrease

    • C. 

      Respiration would increase.

    • D. 

      This would cause hyperventilation

  • 10. 
    After a large meal the production of insulin will increase. After fasting the production of glucagon will increase.
    • A. 

      True

    • B. 

      False

  • 11. 
    Which is most likely to have mouthparts modified into long, thin, hollow extensions?
    • A. 

      Deposit feeders

    • B. 

      Fluid feeders

    • C. 

      Mass feeders

  • 12. 
    Lipids are molecules that  are absorbed from the lumen of the small intestine into epithelial cells through simple diffusion?
    • A. 

      True

    • B. 

      False

  • 13. 
    In what way does hemoglobin act as a buffer against changes in blood pH?
    • A. 

      Hemoglobin binds some of the excess ions released by cellular respiration.

    • B. 

      Does not, ph balance is maintained at 7.35-7.45.

    • C. 

      Hemoglobin binds to hco3 to decrease the ph

    • D. 

      Hemoglobin binds some of the excess protons released by carbonic acid.

  • 14. 
    Where does the chemical digestion of proteins begin?
    • A. 

      The stomach

    • B. 

      The mouth

    • C. 

      The small intestine

    • D. 

      The liver

  • 15. 
    The oxygen content of water increases linearly with increase oxygen partial pressure while the oxygen content of blood increases in a sigmoidal fashion. Why?
    • A. 

      Hemoglobin exchanges o2 for Co2

    • B. 

      Ionic bonds are formed within the tiretry protein of the hemoglobin

    • C. 

      Hemoglobin shows cooperative oxygen binding.

    • D. 

      Blood is negative pressure and therefor react with the blood to increase the sigmoidal value

  • 16. 
    Which of the following is the correct sequence of terms describing fluid movement throughout the vessels & tissues of the body, starting with the circulatory system?
    • A. 

      Blood--> blood--> interstitial fluid--> lymph

    • B. 

      Blood--> interstitial fluid--> lymph-->Interstitial fluid

    • C. 

      Interstitial fluid--> lymph--> blood

    • D. 

      Blood--> interstitial fluid--> lymph--> blood.

  • 17. 
    Which of the following mechanisms are used to regulate blood pressure in the closed circulatory system of vertebrates?
    • A. 

      Force of heart contraction

    • B. 

      Blood volume

    • C. 

      Constriction and dilation of blood vessels

    • D. 

      Release of catecholamines