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'99 bio chem Qs?? need ans..

Discussion in 'International Dental' started by praveena, Dec 2, 2005.

  1. praveena

    praveena Junior Member
    5+ Year Member

    Jul 7, 2005
    Likes Received:
    questions from 1999 Bio-chem /Physio Paper:

    140. A 0.2 mole/liter NaCl solution and a 0.2 mole/liter glucose solution are separated by a membrance that is
    impermeable to these solutes but is permeable to water. Which of the following statements is CORRECT?

    A. There will be no net movement of water to either solution.
    B. Water will go from the glucose to the saline solution.
    C. Water will go from the saline to the glucose solution.
    D. Concentration of glucose will decrease.
    E. Concentration of NaCl will increase


    146. Which of the following represents the sensory organs concerned with maintenance of skeletal muscle tonus?

    A. Sarcomeres
    B. Muscle spindles
    C. Gamma Efferents
    D. Pacinian corpuscles
    E. Golgi Tendon organs

    158. Mass movement occur in the large intenstine when food enters which of the following?

    A. Mouth
    B. Colon
    C. Stomach
    D. Pharynx
    E. Esophagus

    170. A single impulse travels down an alpha motor axon. This results in which of the following?

    A. The activation of a single motor unit
    B. The contraction of one muscle fiber
    C. A subthreshold generator potential
    D. A muscle action potential without contraction
    E. Brief repetitive firing of muscles fibers

    184. Which of the following is the LEAST effective emulsifying agent?

    A. Lecithin
    B. Bile Salt
    C. Cholic Acid
    D. Cholestrol
    E. Deoxycholic acid

    186. Glucose is reabsorbed by

    A. Facilitated diffusion in the proximal tubule only
    B. Primary active transport in the proximal tubule only
    C. Co-transport with amino acids in the proximal tubule only
    D. Secondary active transport in the proximal tubule only

    197. Which of the following explains why the digestive action of salivary amylase continues for some time after swallowing?

    A. Gastric HCl increases the digestive action of amylase
    B. Gastric mucin lubricates the bolus and assists amylase activity
    C. The amylase inside the bolus is protected from the inactivitating action of gastric HCl
    D. Water absorption by the stomach concentrates amylase and makes its action more effective
    E. Contractions of the stomach distribute amylase more every throughout the bolus

    ans plssss......
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  3. Austin1

    Austin1 Member
    7+ Year Member

    Dec 10, 2002
    Likes Received:
    186. d
    This is located in the proximal tubule. it transports glucose uphill and Na down hill which provides energy for glucose transport. :thumbup:
  4. praveena

    praveena Junior Member
    5+ Year Member

    Jul 7, 2005
    Likes Received:
    found that ans for 146 is b..muscle spindle
    are the others right??

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