Which of the following element is required for production of thyr

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 Multiple Choice QuestionsMultiple Choice Questions

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1.

Which of the following element is required for production of thyroxin?

  • NaCl

  • Iodine

  • Bromine

  • Fluorine


B.

Iodine

Iodine is required for the production of thyroxin. Thyroid cells are the only cells in the body that can absorb iodine. It is converted into thyroxine (T4) and triiodothyronine (T3). Body cell combine it and amino acid tyrosine to make T3 and T4.


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2.

Receptors for FSH is present on:

  • Leydig cells

  • Sertoli cells

  • Peritubular cells

  • Spermatogonium germ cells


3.

During gametogenesis in male, cell during development are termed as primary spermatocytes when they are :

  • Before meiosis - I

  • After meiosis - I

  • After meiosis - II

  • Mature sperms


4.

Neuropeptides and neurotransmitters are molecules secreted by neuron. Which statement is correct statement about neuropeptide as compare to neurotransmitter?

  • Less potent and short acting

  • More potent but short acting

  • Less potent but long acting

  • More potent and longer acting


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5.

There is small gap between two neurons at synapses. the purpose of gap is

  • unidirectional flow of information

  • reabsorption of neurotransmitter

  • Coupling of charge over membrane

  • slow down speed of propagation


6.

Which of the following is not a characteristic of phylum Chordata?

  • Pharyngeal slits

  • Amniotic egg

  • Post and tail

  • Notochord


7.

If the core body temperature of a human rise above normal, which of the following processes would be initiated sequentially for thermo‐regulation?

  • Peripheral vasodilation, increased rate of respiration, tachycardia

  • Peripheral vasodilation, increased rate of respiration, bradycardia

  • Peripheral vasodilation, decreased rate of respiration, tachycardia

  • Peripheral vasodilation, decreased rate of respiration, bradycardia


8.

During urine formation the filtration of blood at the glomerulus is

  • An active process

  • An osmotic process

  • Is a pressure- dependent physical process

  • An non-energy- mediated transport process


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9.

Which statement is not correct for blood?

  • Mature RBC is of larger size as compare to its precursor cells

  • Platelets play important role in blood clotting   

  • Neutrophils are major phagocytic cells   

  • Basophils are present in least amount  


10.

When a person enters a dark room from bright sunlight he cannot see anything for a few seconds because

  • Rhodopsin pigment of rod cells is inactivated in bright light which takes time and is activated in dark and associate with opsin protein.     

  • Scotoposin proteins of rods are denatured  

  • All Scotoposin are bound with retinal in rod cells   

  • All Scotoposin becomes non-functional in bright light     


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