Question

Question 38 1 pts What is an important role of the Nat/K+ ATPase? It actively transports T3 and T4 into follicular cells It maintains the sodium gradient across the plasma membrane It cotransports glucose and sodium into small intestinal epithelial cells O It is responsible for the effective refractory period in cardiac muscle

Answer 1

Answer :- 38) sodium potassium pump is present on the cell membrane that transfer 3 sodium out of the cell and 2 potassium ions inside the cell . This result in the formation of a negative charged species inside the cell and positive outside the cell . The sodium gradient is maintained by the use of energy the form of ATP. ATP is hydrolyzed into ADP and inorganic phosphate which result in the release of large amount of energy . This energy is used in the transportation . This gradient is very important for the stimulation of the cell for a particular response.  

Hence , option 2 is the correct answer .

39) They are converted to triglyceride then transported out . Express in the endoplasmic reticulum of the enterocytes. It takes place through the glycerol phosphate pathway . Glycerol is converted into glycerol 3 phosphate , then it is converted into lysophosphatidic acid , then it is converted into phosphatidic acid . Phosphatidic acid is converted into diglycerol . Diglycerol is converted into triglycerol .

Hence , 4 is the correct answer .

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