<span>m, M\</span>
<span>is mass symbol </span>
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</span>
This is True . the reabsorption through the proximal tubule is obligatory 80% whereas water reabsorption through distal tubule is facultative but mostly through collector tubules 15 % ( under the action of aldosteron and antidiuretic hormone).
Coronary artery.....are the arteries that provide blood to the wall of heart !
<h2>
Answer:</h2>
<h3>
<em>OPTION</em><em> </em><em>B</em><em> </em><em>IS</em><em> </em><em>THE</em><em> </em><em>CORRECT</em><em> </em><em>ANSWER</em></h3>
<em> </em>
<h2>
Explanation:</h2>
<h3>Nucleocytoplasmic exchange of materials</h3>
<h3>In eukaryotic cells, the nucleus is bound by a double membrane or nuclear envelope. It possesses openings at certain intervals called as 'nuclear pore'. Nuclear pores are large protein complexes regulates the exchange of material between nucleus and cytoplasm, i.e., nucleo-cytoplasmic exchange of materials. </h3><h3 />
