Hi Ishika
The correct option is 1) 'Na+ reabsorption requires energy'.
Explanation
The nephron is composed of Bowman's capsule, proximal convoluted tubule, Loop of Henle and distal convoluted tubule . In distal convolutes tubule reabsorption of Na+ and water takes place which is active process i.e requires energy.
Thus, the correct answer is 'Na+ reabsorption requires energy'.
Thankyou
Question : Statement 1: Slope of demand curve is based on the percentage change in price and quantity.
Statement 2: Due to inverse relationship between price and demand, the demand curve slopes downwards.
Option 1: Both statements are true.
Option 2: Both statements are false.
Option 3: Statement 1 is true, and statement 2 is false.
Option 4: Statement 1 is false, and statement 2 is true.
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