Question

1. Sodium reabsorption is under hormonal control throughout the length of the tubule. (True or false?)

2. Glucose and amino acids are reabsorbed by secondary active transport. (True or false?)

Answer 1

1. True
2. False

Step-by-step explanation:

1.True. Sodium reabsorption in the renal tubule is indeed under hormonal control throughout its length. Hormones such as aldosterone and antidiuretic hormone (ADH) play a role in regulating the reabsorption of sodium in different parts of the tubule.

2.False. Glucose and amino acids are primarily reabsorbed by secondary active transport in the renal tubule. The process involves utilizing the electrochemical gradient created by the active transport of sodium ions to facilitate the cotransport of glucose and amino acids across the tubular epithelial cells. This mechanism allows for the reabsorption of these important nutrients back into the bloodstream.