ATP means adenosine triphosphate. It consists of carbon, hydrogen, nitrogen, oxygen, and phorphorus, with the formula C10H16N5O13P3. Structurally it is a nucleoside made up of adenine (a nucleobase) and a ribose sugar molecule, with three phosphate groups. It transfers a phosphate group to another molecule to phosphorylate it (give it energy to get the bonds into a transition state).
Calcium is one substance that is secreted elsewhere but not in the proximal convoluted tubule.
<h3>Renal reabsorption and secretion</h3>
Renal reabsorption is defined as the movement of water and specific solutes from the renal tubule back into the plasma.
Renal secretion is defined as the process by which waste ions and hydrogen ions pass from the renal capillaries into the renal tubule to be excreted into the urine.
At the proximal convoluted tubule, calcium is reabsorbed but not secreted. Therefore, Calcium is one substance that is secreted elsewhere but not in the proximal convoluted tubule.
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Answer:
The answer is B. The most recent common ancestor.
Explanation:
Cladograms are used to illustrate relationships related to morphological and evolutive traits. So then, in a cladogram when organisms are closely related, they appear closer in the branches. Common branches and nodes mean close relationships and common ancestors on a scale of time.