Which Step in Urine Formation Occurs as Molecules and Ions

question 70

Multiple Choice

Which step in urine formation occurs as molecules and ions are both passively and actively moved from the nephron into the blood of the peritubular capillary network?

• A) glomerular filtration
• B) tubular reabsorption
• C) creatinine production
• D) tubular secretion
• E) filtration of small molecules into glomerular filtrate

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Definitions:

Citric Acid Cycle

A series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.

Acetyl-CoA Formation

A crucial metabolic process in which acetyl-CoA is produced from carbohydrates, fats, and proteins and is used in the Krebs cycle for energy production.

Electron Transfer Phosphorylation

A process in cellular respiration where electrons are transferred through a series of protein complexes, resulting in the generation of ATP.

Intermembrane Space

The region located between the inner and outer membranes of a mitochondrion or a chloroplast, involved in various cellular processes.