Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

6. Enzymes and Enzyme Kinetics

Enzymes

Biochemistry

6. Enzymes and Enzyme Kinetics

Enzymes

Previous problemNext problem

Struggling with Biochemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

The enzyme renin is secreted by the kidneys. What is its primary function?

It catalyzes the conversion of angiotensinogen to angiotensin I.

It breaks down urea into ammonia and carbon dioxide.

It converts glucose to glucose-6-phosphate.

It hydrolyzes peptide bonds in dietary proteins.

Previous problemNext problem

Verified step by step guidance

Understand the role of renin: Renin is an enzyme secreted by the kidneys, specifically by the juxtaglomerular cells, in response to low blood pressure or low sodium levels.

Identify the primary function of renin: Renin plays a key role in the renin-angiotensin-aldosterone system (RAAS), which regulates blood pressure and fluid balance.

Focus on the biochemical reaction catalyzed by renin: Renin specifically catalyzes the conversion of angiotensinogen (a protein produced by the liver) into angiotensin I, which is an inactive precursor.

Clarify the downstream effects: Angiotensin I is further converted into angiotensin II by the enzyme angiotensin-converting enzyme (ACE). Angiotensin II is a potent vasoconstrictor that helps increase blood pressure and stimulates aldosterone secretion.

Eliminate incorrect options: Renin does not break down urea, convert glucose to glucose-6-phosphate, or hydrolyze peptide bonds in dietary proteins. Its specific function is tied to the RAAS system and the conversion of angiotensinogen to angiotensin I.