ATI RN
Nutrition And Metabolism Questions Questions
Question 1 of 5
The spinal cord consists of four regions and ___ segments.
Correct Answer: D
Rationale: The spinal cord has 31 segments: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal.
Question 2 of 5
Damage to the medulla oblongata can result in death because
Correct Answer: B
Rationale: The medulla oblongata contains vital centers regulating heart rate, breathing, and blood pressure, making damage potentially fatal.
Question 3 of 5
How does the body use triglycerides? Cholesterol?
Correct Answer: B
Rationale: triglycerides are used for ATP, insulation, padding, and vitamin absorption, while cholesterol forms hormones, bile salts, and stabilizes membranes ; others mismatch roles.
Question 4 of 5
What is a redox reaction?
Correct Answer: B
Rationale: A redox reaction involves oxidation and reduction , as per text; it's not just energy , protein breakdown , or glucose synthesis .
Question 5 of 5
What two major kinds of chemical reactions occur in the citric acid cycle, and how are these reactions indicated symbolically?
Correct Answer: B
Rationale: The citric acid cycle primarily involves oxidation reactions, where NAD⁺ and FAD are reduced to NADH and FADH₂ as electrons are transferred from substrates, and decarboxylation reactions, where CO₂ is removed (e.g., from isocitrate and α-ketoglutarate). These processes are symbolically indicated by NAD⁺/FAD (for oxidation) and CO₂ (for decarboxylation). Other options mismatch the reactions (e.g., synthesis, hydrolysis, phosphorylation, dehydration) or symbols (e.g., H₂O, O₂, ATP, P) with the cycle’s primary processes.