iron is a component of which of the following proteins responsible for transport of oxygen in the bloodstream
Logo

Nursing Elites

ATI RN

Proctored Nutrition ATI

1. Which of the following proteins is iron a component of, responsible for the transport of oxygen in the bloodstream?

Correct answer: A

Rationale: The correct answer is A: hemoglobin. Hemoglobin is the protein found in red blood cells that is responsible for carrying oxygen from the lungs to the rest of the body. Iron is a crucial component of hemoglobin, binding to oxygen and allowing for its transport. Choice B, transferrin, is involved in iron transport in the blood but not in oxygen transport. Choice C, myoglobin, is a protein found in muscle cells that stores oxygen for muscle use, not transportation in the bloodstream. Choice D, hepcidin, is a peptide hormone that regulates iron absorption in the intestines and iron distribution in the body, but it is not directly involved in oxygen transport.

2. For patients with anemia, which vitamin is crucial for the absorption of iron?

Correct answer: B

Rationale: The correct answer is Vitamin C. Vitamin C enhances the absorption of non-heme iron, which is crucial for patients with anemia. Vitamin A (Choice A) is not directly involved in iron absorption. Vitamin D (Choice C) helps with calcium absorption, not iron. Vitamin E (Choice D) does not have a significant role in iron absorption.

3. What stimulates bile secretion from the liver to the small intestine?

Correct answer: C

Rationale: Cholecystokinin (CCK) is the hormone that stimulates the release of bile from the gallbladder into the small intestine, aiding in fat digestion. Pepsin is an enzyme in the stomach that breaks down proteins into smaller peptides, not involved in bile secretion. Salivary Amylase is an enzyme in saliva that initiates starch digestion in the mouth, not related to bile secretion. Secretin is a hormone that regulates the release of gastric juice in the stomach and triggers the pancreas to neutralize stomach acid in the small intestine, but it does not stimulate bile secretion.

4. A patient with renal insufficiency should limit the intake of which of the following nutrients?

Correct answer: A

Rationale: In patients with renal insufficiency, impaired kidney function can lead to difficulty in excreting phosphorus. High phosphorus levels can result in further complications such as bone and heart problems. Therefore, limiting the intake of phosphorus is crucial. Potassium and sodium restrictions may also be necessary in renal insufficiency, but the primary concern related to nutrients is phosphorus in this scenario. Calcium, while important for bone health, does not typically need to be restricted in renal insufficiency unless there is a specific medical reason to do so.

5. The most energy-rich nutrient is:

Correct answer: B

Rationale: Fat provides 9 kcal per gram, making it the most energy-rich nutrient compared to carbohydrates and proteins, which provide 4 kcal per gram.

Similar Questions

A healthcare professional is reviewing the lab findings of a client who has Clostridium Difficile. Which of the following findings should indicate to the healthcare professional that the client is experiencing Fluid Volume Deficit?
In the US, low iron intake is often associated with?
Symptoms of irritable bowel syndrome are most likely associated with disturbed defecation, bloating, and _____.
Dietary fiber has been recommended for its possible benefits in reducing heart disease by lowering blood cholesterol. How is fiber thought to play its role in lowering blood cholesterol?
A nurse is completing a nutritional assessment of an adult female client. Which of the following findings should indicate to the nurse that the client is at an increased risk of developing cancer?

Access More Features

ATI RN Basic
$69.99/ 30 days

  • 5,000 Questions with answers
  • All ATI courses Coverage
  • 30 days access

ATI RN Premium
$149.99/ 90 days

  • 5,000 Questions with answers
  • All ATI courses Coverage
  • 30 days access

Other Courses