Nursing Elites

1. Which property describes a substance's resistance to flow?

• A. Density
• B. Viscosity
• C. Conductivity
• D. Reactivity

Correct answer: b

Rationale: Viscosity refers to a substance's resistance to flow. Substances with high viscosity flow slowly, while those with low viscosity flow more easily.

2. Identify the article in the following sentence: The delicious cake was enjoyed by everyone at the party.

• A. cake
• B. was
• C. the
• D. enjoyed

Correct answer: C

Rationale: : Articles ("a," "an," and "the") indicate specificity of a noun. "The" specifies that there is one particular cake being discussed.

3. Which vitamin is essential for collagen production, a key component of connective tissues?

• A. Vitamin A
• B. Vitamin C
• C. Vitamin D
• D. Vitamin E

Correct answer: B

Rationale: The correct answer is B: Vitamin C. Vitamin C is essential for collagen production, which is a key component of connective tissues. Collagen is a protein that provides structure and strength to various tissues in the body, including skin, bones, and tendons. Vitamin C plays a crucial role in the synthesis of collagen by acting as a cofactor for enzymes involved in collagen formation. Deficiency in Vitamin C can lead to impaired collagen production, resulting in weakened connective tissues and potential health issues like scurvy. While Vitamin A, D, and E are important for various bodily functions, Vitamin C specifically stands out for its vital role in collagen synthesis.

4. Diabetic nephropathy, a complication of diabetes, affects the:

• A. Ureters
• B. Bladder
• C. Urethra
• D. Nephrons

Correct answer: D

Rationale: The correct answer is D: Nephrons. Diabetic nephropathy is a type of kidney disease that occurs as a complication of diabetes. It specifically affects the nephrons, which are the functional units of the kidneys responsible for filtering waste and excess fluids from the blood to produce urine. Damage to the nephrons can lead to kidney failure and other serious complications in individuals with diabetes. Therefore, understanding the impact of diabetes on the nephrons is crucial for managing diabetic nephropathy effectively.

5. Which hormone, produced by the pancreas, is released in response to low blood sugar levels and stimulates the release of glucose into the bloodstream?

• A. Insulin
• B. Glucagon
• C. Cortisol
• D. Thyroxine

Correct answer: b

Rationale: The correct answer is B: Glucagon. Glucagon is a hormone produced by the pancreas that is released in response to low blood sugar levels, also known as hypoglycemia. When blood sugar levels drop, glucagon acts to stimulate the liver to release stored glucose into the bloodstream, helping to raise blood sugar levels back to a normal range. Insulin, on the other hand, is released in response to high blood sugar levels and helps to lower blood sugar by promoting the uptake of glucose by cells. Cortisol is a stress hormone produced by the adrenal glands, and thyroxine is a hormone produced by the thyroid gland that regulates metabolism. Therefore, glucagon is the hormone specifically responsible for stimulating the release of glucose into the bloodstream in response to low blood sugar levels.

6. Which organelle is responsible for the final stages of protein modification and packaging for secretion in animal cells?

• A. Rough endoplasmic reticulum (RER)
• B. Smooth endoplasmic reticulum (SER)
• C. Ribosomes
• D. Golgi apparatus

Correct answer: D

Rationale: The Golgi apparatus is responsible for the final stages of protein modification and packaging for secretion in animal cells. After proteins are synthesized in the rough endoplasmic reticulum (RER) and modified in the Golgi apparatus, they are packaged into vesicles for secretion. The smooth endoplasmic reticulum (SER) is involved in lipid and carbohydrate metabolism, while ribosomes are responsible for protein synthesis on the RER. Therefore, the Golgi apparatus is the correct organelle for the final processing and packaging of proteins for secretion in animal cells.

Similar Questions