Nursing Elites

1. What is the general formula for an alkyl halide?

• A. CnH2n
• B. CnH2n+2
• C. CnH2n-1X
• D. CnH2nO

Correct answer: C

Rationale: The general formula for an alkyl halide is \(C_nH_{2n-1}X\), where X represents a halogen (e.g., F, Cl, Br, I).

2. Positive integers are greater than zero. Which of the following expressions results in the largest positive number?

• A. (2 + 3)^2
• B. 5 x 7 + 2
• C. 10^2 - 4^2
• D. (8 - 1) x 3

Correct answer: C

Rationale: 10^2 - 4^2 = 100 - 16 = 84

3. Which hormone is responsible for regulating blood sugar levels and is produced by the pancreas?

• A. Insulin
• B. Glucagon
• C. Testosterone
• D. Estrogen

Correct answer: A

Rationale: The correct answer is A: Insulin. Insulin is a hormone produced by the pancreas that plays a crucial role in regulating blood sugar levels. When blood sugar levels rise after a meal, insulin is released to help cells absorb glucose for energy or storage. This process helps to lower blood sugar levels. Glucagon, the hormone mentioned in option B, is also produced by the pancreas but has the opposite effect of raising blood sugar levels when they are too low. Testosterone and estrogen, options C and D, are sex hormones and are not directly involved in regulating blood sugar levels.

4. Which part of the brain controls balance and coordination?

• A. Cerebellum
• B. Hypothalamus
• C. Occipital lobe
• D. Corpus callosum

Correct answer: A

Rationale: Rationale: The cerebellum is the part of the brain responsible for coordinating voluntary movements, balance, and posture. It receives information from the sensory systems, the spinal cord, and other parts of the brain to regulate motor movements. The hypothalamus is involved in regulating various bodily functions such as temperature, hunger, and thirst. The occipital lobe is primarily responsible for processing visual information. The corpus callosum is a structure that connects the two hemispheres of the brain and facilitates communication between them.

5. Which element is used in insulin and promotes glucose uptake into cells for energy production?

• A. Zinc
• B. Chromium
• C. Manganese
• D. Iron

Correct answer: B

Rationale: Chromium aids in insulin's function, enhancing glucose uptake by cells and regulating blood sugar levels.

6. What is the characteristic property of acids?

• A. Bitter taste
• B. Sour taste
• C. Slippery feel
• D. Sweet taste

Correct answer: b

Rationale: Acids typically have a sour taste. The other choices do not accurately describe the characteristic properties of acids.

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