Nursing Elites

1. Which property of matter refers to the measure of the force of gravity acting on an object?

• A. Mass
• B. Weight
• C. Density
• D. Volume

Correct answer: b

Rationale: Weight is the measure of the force of gravity acting on an object. It is calculated as mass multiplied by the acceleration due to gravity.

2. What is the purpose of the periosteum, the tough outer layer of bone?

• A. Produces red blood cells
• B. Provides protection and nourishment to bone
• C. Forms the joint surface
• D. Stores minerals

Correct answer: B

Rationale: The correct answer is B: 'Provides protection and nourishment to bone.' The periosteum is a tough outer layer of bone that serves multiple functions. It provides protection by acting as a barrier against infections and injuries. Additionally, the periosteum contains blood vessels that supply nutrients to the bone cells, aiding in bone growth, repair, and maintenance. While red blood cells are produced in the bone marrow, not in the periosteum, the periosteum's primary role is to support the overall health and integrity of the bone structure.

3. Which of the following numbers is the greatest common factor (GCF) of 12 and 18?

• A. 2
• B. 3
• C. 6
• D. 9

Correct answer: C

Rationale: The GCF is the largest number that is a factor of both 12 and 18. We can factor each number to find common factors: 12 = 2 x 2 x 3 and 18 = 2 x 3 x 3. The greatest common factor that appears in both factorizations is 6 (2 x 3).

4. Fertilization, the fusion of sperm and egg, typically occurs in which part of the female reproductive system?

• A. Ovary
• B. Fallopian tube
• C. Uterus
• D. Vagina

Correct answer: B

Rationale: The correct answer is B: Fallopian tube. Fertilization usually occurs in the fallopian tube. After ovulation, the egg is released from the ovary into the fallopian tube where it can be fertilized by sperm. The fallopian tube provides the ideal environment for fertilization to take place before the fertilized egg travels to the uterus for implantation. The other options, such as the ovary, uterus, and vagina, do not typically serve as the site of fertilization. Therefore, the fallopian tube is the correct answer in this case.

5. The outermost layer of your skin is an example of which epithelial tissue type?

• A. Simple cuboidal
• B. Stratified squamous
• C. Simple columnar
• D. Stratified columnar

Correct answer: B

Rationale: The correct answer is B: Stratified squamous. The outermost layer of the skin, known as the epidermis, is primarily composed of stratified squamous epithelium. This type of epithelial tissue is designed to protect underlying tissues from abrasion and external factors. Simple cuboidal epithelium (option A) is typically found in areas where secretion and absorption occur, like in kidney tubules. Simple columnar epithelium (option C) lines the intestines and aids in absorption. Stratified columnar epithelium (option D) is relatively rare in the body and is found in limited areas such as parts of the male urethra. Hence, option B is the best choice as it accurately reflects the specific type of epithelial tissue that forms the outer layer of the skin.

6. What is the phenomenon responsible for the mirage effect seen in deserts?

• A. Diffraction
• B. Refraction
• C. Interference
• D. Polarization

Correct answer: B

Rationale: Mirages occur due to the refraction of light by layers of air with different temperatures and densities, bending the light rays and creating the illusion of water on the horizon.

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