Nursing Elites

1. Which structure contains the genetic material (DNA) of the cell?

• A. Cytoplasm
• B. Nucleus
• C. Cell wall (only present in plant cells)
• D. Golgi apparatus

Correct answer: B

Rationale: The correct answer is B: Nucleus. The nucleus is the organelle that contains the genetic material (DNA) of the cell. It acts as the control center of the cell, regulating gene expression and coordinating cellular activities. The cytoplasm, option A, is the jelly-like substance that fills the cell and surrounds the organelles, but it does not contain the genetic material. The cell wall, option C, is a rigid structure found in plant cells that provides support and protection, but it does not house the DNA. The Golgi apparatus, option D, is responsible for modifying, sorting, and packaging proteins for secretion, but it does not store the genetic material of the cell. Therefore, the nucleus is the structure that contains the genetic material in a cell.

2. Which type of epithelial tissue lines the inner lining of your intestines, responsible for absorption?

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

Correct answer: B

Rationale: The correct answer is B: Simple columnar. Simple columnar epithelial tissue is well-suited for absorption because of its single layer of tall, column-shaped cells with microvilli on the surface, increasing surface area for absorption. This type of tissue is found in the inner lining of the intestines where absorption of nutrients occurs. Stratified squamous epithelium is more protective and found in areas subject to wear and tear, like the skin. Stratified cuboidal and transitional epithelium are not typically involved in absorption processes. Therefore, simple columnar epithelial tissue is the most appropriate choice for lining the inner surface of the intestines for absorption.

3. Identify the preposition in the following sentence: The cat jumped over the fence.

• A. cat
• B. jumped
• C. over
• D. the

Correct answer: C

Rationale: Prepositions show the relationship between a noun or pronoun and another word in the sentence. "Over" indicates the position of the cat in relation to the fence.

4. When light reflects from a surface, what determines the angle of reflection?

• A. The material of the surface
• B. The wavelength of the light
• C. The angle of incidence
• D. The intensity of the light

Correct answer: C

Rationale: The angle of reflection is always equal to the angle of incidence according to the law of reflection, regardless of the material, wavelength, or intensity.

5. What happens to the potential energy of an object as it falls freely near the Earth's surface?

• A. Potential energy decreases
• B. Potential energy increases
• C. Potential energy remains constant
• D. Potential energy becomes zero

Correct answer: a

Rationale: As an object falls freely, its potential energy due to gravity decreases as it gets closer to the Earth's surface.

6. Square: A garden bed has a side length of 8 meters. What is its perimeter?

• A. 16m
• B. 24m
• C. 32m
• D. 64m

Correct answer: D

Rationale: Since all sides are equal, multiply the side length by 4: perimeter = 4 * side length = 4 * 8m = 32m.

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