Nursing Elites

1. The spleen, an organ associated with the lymphatic system, plays a crucial role in:

• A. Regulating blood sugar levels
• B. Filtering blood and destroying old red blood cells
• C. Producing digestive enzymes
• D. Secreting hormones

Correct answer: B

Rationale: The correct answer is B: 'Filtering blood and destroying old red blood cells.' The spleen is part of the lymphatic system and acts as a blood filter, removing old or damaged red blood cells and helping to fight infections. It does not play a role in regulating blood sugar levels (A), producing digestive enzymes (C), or secreting hormones (D). Understanding the function of the spleen in filtering blood and removing old red blood cells is crucial for grasping its role in maintaining overall health and immunity.

2. What is the primary factor that determines whether a solute will dissolve in a solvent?

• A. Temperature
• B. Pressure
• C. Molecular structure
• D. Particle size

Correct answer: c

Rationale: The molecular structure of the solute and solvent plays a key role in determining solubility. The other choices may influence solubility but are not the primary determining factor.

3. Which of these organisms belongs to the kingdom Protista?

• A. Coral
• B. Yeast
• C. Euglena
• D. Mushroom

Correct answer: C

Rationale: Rationale: A) Coral belongs to the kingdom Animalia, specifically in the phylum Cnidaria. B) Yeast belongs to the kingdom Fungi. C) Euglena is a unicellular organism that belongs to the kingdom Protista. It is a type of protist that has characteristics of both plants and animals. D) Mushroom belongs to the kingdom Fungi. Therefore, among the options provided, only Euglena belongs to the kingdom Protista.

4. What are the three main types of RNA?

• A. Messenger RNA (mRNA), ribosomal RNA (rRNA), and transfer RNA (tRNA)
• B. DNA, RNA, and protein
• C. Adenine, guanine, cytosine, and thymine
• D. Deoxyribose, ribose, and phosphate

Correct answer: A

Rationale: Rationale: - Messenger RNA (mRNA) carries genetic information from the DNA in the nucleus to the ribosomes in the cytoplasm for protein synthesis. - Ribosomal RNA (rRNA) is a structural component of ribosomes, which are the cellular machinery responsible for protein synthesis. - Transfer RNA (tRNA) is responsible for bringing amino acids to the ribosome during protein synthesis. Options B, C, and D are incorrect: - Option B lists DNA, RNA, and protein, which are biomolecules but not the three main types of RNA. - Option C lists nitrogenous bases (adenine, guanine, cytosine, and thymine) found in DNA, not types of RNA. - Option D lists components of nucleotides (deoxyribose, ribose, and phosphate), which are building blocks of nucleic

5. Which part of the male urinary system is responsible for producing seminal fluid?

• A. Bladder
• B. Urethra
• C. Prostate gland
• D. Kidney

Correct answer: C

Rationale: The correct answer is C: Prostate gland. The prostate gland is responsible for producing seminal fluid, which is a milky fluid that nourishes and protects sperm. The bladder stores urine, the urethra is a tube that carries urine from the bladder out of the body, and the kidney filters waste products from the blood to produce urine. The prostate gland, located beneath the bladder, plays a crucial role in male reproductive health by contributing to semen production. Understanding the functions of each part of the male urinary system is important for comprehending reproductive anatomy and physiology.

6. What happens to the acceleration of an object when the force acting on it is increased, assuming the mass remains constant?

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

Correct answer: a

Rationale: According to Newton's second law (F = ma), if mass is constant and force increases, acceleration also increases.

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