Nokea
What are the two functions of the male and female reproductive organs?
- A. Production of all cells and production of hormones
- B. Production of interstitial cells and production of hormones
- C. Production of gametes and production of hormones
- D. Production of gametes and production of interstitial cells
Correct Answer: C
Rationale: The male and female reproductive organs have two primary functions: the production of gametes (sperm in males and eggs in females) and the production of hormones. Gametes are essential for sexual reproduction, while hormones play a crucial role in regulating various physiological processes in the body, such as growth, development, and reproductive functions.
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Which anatomical structure houses the terminal bronchioles?
- A. Heart
- B. Lung.
- C. Diaphysis.
- D. Femur.
Correct Answer: B
Rationale:
What is the most abundant type of cell in the epidermis?
- A. Osteocytes.
- B. Chondroblasts.
- C. Keratinocytes.
- D. Melanocytes.
Correct Answer: C
Rationale:
Which heart chamber has the thickest wall?
- A. Right atrium
- B. Left atrium
- C. Right ventricle
- D. Left ventricle
Correct Answer: D
Rationale: The left ventricle has the thickest wall of all the heart chambers because it needs to pump oxygenated blood to the entire body. Its muscular wall is thicker and more powerful compared to the other heart chambers. The right atrium receives deoxygenated blood from the body, the left atrium receives oxygenated blood from the lungs, the right ventricle pumps deoxygenated blood to the lungs, while the left ventricle pumps oxygenated blood to the body. Due to the higher workload and pressure required to push blood to the entire body, the left ventricle is the most muscular and has the thickest wall.
Which of the following are functions of the skeletal system? (Select one that does not apply.)
- A. Support the body
- B. Hemopoiesis
- C. Conduct impulses
- D. Provide protection
Correct Answer: C
Rationale: The correct answer is C, 'Conduct impulses.' The skeletal system's primary functions include supporting the body, hemopoiesis (blood cell production), and providing protection to internal organs. Conducting impulses is a function of the nervous system, not the skeletal system. The skeletal system serves as the framework for the body, enabling movement, protecting vital organs, producing blood cells, storing minerals, and supporting the overall structure of the body.
On what are macromolecules is the genetic code carried?
- A. Nucleotides
- B. Chromosomes
- C. DNA
- D. RNA
Correct Answer: A
Rationale: The genetic code is carried on nucleotides, which are the building blocks of DNA and RNA. Nucleotides contain the genetic information crucial for the functioning of organisms. While chromosomes, DNA, and RNA play roles in genetic processes, the genetic code specifically resides on nucleotides.