Nokea
The four phases of cell division all occur in which process?
- A. diffusion.
- B. mitosis.
- C. osmosis.
- D. filtration.
Correct Answer: B
Rationale: During mitosis, the cell goes through four phases: prophase, metaphase, anaphase, and telophase.
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Which are the smallest living components in our body?
- A. Cells
- B. Organs
- C. Electrons
- D. Osmosis
Correct Answer: A
Rationale: Cells are considered to be the smallest living units of structure and function in our body.
Active transport in the movement of ions and other water-soluble particles across cell membranes requires that the body uses which process?
- A. rapid filtration.
- B. charged diffusion.
- C. a chemical pump.
- D. osmosis.
Correct Answer: C
Rationale: Active transport of ions and other water-soluble particles of the cell membrane require a chemical pump, such as insulin, to move glucose into the cell.
How are the thoracic and abdominal cavities separated?
- A. By the pleura
- B. By the diaphragm
- C. By the sagittal plane
- D. By the peritoneum
Correct Answer: B
Rationale: The diaphragm (a muscle directly beneath the lungs) separates the ventral cavity into the thoracic (chest) and abdominal cavities.
The nurse clarifies that the three functions of epithelial tissue are protection, , and secretion.
Correct Answer: absorption
Rationale: The function of epithelial tissue is protection by covering the body and preventing invasion; absorption by absorbing material; and secretion by secreting mucus to line and moisten the body surfaces.
Which is the most complex structural level of organization of the body?
- A. Body as a whole
- B. Cellular
- C. Organs
- D. Chemical
Correct Answer: A
Rationale: The structural levels of organization progress from the least complex (chemical) through cells, tissues, organs, systems to the most complex (the body as a whole).