Nokea
A defining characteristic of malignant (oncrous) cells is:
- A. they cannot spread to other tissues or organs
- B. they can invade healthy cells, tissues, and organs
- C. they are normally a health risk
- D. none of the above
Correct Answer: B
Rationale: Malignant (cancerous) cells can invade healthy cells, tissues, and organs through tumor formation and metastasis, unlike benign cells which do not spread.
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The best indicator of fluid volume changes in the body is:
- A. Skin dryness
- B. weight changes
- C. Blood pressure
- D. pulse rate
Correct Answer: B
Rationale: Changes in weight are the best indicator of fluid volume changes in the body, as they directly reflect fluid gain or loss.
The best way for an individual to maintain acid-base balance is to
- A. avoid or quit smoking
- B. avoid or quit smoking
- C. quit smoking and quit smoking
- D. quit smoking and quit smoking
Correct Answer: D
Rationale: Maintaining a healthy lifestyle, including quitting smoking, regular exercise, and a healthy diet, helps prevent conditions like COPD and type-2 diabetes, which can disrupt acid-base balance.
The process to control cellular growth, replication, and differentiation to maintain homeostasis is called:
- A. cellular regulation
- B. cellular impairment
- C. cellular reproduction
- D. cellular tumor
Correct Answer: A
Rationale: Cellular regulation is the term used to describe both the positive and negative aspects of cellular function, ensuring proper growth, replication, and differentiation.
Immunity which occurs when antibodies are passed from the mother to the fetus through the placenta or through breast milk is called:
- A. natural passive
- B. artificial active
- C. natural active
- D. artificial passive
Correct Answer: A
Rationale: Natural passive immunity occurs when antibodies are transferred from the mother to the fetus via the placenta or breast milk, providing temporary protection.
Specialized cells that circulate in the body to promote clotting are called:
- A. anticoagulants
- B. platelets
- C. embols
- D. platelets
Correct Answer: D
Rationale: Platelets are specialized cells that promote clotting by forming a protein-based clot to prevent excessive bleeding. The option 'embols' is likely a typo for emboli, which are not cells.