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Nursing Elites

ATI TEAS 7

physics

1. Which force opposes the relative motion between surfaces in contact?

Correct answer: b

Rationale: Friction is the force that opposes motion between surfaces in contact.

2. Which of the following structures plays a crucial role in controlling the cell cycle and preventing uncontrolled cell growth?

Correct answer: A

Rationale: Rationale: - Centrioles are cylindrical structures found in animal cells that play a crucial role in organizing the spindle fibers during cell division (mitosis). They are involved in the separation of chromosomes during cell division, ensuring that each daughter cell receives the correct number of chromosomes. - Centrioles are also involved in the formation of cilia and flagella, which are important for cell motility and sensory functions. - The other structures listed in the options (nucleolus, Golgi apparatus, and endoplasmic reticulum) do not directly play a role in controlling the cell cycle and preventing uncontrolled cell growth.

3. Which of the following is a characteristic of a solution with a high viscosity?

Correct answer: c

Rationale: Solutions with high viscosity have a high resistance to flow. The other choices do not accurately describe high viscosity.

4. What is the term for a repetitive, involuntary muscle contraction that can cause pain and stiffness?

Correct answer: B

Rationale: The correct answer is B: 'Spasm.' A spasm is a sudden, involuntary muscle contraction that can cause pain and stiffness. Cramps are a type of spasm characterized by intense, localized pain and temporary muscle tightness. Tics are repetitive, involuntary movements or vocalizations. Fibrosis refers to the formation of excess fibrous connective tissue in an organ or tissue, not related to muscle contractions. Therefore, 'spasm' best fits the description provided in the question.

5. Define the term "velocity" in relation to motion.

Correct answer:

Rationale: Velocity is the rate of change of position concerning direction, unlike speed which only refers to distance traveled per unit time.

6. Which of these organs is NOT involved in the production of digestive enzymes?

Correct answer: A

Rationale: Rationale: A) Mouth: The mouth is involved in the mechanical breakdown of food through chewing and the initiation of carbohydrate digestion by the enzyme amylase in saliva, but it does not produce digestive enzymes. B) Stomach: The stomach produces gastric juices containing enzymes like pepsin that help break down proteins. C) Pancreas: The pancreas produces various digestive enzymes such as amylase, lipase, and proteases that aid in the digestion of carbohydrates, fats, and proteins. D) Small intestine: The small intestine produces enzymes such as peptidases, sucrase, lactase, and maltase that further break down proteins, carbohydrates, and fats for absorption. Therefore, the mouth is the organ that is NOT involved in the production of digestive enzymes.

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