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Nursing Elites

ATI TEAS 7

Anatomy

1. Negative feedback mechanisms are crucial in the endocrine system to:

Correct answer: B

Rationale: The correct answer is B: 'Maintain hormone levels within a specific range.' Negative feedback mechanisms in the endocrine system are essential for regulating hormone levels. These mechanisms work to counteract any deviations from the set point, ensuring that hormone levels remain balanced and within the optimal range for proper physiological function. Continuous hormone production (A) or constant release of hormones (C) would lead to imbalances and potential harm to the body. Disrupting communication between glands (D) would hinder the coordination necessary for maintaining homeostasis. Therefore, option B is the best choice as it highlights the critical role of negative feedback in keeping hormone levels stable and regulated.

2. What type of lens is thinner at the center than at the edges and causes light rays to diverge?

Correct answer: b

Rationale: A concave lens is thinner at the center than at the edges and diverges light rays.

3. How is work defined in terms of force and displacement?

Correct answer: d

Rationale: Work is calculated as the force applied to an object multiplied by the displacement of the object in the direction of the force.

4. Colligative properties of solutions depend on the...

Correct answer: D

Rationale: The correct answer is D: 'Number of solute particles in solution.' Colligative properties, such as boiling point elevation and freezing point depression, depend on the number of solute particles present in a solution, not on the chemical identity of the solute or the concentration of the solvent. This is because the presence of solute particles disrupts the solvent's normal behavior, affecting these properties. Therefore, the number of solute particles in solution directly influences colligative properties, making it the most accurate choice among the options provided.

5. Aromatic compounds

Correct answer: A

Rationale: The correct answer is A: 'Aromatic compounds contain a ring structure with alternating single and double bonds.' Aromatic compounds exhibit a special stability due to the delocalization of pi electrons within the ring, known as resonance. This resonance occurs because of the alternating single and double bonds in the ring structure, making them less reactive towards addition reactions compared to alkenes, which have only double bonds. This stability also makes aromatic compounds less likely to be easily broken down by water, as they are relatively inert in many chemical reactions. Therefore, aromatic compounds do contain pi (Ï€) bonds due to the presence of the alternating single and double bonds in their ring structure.

6. Which type of waves are capable of interference and diffraction?

Correct answer: d

Rationale: Both longitudinal and transverse waves can exhibit interference and diffraction phenomena.

Similar Questions

Which type of waves are capable of interference and diffraction?
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What is the role of RNA in the regulation of gene expression?
The intricate network of blood vessels responsible for transporting blood throughout the body is the:
Which of the following is a unit of power?
What is the involuntary muscle tissue found in the walls of blood vessels and organs like the stomach and intestines?

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