ATI TEAS 7
Chemistry
1. A common indicator used to distinguish between acidic and basic solutions is:
- A. Methyl orange
- B. Phenolphthalein
- C. Universal indicator
- D. All of the above are common indicators.
Correct answer: B
Rationale: Phenolphthalein turns pink in basic solutions and remains colorless in acidic solutions
2. Which of the following terms refers to a muscle that lengthens while another muscle contracts to produce movement?
- A. Synergist
- B. Agonist
- C. Antagonist
- D. Flexor
Correct answer: C
Rationale: The correct answer is C: Antagonist. In muscle physiology, an antagonist refers to a muscle that lengthens while another muscle contracts to produce movement. This relationship allows for smooth and coordinated movement by controlling the action of the agonist muscle. For example, when you bend your arm, the biceps muscle (agonist) contracts to flex the arm while the triceps muscle (antagonist) lengthens to allow for this movement. Synergists assist the agonist muscle in performing a movement, while flexors are a type of muscle that decreases the angle between bones at a joint. Therefore, the antagonist best fits the description of a muscle that lengthens while another muscle contracts.
3. Two coherent light waves with a slight phase difference interfere. What determines the resulting intensity of the combined wave?
- A. The individual intensities of the waves
- B. The wavelength of the waves
- C. The distance between the waves
- D. The color of the waves
Correct answer: A
Rationale: The intensity of the resulting wave depends on the individual intensities and the phase difference between the interfering waves. Constructive interference leads to higher intensity, while destructive interference leads to lower intensity.
4. On the other hand, Ms. Castro notices that the Chief Nurse Executive has charismatic
- A. Possesses inspirational quality that makes followers gets attracted of him and regards
- B. Acts as he does because he expects that his behavior will yield positive results
- C. Uses visioning as the core of his leadership
- D. Matches his leadership style to the situation at hand.
Correct answer: D
Rationale: The correct answer is D because matching leadership style to the situation at hand is a key aspect of effective leadership. Being able to adapt and adjust leadership approaches based on the specific circumstances and needs of a situation can lead to better outcomes and success. In this scenario, the Chief Nurse Executive's ability to tailor his leadership style to different situations is likely to contribute to his effectiveness in managing various challenges and leading the team effectively.
5. What is the relationship between work and kinetic energy?
- A. Work is the cause of kinetic energy
- B. Kinetic energy is the cause of work
- C. Work and kinetic energy are the same
- D. Work and kinetic energy are unrelated
Correct answer: a
Rationale: Work done on an object can change its kinetic energy, either increasing or decreasing it.
6. Testosterone is a crucial hormone in the male reproductive system. What is its primary function?
- A. Egg production
- B. Sperm production and development
- C. Regulation of the menstrual cycle
- D. Milk production
Correct answer: B
Rationale: The correct answer is B: Sperm production and development. Testosterone is a hormone primarily produced in the testes and is essential for the development of male reproductive tissues, including the testes and prostate. It plays a key role in the production of sperm cells (spermatogenesis) and the development of secondary sexual characteristics in males, such as facial hair and muscle mass. Testosterone is not involved in egg production (A), regulation of the menstrual cycle (C), or milk production (D) as these are functions associated with female reproductive hormones.
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