ATI TEAS 7
Chemistry
1. Which of the following is NOT a type of intermolecular force?
- A. Hydrogen bonding
- B. Dipole-dipole interactions
- C. Ionic bonding
- D. London dispersion forces
Correct answer: C
Rationale: Ionic bonding is a type of intramolecular force, holding ions together within an ionic compound. Intermolecular forces are responsible for the interactions between individual molecules.
2. The fundamental units of structure and function in all living organisms, including humans, are termed:
- A. Muscles
- B. Organs
- C. Tissues
- D. Cells
Correct answer: D
Rationale: The correct answer is D: Cells. Cells are the fundamental units of structure and function in all living organisms, including humans. They are the building blocks of life, performing various functions necessary for an organism to survive and thrive. Muscles (A) are composed of muscle tissue, which is made up of muscle cells. Organs (B) are structures made up of different types of tissues working together. Tissues (C) are groups of cells that work together to perform specific functions within an organism. However, cells are the smallest unit of life and are responsible for carrying out all the essential processes needed for an organism to function.
3. Which word is spelled correctly?
- A. Accomodate
- B. Acquiesce
- C. Percieve
- D. Dilema
Correct answer: B
Rationale: Option B is the correct spelling for "to submit or agree without protest."
4. Ms. Castro learns that some leaders are transactional leaders. Which of the following does
- A. Focuses on management tasks
- B. Is a caretaker
- C. Uses trade-offs to meet goals
- D. Inspires others with vision
Correct answer: C
Rationale: The correct answer is C: 'Uses trade-offs to meet goals.' Transactional leaders focus on the exchange or transaction that occurs between them and their followers. They set clear expectations and goals for their followers and use rewards and punishments to motivate them. This approach involves making trade-offs to achieve desired outcomes, such as rewarding employees for meeting targets or penalizing them for not meeting expectations. Options A and B do not directly relate to transactional leadership, as it is more about goal achievement and motivation through rewards and punishments. Option D describes a transformational leader, who inspires and motivates others through a shared vision and values, which is different from the transactional leadership style described in the question.
5. What is the term for the first exposure to a specific pathogen, leading to the development of an initial immune response?
- A. Primary immune response
- B. Secondary immune response
- C. Hypersensitivity reaction
- D. Immunological tolerance
Correct answer: A
Rationale: The correct answer is A: 'Primary immune response.' The primary immune response refers to the initial encounter with a specific pathogen, which triggers the immune system to respond by producing antibodies and memory cells. This process lays the foundation for the secondary immune response, which occurs upon subsequent exposure to the same pathogen. The primary immune response is characterized by the lag time in antibody production as the immune system is mobilized to combat the new threat. In contrast, the secondary immune response is faster and more robust due to the presence of memory cells from the primary response. Hypersensitivity reactions involve an exaggerated immune response to an antigen, while immunological tolerance refers to the immune system's ability to recognize self from non-self to prevent autoimmunity.
6. Which of the following is the main organ responsible for regulating blood pressure?
- A. Heart
- B. Kidneys
- C. Adrenal glands
- D. Pituitary gland
Correct answer: B
Rationale: Rationale: The kidneys play a crucial role in regulating blood pressure through various mechanisms. One of the key ways the kidneys regulate blood pressure is by controlling the volume of blood in the body. They do this by adjusting the amount of water and sodium excreted in the urine. The renin-angiotensin-aldosterone system, which is primarily controlled by the kidneys, also plays a significant role in blood pressure regulation. This system helps to maintain blood pressure by regulating blood volume and systemic vascular resistance. While the heart, adrenal glands, and pituitary gland are involved in various aspects of the cardiovascular and endocrine systems, the kidneys are the main organ responsible for regulating blood pressure.
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