ATI TEAS 7
Chemistry
1. When water boils, it changes from a liquid to a gas. This is an example of a:
- A. Chemical reaction
- B. Physical change
- C. Nuclear reaction
- D. Biological process
Correct answer: B
Rationale: Physical change - Boiling water involves a change in state, not the chemical composition of the molecules. Chemical reactions involve breaking and forming new bonds, which is not the case here.
2. What is the name for the process where a solid changes directly into a gas?
- A. Evaporation
- B. Sublimation
- C. Condensation
- D. Melting
Correct answer: B
Rationale: Sublimation occurs when a solid directly transforms into a gas without passing through a liquid phase.
3. She finds out that some managers have benevolent-authoritative style of management. Which
- A. Have condescending trust and confidence in their subordinates
- B. Gives economic or ego awards
- C. Communicates downward to the staff
- D. Allows decision making among subordinates
Correct answer: D
Rationale: The correct answer is D because the benevolent-authoritative style of management involves allowing decision-making among subordinates. This style combines a caring attitude towards employees with a level of authority and control. Managers who adopt this style often empower their subordinates to make decisions within a set framework, fostering a sense of autonomy and responsibility among the team. Options A, B, and C do not accurately describe the characteristics of a benevolent-authoritative management style, making them incorrect choices for this question.
4. Which organelle is responsible for packaging and secreting proteins into the extracellular space?
- A. Golgi apparatus
- B. Mitochondria
- C. Ribosomes
- D. Endoplasmic reticulum
Correct answer: A
Rationale: Rationale: A) Golgi apparatus: The Golgi apparatus is responsible for modifying, sorting, and packaging proteins into vesicles for secretion outside the cell or for use within the cell. B) Mitochondria: Mitochondria are known as the powerhouse of the cell and are responsible for generating energy in the form of ATP through cellular respiration. They are not involved in packaging and secreting proteins. C) Ribosomes: Ribosomes are responsible for protein synthesis, where they translate mRNA into proteins. They are not involved in packaging and secreting proteins into the extracellular space. D) Endoplasmic reticulum: The endoplasmic reticulum (ER) plays a role in protein synthesis and folding, but it is the rough ER specifically that is involved in synthesizing proteins that are then transported to the Golgi apparatus for further processing and packaging. The Golgi apparatus is primarily responsible for packaging and secreting proteins
5. Neurons, the functional units of the nervous system, belong to which tissue type?
- A. Epithelial tissue
- B. Connective tissue
- C. Muscle tissue
- D. Nervous tissue
Correct answer: D
Rationale: The correct answer is D: Nervous tissue. Neurons are specialized cells that transmit nerve impulses and are the primary components of the nervous system. Nervous tissue is made up of neurons and supporting cells called neuroglia. Neurons are responsible for processing and transmitting information throughout the body, making them a crucial part of the nervous system. Epithelial tissue (A) is primarily involved in covering and lining surfaces, connective tissue (B) supports and connects other tissues, and muscle tissue (C) is responsible for movement. Therefore, neurons belong to nervous tissue, which is specialized for communication and coordination within the body.
6. Which of the following minerals is important for bone health and is stored in bones by the skeletal system?
- A. Iron
- B. Sodium
- C. Calcium
- D. Magnesium
Correct answer: C
Rationale: The correct answer is C: Calcium. Calcium is essential for maintaining strong and healthy bones. It is a key mineral stored in bones by the skeletal system, where it provides structural support and strength. Adequate calcium intake is crucial for preventing bone diseases like osteoporosis and ensuring proper bone formation and density. Iron (A), Sodium (B), and Magnesium (D) are important minerals for various bodily functions but are not primarily responsible for bone health and storage in bones by the skeletal system.
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