ATI TEAS 7
Biology
1. 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
2. A satellite orbits the Earth at constant speed. Which force is responsible for its circular motion?
- A. Gravitational force from the Earth
- B. Thrust from the satellite's engine
- C. Friction between the satellite and the atmosphere
- D. Normal force from the Earth's surface
Correct answer: A
Rationale: This force acts towards the Earth's center, providing the centripetal force required for the satellite to move in a circle.
3. Which of the following is TRUE about functional nursing?
- A. Concentrates on tasks and activities
- B. Emphasizes use of group collaboration
- C. One-to-one nurse-patient ratio
- D. Provides continuous, coordinated and comprehensive nursing services
Correct answer: B
Rationale: The correct answer is B: "Emphasizes use of group collaboration." Functional nursing is a task-oriented approach where team members specialize in specific tasks or activities. In this model, nurses work together in groups to provide care to a larger number of patients efficiently. This differs from the one-to-one nurse-patient ratio (C) and the continuous, coordinated, and comprehensive nursing services (D). While functional nursing concentrates on tasks (A), the key feature emphasized in this care delivery model is the use of group collaboration to provide care effectively.
4. Where should a semicolon be placed in the following sentence? "He loves reading comics, playing video games, and spending time with friends"?
- A. He loves reading comics; playing video games, and spending time with friends.
- B. He loves reading comics, playing video games; and spending time with friends.
- C. He loves reading comics, playing video games and spending time with friends.
- D. No semicolon needed.
Correct answer: B
Rationale: Semicolons can join three or more items in a list, especially when the items themselves contain commas. Option (b) is the correct placement.
5. What is the product of the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH)?
- A. NaCl + H2O
- B. NaOH + HCl
- C. Na2Cl + H2O
- D. NaClO3 + H2
Correct answer: a
Rationale: The reaction between HCl and NaOH results in the formation of sodium chloride (NaCl) and water (H2O).
6. The fatty sheath that insulates some nerve fibers and speeds up signal transmission is called the:
- A. Myelin sheath
- B. Dura mater
- C. Pia mater
- D. Arachnoid mater
Correct answer: A
Rationale: The correct answer is A: Myelin sheath. The myelin sheath is a fatty layer that surrounds and insulates certain nerve fibers. It acts as an electrical insulator, speeding up the transmission of nerve impulses along the axon. This insulation helps to prevent signal loss or interference, allowing for faster and more efficient communication between neurons. The other options, B: Dura mater, C: Pia mater, and D: Arachnoid mater, are all layers of the meninges that protect the brain and spinal cord, but they do not play a role in insulating nerve fibers for signal transmission like the myelin sheath does.
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