ATI TEAS 7
Chemistry
1. Which of the following is an example of a polymer?
- A. Methane
- B. Ethanol
- C. Polyethylene
- D. Acetic acid
Correct answer: C
Rationale: Polyethylene is a polymer, consisting of a large number of repeating ethylene units. The other choices represent small organic compounds.
2. Which force causes an object to move in a circular path?
- A. Tension force
- B. Frictional force
- C. Centripetal force
- D. Gravitational force
Correct answer: c
Rationale: Centripetal force is the force that acts towards the center of a circular path, keeping an object in circular motion.
3. What is the difference between active and passive immunity?
- A. Active immunity is short-lived, while passive immunity is long-lasting.
- B. Active immunity involves the body's own immune response, while passive immunity provides immediate protection through antibodies from another source.
- C. Active immunity only protects against bacterial infections, while passive immunity works against both bacteria and viruses.
- D. Passive immunity requires repeated vaccinations, while active immunity is a one-time process.
Correct answer: A
Rationale: The correct answer is A: "Active immunity involves the body's own immune response, while passive immunity provides immediate protection through antibodies from another source." Active immunity is long-lasting because it involves the body's immune system producing memory cells that remember specific pathogens, providing long-term protection. Passive immunity, on the other hand, is short-lived as it involves receiving pre-formed antibodies from an external source, such as through maternal transfer or injection of antibodies, which do not create memory cells for long-lasting protection.
4. After discussing the possible effects of the low patient satisfaction rate, the staff started to list
- A. Collaboration
- B. Majority rule
- C. Dominance
- D. Compromise
Correct answer: B
Rationale: The correct answer is B: 'Majority rule.' In this scenario, the staff is likely listing potential solutions or actions based on the opinion or agreement of the majority. Collaboration (A) involves working together towards a common goal, while Dominance (C) implies one person or group having control. Compromise (D) suggests finding a middle ground between different viewpoints. Majority rule best fits the situation where a decision or list of actions is being determined by what most people agree on, which is a common approach in group decision-making processes.
5. What is the name for the mixture of reactants and products present during a chemical reaction?
- A. Solution
- B. Mixture
- C. Reaction mixture
- D. Precipitate
Correct answer: C
Rationale: This mixture contains both the starting materials (reactants) and the newly formed substances (products) during the reaction process.
6. Which type of waves are capable of interference and diffraction?
- A. Longitudinal waves only
- B. Transverse waves only
- C. Electromagnetic waves only
- D. Both longitudinal and transverse waves
Correct answer: d
Rationale: Both longitudinal and transverse waves can exhibit interference and diffraction phenomena.
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