ATI TEAS 7
Chemistry
1. Which of the following is a weak acid commonly found in citrus fruits?
- A. Sulfuric acid (Hâ‚‚SOâ‚„)
- B. Hydrochloric acid (HCl)
- C. Citric acid
- D. Nitric acid (HNO₃)
Correct answer: c
Rationale: Citric acid is a weak acid commonly found in citrus fruits. The other choices are strong acids.
2. What property of matter refers to the amount of space occupied by an object and is measured in cubic units?
- A. Mass
- B. Density
- C. Weight
- D. Volume
Correct answer: d
Rationale: Volume is the property that refers to the amount of space occupied by an object and is measured in cubic units such as cubic meters or cubic centimeters.
3. He likewise stresses the need for all the employees to follow orders and instructions from
- A. Scalar chain
- B. Discipline
- C. Unity of command
- D. Order
Correct answer: B
Rationale: The correct answer is B: 'Discipline.' In a business context, discipline refers to the adherence to rules, orders, and instructions to ensure smooth operations and efficiency. The concept of discipline is essential in maintaining order, consistency, and productivity within an organization. It encompasses obeying rules, following instructions, and respecting authority. While the other options like 'Scalar chain,' 'Unity of command,' and 'Order' are important principles in management, they do not directly address the importance of employees adhering to orders and instructions, which is the central focus in this question. Therefore, 'Discipline' is the most suitable answer in this context.
4. What is a mutation?
- A. A change in the DNA sequence
- B. A type of protein
- C. A normal part of the DNA replication process
- D. A harmless variation in DNA
Correct answer: A
Rationale: Rationale: A mutation is defined as a change in the DNA sequence. Mutations can occur due to various factors such as errors during DNA replication, exposure to mutagens (e.g., chemicals, radiation), or spontaneous changes. These changes can result in alterations to the genetic information carried by an organism, which can have different effects ranging from harmless variations to causing genetic disorders or diseases. Mutations are a fundamental aspect of genetic diversity and evolution. Options B, C, and D do not accurately describe what a mutation is.
5. The lymphatic system works closely with which other body system to fight infections?
- A. Respiratory system
- B. Digestive system
- C. Immune system
- D. Nervous system
Correct answer: A
Rationale: The correct answer is the Respiratory system. The lymphatic system and the respiratory system work closely together to fight infections. The respiratory system helps to filter out pathogens and other harmful substances from the air we breathe, while the lymphatic system produces and transports white blood cells (lymphocytes) that play a key role in the immune response against infections. This collaboration helps the body to defend against respiratory infections and maintain overall health.
6. An IV drip delivers 40 drops per minute, each containing 1mg of medication. How many milligrams are administered in 3 hours (180 minutes)?
- A. 360mg
- B. 720mg
- C. 7,200mg
- D. 14,400mg
Correct answer: C
Rationale: Rationale: In this scenario, we first calculated the total number of drops administered in 3 hours by multiplying the drops per minute by the total number of minutes. Then, we converted the drops to milligrams by multiplying the total drops by the amount of medication in each drop. This method ensures an accurate calculation of the total amount of medication administered over the given time period.
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