ATI TEAS 7
Biology
1. What is the name of the white blood cells that attack foreign invaders?
- A. Phagocytes
- B. Lymphocytes
- C. Platelets
- D. Red blood cells
Correct answer: A
Rationale: Rationale: Phagocytes are a type of white blood cell that plays a crucial role in the immune system by engulfing and digesting foreign invaders such as bacteria, viruses, and other harmful substances. They are part of the body's innate immune response and are essential for protecting the body against infections. Lymphocytes, on the other hand, are another type of white blood cell involved in the adaptive immune response, producing antibodies and coordinating immune responses. Platelets are cell fragments involved in blood clotting, while red blood cells are responsible for carrying oxygen to tissues.
2. What is the scientific unit used to measure the radioactivity of a substance?
- A. Becquerel (Bq)
- B. Joule (J)
- C. Newton (N)
- D. Kelvin (K)
Correct answer: A
Rationale: Becquerel measures the number of nuclear decays per second in a radioactive sample.
3. How is the density of a substance calculated?
- A. Mass / Volume
- B. Volume / Mass
- C. Mass x Volume
- D. None of the above
Correct answer: A
Rationale: Density is the mass per unit volume of a substance.
4. What is the general formula for an alkene?
- A. CnH2n+2
- B. CnH2n
- C. CnH2n-2
- D. CnH2n+1
Correct answer: B
Rationale: The general formula for an alkene is \(C_nH_{2n}\), indicating the presence of a double bond between carbon atoms.
5. A bag contains 5 red marbles and 7 blue marbles. If you draw a marble without looking, what is the probability it will be red?
- A. 1/4
- B. 1/3
- C. 1/2
- D. 2/3
Correct answer: A
Rationale: Divide the number of red marbles (5) by the total number of marbles (12) to get 1/3 probability.
6. Stephanie is a new Staff Educator of a private tertiary hospital. She conducts orientation
- A. Organizational structure
- B. Policy
- C. Job description
- D. Manual of procedures
Correct answer: D
Rationale: The correct answer is D, 'Manual of procedures.' During orientation, Stephanie as a Staff Educator would likely refer to the manual of procedures to provide new employees with detailed instructions on how to perform their job duties. This manual outlines the specific procedures, protocols, and guidelines that employees are expected to follow within the organization. It serves as a valuable resource for new hires to understand the standard operating procedures and expectations within the hospital setting, making it a crucial document to reference during orientation.
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