ATI TEAS 7
Biology
1. Which of the following is NOT a method of sterilization?
- A. Autoclave
- B. UV light
- C. Chemical disinfectants
- D. Boiling water
Correct answer: D
Rationale: Rationale: A) Autoclave: An autoclave is a method of sterilization that uses high pressure and steam to kill microorganisms, making it an effective way to sterilize equipment and materials. B) UV light: UV light is a method of sterilization that damages the DNA of microorganisms, preventing them from reproducing and causing infections. C) Chemical disinfectants: Chemical disinfectants are used to kill or inactivate microorganisms on surfaces, but they may not always achieve sterilization, which is the complete destruction of all microorganisms. D) Boiling water: Boiling water is a method of disinfection rather than sterilization. While boiling water can kill many microorganisms, it may not be effective against all types of bacteria, viruses, and spores, making it unsuitable for achieving sterilization. Therefore, the correct answer is D) Boiling water, as it is not a method of sterilization
2. Which type of muscle tissue contracts involuntarily and is found in organs like the heart and intestines?
- A. Skeletal muscle
- B. Cardiac muscle
- C. Smooth muscle
- D. All of the above
Correct answer: C
Rationale: The correct answer is C: Smooth muscle. Smooth muscle tissue contracts involuntarily and is found in organs like the heart and intestines. Skeletal muscle is responsible for voluntary movements, and cardiac muscle is specific to the heart. Therefore, smooth muscle is the only type of muscle tissue that fits the description provided in the question, making it the correct choice. Option D, 'All of the above,' is incorrect as it includes skeletal and cardiac muscles, which do not fit the criteria of being found in organs like the heart and intestines. Understanding the differences between these types of muscle tissue is crucial for comprehending their specific functions in the body.
3. A lampshade consists of a cylindrical base (diameter 20cm, height 10cm) and a hemispherical top (same diameter as the base). What is its total surface area?
- A. 785 sq cm
- B. 1130 sq cm
- C. 1570 sq cm
- D. 2055 sq cm
Correct answer: D
Rationale: Calculate the surface area of the cylinder (base + lateral surface) and the hemisphere (half of a sphere's surface area). Add both areas to find the total surface area.
4. What property of a wave is measured in Hertz (Hz)?
- A. Amplitude
- B. Wavelength
- C. Speed
- D. Frequency
Correct answer: d
Rationale: Frequency, the number of oscillations per second, is measured in Hertz (Hz).
5. Identify the clause that acts as an adverbial modifier in the sentence: "While the movie was playing, I snuck out to get popcorn."
- A. While the movie was playing
- B. I snuck out
- C. to get popcorn
- D. the movie was playing
Correct answer: A
Rationale: The clause "While the movie was playing" modifies the verb "snuck out," describing the time of the action.
6. 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.
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