ATI TEAS 7
TEAS 7 science practice questions
1. What is the largest part of the brain and is responsible for higher functions like thinking, memory, and learning?
- A. Brainstem
- B. Cerebellum
- C. Cerebrum
- D. Thalamus
Correct answer: C
Rationale: The cerebrum is the correct answer. It is the largest part of the brain and is responsible for higher functions like thinking, memory, and learning. The brainstem (option A) is responsible for basic life functions such as breathing and heart rate, not higher cognitive functions. The cerebellum (option B) is responsible for coordination and balance, not higher cognitive functions. The thalamus (option D) acts as a relay station for sensory information, but it is not the largest part of the brain nor responsible for higher cognitive functions.
2. What is the relationship between force and acceleration according to Newton's second law?
- A. Force is directly proportional to acceleration
- B. Force is inversely proportional to acceleration
- C. Force has no relation to acceleration
- D. Force causes deceleration, not acceleration
Correct answer: A
Rationale: According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This relationship is mathematically expressed as F = ma, where F represents force, m represents mass, and a represents acceleration. Therefore, an increase in force will result in a proportional increase in acceleration, supporting the statement that force is directly proportional to acceleration. Choice B is incorrect as it suggests an inverse relationship, which is not consistent with Newton's second law. Choice C is incorrect because force and acceleration are indeed related as per Newton's second law. Choice D is incorrect as force can cause acceleration or deceleration depending on the direction of the force relative to the motion of the object, but it does not exclusively cause deceleration.
3. What term describes the maximum displacement of particles from their rest position in a wave?
- A. Frequency
- B. Wavelength
- C. Amplitude
- D. Velocity
Correct answer: C
Rationale: The term that describes the maximum displacement of particles from their rest position in a wave is called the amplitude. Amplitude is a measure of the strength or intensity of a wave and is represented by the height of the wave from the rest position to the crest (or trough) of the wave. Frequency (A) refers to the number of complete wavelengths that pass a point in a given time. Wavelength (B) is the distance between two consecutive crests (or troughs) of a wave. Velocity (D) is the speed of the wave, not the maximum displacement of particles from their rest position.
4. Approximately how many muscles are in the human body?
- A. 100
- B. 200
- C. 600
- D. Over 600
Correct answer: D
Rationale: The human body has over 600 muscles responsible for various functions like movement, stability, and posture. These muscles work together enabling us to perform daily activities and are crucial for our overall health and well-being. Choices A, B, and C are incorrect because the human body has far more than 100, 200, or 600 muscles. Option D, 'Over 600,' is the correct answer as it accurately reflects the approximate number of muscles in the human body.
5. Immunoglobulin G (IgG) is the most abundant antibody type, responsible for:
- A. Immediate allergic reactions
- B. Neutralizing toxins and viruses
- C. Activating other immune cells
- D. Protecting newborns from infections
Correct answer: B
Rationale: Immunoglobulin G (IgG) is indeed the most prevalent antibody type in the blood and tissue fluids. Its primary functions include neutralizing toxins and viruses, promoting phagocytosis, and activating the complement system. IgG plays a crucial role in long-term immunity and provides passive immunity to newborns by crossing the placenta, safeguarding them from infections. Immediate allergic reactions are mainly mediated by IgE, not IgG. While IgM is known for activating other immune cells, IgG focuses on other key functions within the immune response, such as neutralizing pathogens and enhancing phagocytosis. Therefore, the correct answer is B, as IgG is primarily involved in neutralizing toxins and viruses, rather than the other options presented.
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