this flower is dead someone must have forgotten to water it this statement is an example of which of the following
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ATI TEAS 7

ATI TEAS Science

1. Which of the following best describes the statement 'This flower is dead; someone must have forgotten to water it'?

Correct answer: C

Rationale: The correct answer is 'C: An inference.' An inference is a conclusion reached based on evidence and reasoning. In this statement, the conclusion that someone must have forgotten to water the flower is drawn from the evidence that the flower is dead. Choice A, 'A classification,' is incorrect because the statement does not involve categorizing or grouping. Choice B, 'An observation,' is incorrect as the statement goes beyond just stating a fact and makes a conclusion. Choice D, 'A collection,' is unrelated to the process of drawing a conclusion based on the given evidence.

2. What is the primary function of the stomach in the digestive system?

Correct answer: B

Rationale: The correct answer is B: 'To break down proteins.' The primary function of the stomach in the digestive system is to break down proteins using gastric acid and enzymes. The stomach's acidic environment aids in protein digestion and prepares food for further processing in the small intestine. Choice A is incorrect because nutrient absorption primarily occurs in the small intestine, not the stomach. Choice C is incorrect because the stomach actually produces stomach acid to aid in digestion, not to neutralize it. Choice D is incorrect because regulating body temperature is not a primary function of the stomach within the digestive system.

3. What effect does doubling the net force applied to an object have on its acceleration, assuming mass remains constant?

Correct answer: A

Rationale: According to Newton's second law of motion, acceleration is directly proportional to the net force applied to an object when mass is constant. Therefore, if the net force is doubled, the acceleration of the object will also double. This relationship is expressed by the formula F=ma, where F is the net force, m is the mass, and a is the acceleration. When mass is constant, doubling the force applied will result in a proportional doubling of acceleration. Choices B, C, and D are incorrect because doubling the net force does not halve, maintain, or quadruple the acceleration; it directly and proportionally increases the acceleration.

4. What property of a wave determines its pitch in sound waves?

Correct answer: B

Rationale: The pitch of a sound wave is determined by its frequency. Frequency is the number of cycles of a wave that occur in a given time period. Higher frequencies correspond to higher pitches, while lower frequencies correspond to lower pitches. Amplitude refers to the intensity or loudness of a sound wave, wavelength is the distance between two consecutive points in a wave, and speed is the rate at which a wave travels through a medium. Therefore, in sound waves, it is the frequency that primarily determines the pitch, making option B the correct answer.

5. Which of the following neurotransmitters is associated with the feeling of happiness and well-being?

Correct answer: B

Rationale: The correct answer is B: Serotonin. Serotonin is a neurotransmitter known for its role in mood regulation, promoting feelings of happiness and well-being. It helps regulate emotions, sleep, and appetite. Low levels of serotonin have been linked to conditions like depression and anxiety. Choice A, Dopamine, is more associated with pleasure and reward pathways in the brain. GABA (Choice C) is an inhibitory neurotransmitter involved in reducing neuronal excitability, not primarily linked to happiness. Acetylcholine (Choice D) is involved in muscle contraction and has functions related to memory and attention, but it is not primarily associated with feelings of happiness and well-being.

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