a person wakes up with a fever the body begins its response to locate the origin of the problem and fix it what type of feedback mechanism is this
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ATI TEAS 7

ATI TEAS Practice Science Test

1. A person wakes up with a fever. The body begins its response to locate the origin of the problem and fix it. What type of feedback mechanism is this?

Correct answer: B

Rationale: This scenario describes a negative feedback mechanism. When the body detects a fever, it initiates responses to lower the temperature back to normal levels. Negative feedback mechanisms work to counteract changes and maintain homeostasis in the body. Choice A ('Equal') is incorrect as feedback mechanisms aim to restore balance, not maintain an equal state. Choice C ('Neutral') is incorrect as it does not describe the corrective nature of negative feedback. Choice D ('Positive') is incorrect as it would amplify the fever rather than regulate it.

2. In the problem 6 + 3 × 2, which operation should be completed first?

Correct answer: A

Rationale: The correct answer is 'Multiplication.' According to the order of operations (PEMDAS), which stands for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), multiplication should be completed first. In the given expression, 3 × 2 should be solved before adding 6 to the result. This means that the multiplication operation should be prioritized over addition. Choices B, C, and D are incorrect because, in the order of operations, multiplication takes precedence over addition, division, and subtraction, respectively.

3. Which best describes the final two sentences of the announcement?

Correct answer: B

Rationale: The final two sentences in the announcement serve as a word of caution to faculty members about trying to enter the canteen at the wrong time. It emphasizes the importance of respecting the given schedule and displaying a department badge before entering for lunch. The tone indicates a warning rather than simply a friendly reminder or a suggestion to eat elsewhere. Choice A is incorrect as the tone is more cautionary than friendly. Choice C is incorrect as there is no implied suggestion to get lunch elsewhere; instead, the focus is on following the recommended schedule. Choice D is incorrect as there is no mention of university sanctions, but rather a request to display a department badge and respect the designated lunch schedules.

4. Which organelle is responsible for producing energy in the cell?

Correct answer: B

Rationale: The correct answer is B: Mitochondria. Mitochondria are known as the powerhouse of the cell and are responsible for producing energy in the form of ATP through the process of cellular respiration. The other organelles listed, such as the nucleus, Golgi apparatus, and ribosome, have different functions within the cell and are not directly involved in energy production. The nucleus is responsible for storing genetic material and controlling cell activities. The Golgi apparatus is involved in modifying, sorting, and packaging proteins. Ribosomes are responsible for protein synthesis.

5. What is the most effective way to combine the following sentences? 1. The colonists refused to buy stamps. 2. They were determined to get the Stamp Act repealed.

Correct answer: B

Rationale: The conjunction 'and' is used to connect the two independent clauses in the most effective and grammatically correct way. This choice maintains the clarity of the sentence and the relationship between the two ideas. Choice A is incorrect as it lacks the necessary conjunction to properly connect the two independent clauses. Choice C is incorrect as it misses the subject 'they' before 'were determined.' Choice D is incorrect as it lacks the necessary coordinating conjunction 'and' before 'were determined,' resulting in a run-on sentence.

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