what is a prime number
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ATI TEAS 7

Practice Math TEAS TEST

1. What is a prime number?

Correct answer: A

Rationale: The correct answer is A: 'A number divisible by only 1 and itself.' A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers. This definition aligns with choice A. Choice B is incorrect because not all prime numbers are divisible by 2 and 3. Choice C is incorrect as prime numbers are not divisible by any number other than 1 and themselves. Choice D is incorrect because a prime number has exactly two factors, 1 and itself, not three factors.

2. Which type of glial cell provides structural support and insulation for neurons in the central nervous system?

Correct answer: C

Rationale: Oligodendrocytes are a type of glial cell that provides structural support and insulation for neurons in the central nervous system by forming myelin sheaths around axons. Schwann cells (option A) perform a similar function but in the peripheral nervous system. Astrocytes (option B) are involved in providing nutrients to neurons, maintaining the chemical environment, and repairing damage. Microglia (option D) are primarily responsible for immune defense in the central nervous system, not for providing structural support and insulation for neurons.

3. Which of the following terms refers to a muscle twitch, a single forceful contraction of a muscle fiber?

Correct answer: C

Rationale: The correct term for a muscle twitch, a single forceful contraction of a muscle fiber, is 'Fasciculation' (choice C). Fasciculation specifically describes this phenomenon. 'Tetanus' (choice A) refers to sustained muscle contraction, 'Tremor' (choice B) indicates a shaky or quivering movement, and 'Rigidity' (choice D) denotes stiffness or inflexibility in muscles. Therefore, choices A, B, and D are incorrect in the context of a single forceful contraction of a muscle fiber.

4. Most catalysts found in biological systems are which of the following?

Correct answer: B

Rationale: Enzymes are special proteins that act as catalysts in biological systems. They accelerate chemical reactions by lowering the activation energy required for the reaction to occur. Enzymes play a critical role in the regulation of metabolic pathways and are essential for various biological processes. While some enzymes may require cofactors for activity, the enzymes themselves are the catalysts in biological systems. Therefore, choice B, special proteins called enzymes, is the most suitable answer. Choices A, C, and D are incorrect because enzymes, not lipids, are the primary catalysts in biological systems.

5. Based on his work and goals, how should the sentence 'Fred Hampton desired to see lasting social change for African Americans through nonviolent means and community recognition.' be best introduced?

Correct answer: D

Rationale: The correct answer is 'D: As a result.' This choice effectively ties Hampton's desire for social change to his ongoing efforts and achievements. 'As a result' indicates a logical connection between Hampton's aspirations and the actions he took to achieve them. Choices B, C, and A are incorrect because they do not provide a suitable transition that connects Hampton's goals with his actions or achievements. 'Unfortunately' (choice B) introduces a negative connotation that is not appropriate in this context. 'Finally' (choice C) suggests a chronological sequence rather than a cause-and-effect relationship. 'NO CHANGE' (choice A) does not establish a clear link between Hampton's desires and his efforts for social change.

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