what is the role of the spleen in the body
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ATI TEAS 7

ATI TEAS Science Questions

1. What is the role of the spleen in the body?

Correct answer: B

Rationale: The correct answer is B. The spleen acts as a blood filter, removing old or damaged red blood cells. It also plays a role in immune responses, storing blood reserves, and helping to fight infection. The production of bile is primarily associated with the liver, not the spleen. While the bone marrow is responsible for red blood cell production, the spleen's main functions do not include this process. Storing fat is not a primary function of the spleen.

2. The kidneys are bean-shaped organs that perform several vital functions. Which of the following is NOT a primary function of the kidneys?

Correct answer: C

Rationale: The correct answer is C. The kidneys do not produce red blood cells. This function is carried out by the bone marrow. The primary functions of the kidneys include filtering waste products from the blood, regulating blood pressure, and maintaining water balance in the body. Red blood cells are produced in the bone marrow, not in the kidneys. Choices A, B, and D are incorrect as they are primary functions of the kidneys, which involve filtering waste products, regulating blood pressure, and maintaining water balance in the body, respectively.

3. What type of sentence is the sentence above?

Correct answer: B

Rationale: The sentence above is a complex sentence because it contains an independent clause 'You are a helpful assistant' and a dependent clause 'What type of sentence is the sentence above?'. A complex sentence is formed by joining an independent clause with one or more dependent clauses. In this case, the dependent clause 'What type of sentence is the sentence above?' cannot stand alone as a complete sentence. Choices A, C, and D are incorrect because the sentence does not contain multiple independent clauses (compound) or a combination of independent and dependent clauses (compound-complex).

4. What is the term for the distance between the center of a lens or curved mirror and its focal point?

Correct answer: B

Rationale: The correct answer is B: Focal length. Focal length is the distance between the center of a lens or curved mirror and its focal point. It determines how strongly the lens converges or diverges light, affecting the image formation. Aperture, choice A, refers to the opening through which light enters the lens, controlling the amount of light passing through. Refractive index, choice C, measures how much light bends when passing through a medium, affecting the speed of light. Lens thickness, choice D, is the physical dimension of the lens, influencing optical properties and compatibility with frames.

5. How will the number 847.89632 be written if rounded to the nearest hundredth?

Correct answer: A

Rationale: When rounding to the nearest hundredth, we look at the digit in the thousandth place, which is 8. Since the next digit, in the ten-thousandth place, is 9 (greater than or equal to 5), we round up the hundredth place digit. Therefore, 847.89632 rounded to the nearest hundredth is 847.90. Choice B (900) is incorrect as it does not round the number to the nearest hundredth. Choice C (847.89) is also incorrect as it drops the digit 6 in the ten-thousandth place. Choice D (847.896) does not round the number to the nearest hundredth as it retains the thousandth place digit 3.

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