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Nursing Elites

ATI TEAS 7

physics

1. Which factor affects the kinetic energy of an object the most?

Correct answer:

Rationale: Kinetic energy is directly proportional to the square of an object's velocity.

2. When a muscle shortens and generates force, this is called a:

Correct answer: A

Rationale: The correct answer is A: Contraction. When a muscle shortens and generates force, it is undergoing a contraction. During a contraction, the muscle fibers are actively pulling on the tendons, causing movement at a joint. This process requires energy and coordination between muscle fibers to contract simultaneously. In contrast, relaxation (option B) is when the muscle fibers return to their resting length and stop generating force. Extension (option C) refers to the movement that increases the angle at a joint, typically involving the lengthening of muscles. Atrophy (option D) is the wasting away or decrease in size of muscle tissue due to disuse or disease, not the active shortening and force generation of a muscle during a contraction.

3. What property of a substance measures the amount of matter per unit volume?

Correct answer: c

Rationale: Density measures the amount of matter (mass) per unit volume of a substance.

4. What type of nutrients require minimal digestion before absorption?

Correct answer: D

Rationale: Rationale: A) Carbohydrates: Carbohydrates require digestion by enzymes in the mouth, stomach, and small intestine before they can be broken down into simple sugars for absorption. B) Proteins: Proteins need to be broken down into amino acids by stomach acid and digestive enzymes in the stomach and small intestine before they can be absorbed. C) Fats: Fats require bile from the gallbladder to emulsify them into smaller droplets for enzymes to break them down into fatty acids and glycerol for absorption. D) Vitamins: Vitamins are organic compounds that are already in a form that can be readily absorbed by the body without extensive digestion. They are absorbed directly into the bloodstream from the small intestine and do not require significant breakdown before absorption.

5. Which of the following is NOT a type of chemical bond?

Correct answer: D

Rationale: Although gravity exists, it's not considered a chemical bond responsible for holding atoms together within molecules.

6. The spleen, a large lymphatic organ, is located in the:

Correct answer: B

Rationale: The correct answer is B: Abdomen. The spleen, a large lymphatic organ, is located in the upper left part of the abdomen, under the ribcage and above the stomach. It plays a crucial role in filtering and purifying the blood, removing old or damaged blood cells, and storing blood. The spleen is not located in the chest, pelvis, or head and neck. Understanding the anatomical location of organs is essential for medical professionals to accurately diagnose and treat patients.

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