which of the following bones is part of the axial skeleton
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ATI TEAS 7

TEAS Practice Test Science

1. Which of the following bones is part of the axial skeleton?

Correct answer: C

Rationale: The correct answer is C: Skull. The axial skeleton consists of bones along the body's central axis, including the skull, vertebral column, ribs, and sternum. Choices A, B, and D are incorrect because the femur, humerus, and pelvis are part of the appendicular skeleton, which comprises the bones of the limbs and girdles.

2. Diabetes mellitus is a chronic condition affecting blood sugar control. What is the main type of hormone deficiency associated with type 1 diabetes?

Correct answer: A

Rationale: The correct answer is A: Insulin. Type 1 diabetes is characterized by the body's inability to produce insulin, the hormone responsible for regulating blood sugar levels. Insulin deficiency in type 1 diabetes leads to high blood sugar levels as the body cannot effectively utilize glucose for energy. Glucagon (Choice B) is a hormone that works opposite to insulin, raising blood sugar levels. Estrogen (Choice C) and testosterone (Choice D) are not directly involved in blood sugar control or the pathophysiology of type 1 diabetes.

3. Which of the following accurately describes the measurements?

Correct answer: B

Rationale: Accuracy refers to how close a measurement is to the true or accepted value, while precision refers to how close individual measurements are to each other. If the measurements are accurate but not precise, it means they consistently hit the target value but may vary in terms of how closely grouped they are. Choice B, 'They are accurate but not precise,' correctly describes the scenario where the measurements are on target but not consistently close to each other. Choice A is incorrect because it implies both accuracy and precision, which is not the case here. Choice C is incorrect because it suggests precision without accuracy, while choice D is incorrect as it indicates neither accuracy nor precision, which is not a typical scenario for measurements.

4. Which structure in the skin is responsible for producing hair?

Correct answer: D

Rationale: The correct answer is D: Hair follicle. Hair follicles are structures in the skin responsible for producing hair. They are specialized structures that contain the hair root and the bulb, where hair growth originates. Sudoriferous glands produce sweat, sebaceous glands produce sebum, and melanocytes are responsible for producing melanin, the pigment that gives hair and skin their color. Choices A, B, and C are incorrect because sudoriferous glands produce sweat, sebaceous glands produce sebum, and melanocytes produce melanin, respectively, but they are not responsible for producing hair.

5. What is the term for a substance that can act as both a proton donor and a proton acceptor?

Correct answer: C

Rationale: Amphiprotic substances are those that can both donate and accept protons. They possess characteristics of both acids and bases, making them capable of acting as proton donors and proton acceptors. Choices A and B represent substances that are specific to either donating or accepting protons. Choice D does not describe a substance's ability to donate or accept protons since neutrality does not inherently involve proton donation or acceptance.

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