when a blockage forms in a coronary artery reducing blood flow to the heart muscle this condition is called
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ATI TEAS 7

TEAS 7 science quizlet

1. When a blockage forms in a coronary artery, reducing blood flow to the heart muscle, this condition is called:

Correct answer: B

Rationale: A myocardial infarction, commonly known as a heart attack, occurs when a blockage forms in a coronary artery, leading to reduced blood flow to the heart muscle. Atherosclerosis refers to the buildup of plaque in the arteries, which can lead to blockages but is not the name for this specific condition. Angina pectoris is chest pain or discomfort due to inadequate blood supply to the heart muscle, which is a precursor to a heart attack but not the name for this condition. A heart murmur is an abnormal sound heard during a heartbeat, often due to turbulent blood flow, and is not related to a blockage in a coronary artery.

2. What is the term for the maximum amount of solute that can dissolve in a solvent at a specific temperature and pressure?

Correct answer: B

Rationale: Solubility is the correct term for the maximum amount of solute that can dissolve in a solvent at a specific temperature and pressure. Molarity is a measure of concentration, not the maximum amount that can dissolve. Concentration is a general term for the amount of solute present in a given amount of solvent. Saturation is related to solubility but specifically refers to a state where no more solute can be dissolved in the solvent.

3. What is the major difference between somatic and germline mutations?

Correct answer: D

Rationale: The major difference between somatic and germline mutations is that germline mutations are usually inherited and can be passed on to offspring, while somatic mutations occur in non-reproductive cells and only affect the individual in which they occur. This means that germline mutations have the potential to be present in future generations, while somatic mutations do not.

4. Which of the following statements best describes Newton's first law of motion?

Correct answer: A

Rationale: Newton's first law of motion, also known as the law of inertia, states that an object in motion will remain in motion, and an object at rest will remain at rest unless acted upon by an external force. This principle highlights the concept of inertia, which is the tendency of objects to resist changes in their state of motion. Option A accurately captures this fundamental aspect of Newton's first law. Options B, C, and D describe Newton's second law, third law, and the relationship between force, acceleration, and mass, respectively. Therefore, options B, C, and D are incorrect as they pertain to different laws formulated by Newton.

5. What are organisms that break down dead organisms and return nutrients to the environment called?

Correct answer: B

Rationale: Decomposers are essential organisms in the ecosystem as they break down dead organisms and organic matter, such as bacteria, fungi, and some insects. By decomposing complex organic materials into simpler forms, they release nutrients back into the environment for other organisms to utilize. Producers (option A) are organisms that generate their own food through photosynthesis; consumers (option C) are organisms that feed on other organisms for energy, and parasites (option D) are organisms that live on or in another organism, benefiting at the host's expense rather than breaking down dead organisms for nutrient recycling.

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