what is the process by which damaged muscle tissue repairs and rebuilds itself
Logo

Nursing Elites

ATI TEAS 7

TEAS 7 practice test science

1. What is the process by which damaged muscle tissue repairs and rebuilds itself?

Correct answer: B

Rationale: Regeneration is the correct answer. It is the process by which damaged muscle tissue repairs and rebuilds itself. New muscle cells are formed during regeneration to replace the damaged ones, allowing the muscle to heal and regain its function. Degeneration refers to tissue breakdown, hyperplasia is the increase in the number of cells in an organ or tissue, and metaplasia is the transformation of one type of tissue into another.

2. What is the formula for calculating molarity?

Correct answer: A

Rationale: The correct formula for calculating molarity is M = n/V. In this formula, 'M' represents molarity, 'n' represents the number of moles of solute, and 'V' represents the volume of the solution in liters. Molarity is defined as the number of moles of solute per liter of solution, hence the ratio of moles to volume. Choice B, 'M = n/L', is incorrect because 'L' should represent liters instead of the number of moles. Choice C, 'M = mol/L', is incorrect as it does not include the representation of the number of moles 'n'. Choice D, 'M = mol/dm³', is incorrect because 'dm³' is a volume unit equal to a liter, but the correct representation should be in terms of the volume of the solution in liters. Therefore, the correct answer is M = n/V.

3. What is the feedback mechanism in the endocrine system that helps maintain hormone balance?

Correct answer: B

Rationale: In the endocrine system, negative feedback is the mechanism by which hormone levels are regulated. When hormone levels reach a certain threshold, they signal the body to stop producing more of that hormone, thus maintaining a balance. Negative feedback (option B) is the correct answer as it helps in preventing overproduction of hormones by suppressing their own release. Positive feedback (option A) would lead to an excessive production of hormones, disrupting the balance. The cascade effect (option C) involves one hormone triggering the release of another but does not directly regulate hormone levels. The dual hormone system (option D) refers to two hormones working together but does not specifically address the feedback mechanism for maintaining hormone balance.

4. Which of the following conclusions is well supported by the passage?

Correct answer: B

Rationale: The passage mentions that Mr. Morgan's application for the position of Lead Technician has been received, along with a higher-than-expected number of applications. It also states that the Human Resources team will take longer than previously stated to review candidates and schedule interviews. While there is no direct mention of Mr. Morgan's qualifications or the likelihood of him being offered an interview, it can be inferred that his interest in the position and the competitive application pool suggest that he is well qualified and stands a good chance of being offered an interview. Therefore, the most supported conclusion is that Mr. Morgan is well qualified for the position of Lead Technician and will likely be offered an interview. Choice A is incorrect because the passage does not mention the specific timeframe within which Mr. Morgan was informed about receiving feedback. Choice C is not directly supported by the passage as it does not indicate any challenges in finding a qualified candidate. Choice D is not directly addressed in the passage and is speculative.

5. Which of the following units is used to express concentration as a mass of solute per unit volume of solution?

Correct answer: A

Rationale: Molality (m) is the unit used to express concentration as a mass of solute per unit volume of solution. It is calculated by dividing the mass of solute in grams by the mass of the solvent in kilograms. Molality is preferred over molarity when there are large temperature variations as it is temperature-independent, making it a more accurate measure of concentration. Molarity (B) is the unit used to express concentration as moles of solute per liter of solution, weight percent (C) is the mass of solute per 100 parts of the total mass of the solution, and parts per million (D) is used to express very small concentrations where 1 ppm is equivalent to 1 mg of solute per liter of solution.

Similar Questions

Which of the following substances is NOT typically found in healthy urine?
In which chapter should Clothilde look for more information about how to do this?
Among the following transitional words or phrases, which one indicates contrast?
What is the strongest evidence for evolution?
Which of the following is equivalent to 8 pounds and 8 ounces? (Round to the nearest tenth of a kilogram.)

Access More Features

ATI TEAS Premium Plus
$149.99/ 90 days

  • Actual ATI TEAS 7 Questions
  • 3,000 questions with answers
  • 90 days access

ATI TEAS Basic
$49/ 30 days

  • 3,000 Questions with answers
  • 30 days access

Other Courses