1. Which of the following terms refers to the abnormal sound heard during a stethoscope examination, potentially indicating a heart valve issue?

A. Tachycardia
B. Bradycardia
C. Heart murmur
D. Arrhythmia

Correct answer: D

Rationale: The correct answer is D: Arrhythmia. An arrhythmia refers to an irregular heart rhythm, which can manifest as abnormal sounds heard during a stethoscope examination. Tachycardia (A) and bradycardia (B) both pertain to heart rate abnormalities, with tachycardia indicating a fast heart rate and bradycardia a slow heart rate. However, these terms do not specifically relate to abnormal sounds. Heart murmur (C) is the term that refers to the abnormal sound heard during a stethoscope examination, potentially indicating a heart valve issue. Therefore, the correct answer is D as it best fits the description provided in the question.

2. Tissues are groups of cells with similar:

A. Appearance only
B. Function and structure
C. Location only
D. Age only

Correct answer: B

Rationale: The correct answer is B: 'Function and structure.' Tissues are groups of cells that work together to perform a specific function in the body. These cells have both similar functions, such as carrying out a specific task like contracting in muscle tissue, and similar structures, such as having similar shapes or types of organelles. This allows them to work together efficiently and effectively. Choices A, C, and D are incorrect because tissues are defined by more than just appearance, location, or age; they are primarily characterized by their shared function and structure.

3. What is the absolute value of -7?

A. 49
B. 17
C. 7
D. 14

Correct answer: A

Rationale: Absolute value refers to the non-negative distance of a number from zero. Regardless of being positive or negative, 7 is its distance from zero.

4. How can the periodic table be used to predict the charge of an ion formed by an element?

A. Look for elements with similar atomic weights.
B. Identify the group number, which corresponds to the typical ionic charge.
C. Calculate the difference between protons and electrons.
D. Analyze the element's position within the period.

Correct answer: B

Rationale: Identify the group number, which corresponds to the typical ionic charge. Elements tend to gain or lose electrons to achieve a stable electron configuration like the noble gas group. Their group number often indicates the number of electrons gained/lost and the resulting ionic charge.

5. A patient needs to take 2 tablets for every 30 pounds of body weight. If they weigh 150 pounds, how many tablets should they take?

A. 5
B. 10
C. 15
D. 20

Correct answer: A

Rationale: Divide the patient's weight (150 pounds) by the ratio denominator (30 pounds/tablet) to get 5 tablets.

6. Which of the following is NOT a characteristic of living organisms?

A. Made up of cells
B. Able to reproduce
C. Require energy
D. Non-motile

Correct answer: D

Rationale: Rationale: A) Made up of cells: All living organisms are composed of one or more cells. This is a fundamental characteristic of life as defined by cell theory. B) Able to reproduce: One of the key characteristics of living organisms is their ability to reproduce and pass on genetic information to offspring. C) Require energy: Living organisms require energy to carry out various life processes such as growth, reproduction, and maintenance of homeostasis. This energy is obtained through processes like metabolism. D) Non-motile: While some living organisms may be non-motile (unable to move on their own), movement is a common characteristic of many living organisms. Motility allows organisms to respond to their environment, find food, escape predators, and carry out other essential activities.