Logo

Nursing Elites

ATI TEAS 7

Chemistry

1. How do isotopes affect the atomic mass of an element?

Correct answer: B

Rationale: The atomic mass of an element is the average mass of all the isotopes of that element. Since isotopes have different numbers of neutrons, they also have slightly different masses. This variation in mass is what causes the atomic mass of an element to be a decimal number, rather than a whole number.

2. What part of speech is the underlined word in the sentence "I was disappointed by the outcome"?

Correct answer: C

Rationale: "Disappointed" modifies the pronoun "I," making it an adjective.

3. Which hormone, produced by the pineal gland, plays a role in regulating sleep-wake cycles and is often associated with the body's internal circadian rhythm?

Correct answer: a

Rationale: The correct answer is A: Melatonin. Melatonin is a hormone produced by the pineal gland that plays a crucial role in regulating sleep-wake cycles and is closely tied to the body's circadian rhythm. It is often referred to as the 'sleep hormone' because it helps signal to the body when it is time to sleep and wake up. Serotonin (option B) is a neurotransmitter that plays a role in mood regulation and happiness. Dopamine (option C) is involved in reward-motivated behavior and movement. Endorphins (option D) are neuropeptides that act as natural painkillers and contribute to feelings of pleasure. Therefore, Melatonin is the hormone associated with the body's internal circadian rhythm and sleep-wake cycles.

4. A bottle of hand sanitizer contains 70% alcohol. If 5ml of sanitizer are used, how much pure alcohol is present?

Correct answer: D

Rationale: Multiply the total sanitizer volume (5ml) by the alcohol percentage (70%) to get 3.5ml of pure alcohol.

5. Frequent, painful urination is a common symptom of:

Correct answer: D

Rationale: The correct answer is D, 'All of the above.' Frequent, painful urination can be a symptom of various conditions affecting the urinary system. In diabetes, high blood sugar levels can lead to increased urine production. UTIs often cause painful urination due to the infection in the urinary tract. Kidney stones can also result in frequent and painful urination as they obstruct the flow of urine. Therefore, all three options can present with the common symptom of frequent, painful urination, making 'All of the above' the correct choice.

6. What is the term for the small air sacs in the lungs where gas exchange (oxygen and carbon dioxide) takes place?

Correct answer: B

Rationale: The correct answer is B: Alveoli. Alveoli are the small air sacs in the lungs where gas exchange occurs. Oxygen from the air we breathe diffuses into the blood in the capillaries surrounding the alveoli, while carbon dioxide diffuses from the blood into the alveoli to be exhaled. Bronchi (A) are the large airways that branch off the trachea (C) and lead into the lungs. Bronchioles (D) are smaller airways that branch off the bronchi. Understanding the structure and function of the respiratory system is important for comprehending how oxygen is taken in and carbon dioxide is removed from the body.

Similar Questions

What is the term for the small air sacs in the lungs where gas exchange (oxygen and carbon dioxide) takes place?
The formula for calculating ideal body weight (IBW) for men is IBW (kg) = 50 + 2.3 * (height in cm - 150). If a man is 180cm tall, what is his ideal body weight?
A study finds a specific gene linked to increased risk of heart disease. Does this mean everyone with that gene will develop heart disease?
Choose the most appropriate word to complete the sentence "He was _____ about his upcoming presentation."
A bag contains 5 red marbles and 7 blue marbles. If you draw a marble without looking, what is the probability it will be red?
A birthday party hat has a cone-shaped top with a radius of 5cm and a height of 12cm. What is its volume?

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
$99/ 30 days

  • 3,000 Questions with answers
  • 30 days access

Other Courses