which organ is responsible for detoxifying harmful substances in the body

ATI TEAS 7

ATI TEAS Practice Test Science

1. Which organ is responsible for detoxifying harmful substances in the body?

A. Kidneys
B. Liver
C. Heart
D. Pancreas

Correct answer: B

Rationale: The correct answer is the Liver. The liver is the organ responsible for detoxifying harmful substances in the body. It accomplishes this by metabolizing drugs and filtering blood. The liver plays a crucial role in maintaining overall health by processing and eliminating toxins. Choices A, C, and D are incorrect. The kidneys primarily filter blood to remove waste and excess substances, the heart is responsible for pumping blood throughout the body, and the pancreas aids in digestion and regulating blood sugar levels, but none of these organs are primarily responsible for detoxification.

2. What is the term for the tiny particles that make up atoms?

A. Protons
B. Electrons
C. Neutrons
D. Subatomic particles

Correct answer: D

Rationale: The correct answer is 'Subatomic particles.' Subatomic particles are the tiny components that constitute atoms, including protons, neutrons, and electrons. Protons and neutrons are located in the nucleus of an atom, while electrons revolve around the nucleus. Choices A, B, and C specifically refer to individual subatomic particles but do not encompass the complete range of particles within an atom.

3. Simplify the expression. Which of the following is correct? (3/2)(8/3) ÷ (5/4)

A. 1
B. 2
C. 3
D. 4

Correct answer: B

Rationale: Using PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction): (3/2)(8/3) ÷ (5/4) = (24/6) ÷ (5/4) = (4/1) ÷ (5/4). To divide fractions, the second fraction is flipped and then multiplied by the first fraction, resulting in (4/1)(4/5) = (16/5), which simplifies to 3(1/5) or 2.

4. What function do hydrophobic proteins often provide in the body?

A. Digestive enzymes
B. Provide structure
C. Carry oxygen molecules
D. Store energy

Correct answer: B

Rationale: Hydrophobic proteins are known for their ability to repel water and are often involved in providing structural support in cells and tissues. They help maintain the structural integrity and shape of cell membranes, organelles, and other cellular components. Choice A, digestive enzymes, typically consist of hydrophilic proteins that interact with water and substrates to facilitate digestion. Choice C, carrying oxygen molecules, is a function commonly associated with specific proteins like hemoglobin. Choice D, storing energy, is usually performed by proteins like enzymes involved in energy storage and release, such as glycogen phosphorylase.

5. Which of the following additional pieces of information supports the claim that napping during the workday will help employees 'be happier, healthier, and more productive'?

A. In 1999, National Napping Day was founded in response to Daylight Saving Time
B. Rested people have better impulse control, so they are more likely to choose nutritious food over junk food
C. Multiple companies have designed special seats or pods specifically for getting the optimal workplace nap
D. A study showing that the best time of the day for a nap is between 2 and 3 p.m.

Correct answer: B

Rationale: The statement that rested people have better impulse control supports the claim that napping during the workday can lead to employees being happier, healthier, and more productive. Improved impulse control can result in better decision-making, including choosing nutritious food over junk food, which contributes to overall well-being and productivity. Choices A, C, and D do not directly address the relationship between napping and improved well-being or productivity, making them less relevant to supporting the claim.