Question 1

Which organ system is primarily responsible for distributing oxygen and nutrients to body cells and removing wastes such as carbon dioxide?

Accepted Answer

Cardiovascular system

Question 2

What is the main function of the plasma membrane in maintaining boundaries?

Accepted Answer

It separates the internal environment of the cell from the external environment.

Question 3

A person accidentally touches a hot stove and quickly pulls their hand away. Which necessary life function is most directly involved in this response?

Accepted Answer

Responsiveness (Excitability)

Question 4

Which of the following best describes metabolism?

Accepted Answer

All chemical reactions that occur in body cells, including catabolism and anabolism

Question 5

Which survival need is most directly involved in cellular respiration, as described by the equation $$ \mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} ightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 	ext{energy (ATP)} $$?

Accepted Answer

Oxygen

Question 6

If a person is exposed to an environment with low atmospheric pressure, which physiological process is most likely to be directly affected?

Accepted Answer

Gas exchange in the lungs

Question 7

Which of the following is NOT a necessary life function?

Accepted Answer

Photosynthesis

Question 8

A patient with a fever of 104°F is at risk because:

Accepted Answer

Chemical reactions will occur too quickly, potentially disrupting body systems.

Question 9

Which of the following best explains why water is essential for life?

Accepted Answer

It provides the environment necessary for chemical reactions and is the fluid base for secretions and excretions.

Question 10

Which process is responsible for the removal of urea, carbon dioxide, and feces from the body?

Accepted Answer

Excretion

Question 11

A child grows taller each year. Which necessary life function does this best illustrate?

Accepted Answer

Growth

Question 12

Which nutrient class is the major source of energy for the body?

Accepted Answer

Carbohydrates

Question 13

Which organ system is most directly involved in protecting the body from the external environment?

Accepted Answer

Integumentary system

Question 14

Which of the following is an example of catabolism?

Accepted Answer

Breaking down glucose to release energy

Question 15

Which of the following best describes the interdependence of cells in the human body?

Accepted Answer

Cells work together, with body functions distributed among different organ systems.

Question 16

Which of the following is a direct result of the cardiovascular system failing to deliver oxygen to tissues?

Accepted Answer

Metabolic reactions will cease due to lack of ATP production.

Question 17

Which of the following is a function of proteins in the body?

Accepted Answer

Cell building and cell chemistry

Question 18

Which of the following best describes the process of reproduction at the cellular level?

Accepted Answer

Division of cells for growth or repair

Question 19

Which of the following is a real-life example of the importance of maintaining boundaries in the human body?

Accepted Answer

The plasma membrane preventing harmful substances from entering the cell

Question 20

Which of the following is the correct term for all chemical reactions that occur within body cells?

Accepted Answer

Metabolism

Requirements for Life: Necessary Life Functions and Survival Needs

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