객관식
Which of the following chemical properties best explains why sodium reacts vigorously with water?
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1. Intro to General Chemistry
Chemical Properties
객관식
Which of the following is a chemical substance that organisms require to live?
A
Sulfur hexafluoride
B
Oxygen
C
Methane
D
Carbon dioxide
검증된 단계별 안내1
Understand the definition of a chemical substance required by organisms to live: it must be essential for biological processes such as respiration, energy production, or cellular function.
Evaluate each option based on its biological role: Sulfur hexafluoride (SF\_6) is an inert gas used industrially and has no biological role in living organisms.
Methane (CH\_4) is a simple hydrocarbon and a source of energy for some microorganisms but is not universally required by all organisms to live.
Carbon dioxide (CO\_2) is a product of respiration and used by plants in photosynthesis, but it is not directly required by most organisms to live; rather, it is a waste product or a resource for plants.
Oxygen (O\_2) is essential for aerobic respiration in most organisms, enabling the production of energy necessary for survival, making it the chemical substance required by organisms to live.
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