Question

What is the definition of cellular respiration?(1 point)
Responses

the process of capturing the sun’s energy, converting it into sugar, and storing it in tissues
the process of capturing the sun’s energy, converting it into sugar, and storing it in tissues

the process of capturing the sun’s energy, converting it into oxygen, and releasing it into the atmosphere
the process of capturing the sun’s energy, converting it into oxygen, and releasing it into the atmosphere

the process of using the chemical energy from hydrogen and oxygen molecules to power life processes
the process of using the chemical energy from hydrogen and oxygen molecules to power life processes

the process of using the chemical energy from food and oxygen molecules to power life processes

the process of using the chemical energy from food and oxygen molecules to power life processes

The correct answer is:

the process of using the chemical energy from food and oxygen molecules to power life processes.

To find the correct definition of cellular respiration, we need to assess each response and choose the one that accurately explains the process.

Response 1: "the process of capturing the sun's energy, converting it into sugar, and storing it in tissues." This definition seems to describe photosynthesis, the process by which plants convert sunlight into energy.

Response 2: "the process of capturing the sun's energy, converting it into oxygen, and releasing it into the atmosphere." This definition is also incorrect as it also describes photosynthesis.

Response 3: "the process of using the chemical energy from hydrogen and oxygen molecules to power life processes." This definition is incorrect as it describes a completely different process called hydrogen fuel cells, which produce energy through combining hydrogen and oxygen.

Response 4: "the process of using the chemical energy from food and oxygen molecules to power life processes." This definition accurately describes cellular respiration. It is the process by which cells break down food (such as glucose) in the presence of oxygen to produce energy in the form of ATP (adenosine triphosphate).

Therefore, the correct definition of cellular respiration is: "the process of using the chemical energy from food and oxygen molecules to power life processes."