Question

tch this video, to answer the following questions:

1. what is needed for photosynthesis to occur? be specific.

1. what is needed for cellular respiration to occur?

1. what is atp?

Explanation:

1. For photosynthesis, the key requirements are carbon dioxide ($\ce{CO_2}$), water ($\ce{H_2O}$), light energy (usually from the sun), and chlorophyll (the pigment in chloroplasts that captures light). The process uses these to produce glucose and oxygen.
2. For cellular respiration, the main inputs are glucose (a sugar molecule) and oxygen ($\ce{O_2}$). In some cases (anaerobic respiration), oxygen is not required, but the primary aerobic process needs these to produce ATP, carbon dioxide, and water.
3. ATP (adenosine triphosphate) is the energy currency of cells. It stores and transfers energy for cellular processes (e.g., muscle contraction, active transport) by breaking its high - energy phosphate bonds (releasing energy when converted to ADP + phosphate).

Answer:

1. For photosynthesis to occur, carbon dioxide ($\ce{CO_2}$), water ($\ce{H_2O}$), light energy (from the sun), and chlorophyll (in chloroplasts) are needed.
2. For cellular respiration (aerobic) to occur, glucose and oxygen ($\ce{O_2}$) are needed (anaerobic respiration can occur without oxygen, using glucose).
3. ATP (adenosine triphosphate) is the energy - carrying molecule in cells, used to power cellular activities by releasing energy when its phosphate bonds are broken.