Question

during the course of many cell processes, a molecule of atp may break apart to form a molecule of adp and a phosphate group. how is this action of atp useful to the cell?
it stores chemical energy for the cell to use at a later time
it absorbs heat, which prevents the cell from overheating
it removes a metabolic poison from the cell
it releases chemical energy for the cell to use immediately
which best describes the process of photosynthesis?
chemical energy is transformed into light energy and oxygen is released
light energy is converted into chemical energy and oxygen is released
light energy is converted into chemical energy and carbon dioxide is released
chemical energy is transformed into light energy and carbon dioxide is produced
using the figure below, why might a candle in jar a burn longer than the candle in jar b?
carbon dioxide produced by the plant allows the candle to burn longer
chlorophyll produced by the plant allows the candle to burn longer
glucose produced by the plant allows the candle to burn longer
oxygen produced by the plant allows the candle to burn longer

Explanation:

1. ATP breaks into ADP and a phosphate group to release energy for the cell's immediate use. It is not for long - term energy storage, heat absorption, or removing metabolic poisons.
2. Photosynthesis converts light energy into chemical energy (stored in glucose) and releases oxygen as a by - product.
3. A plant in jar A can produce oxygen through photosynthesis, and oxygen is necessary for combustion, so the candle burns longer.

Answer:

1. It releases chemical energy for the cell to use immediately
2. Light energy is converted into chemical energy and oxygen is released
3. Oxygen produced by the plant allows the candle to burn longer