Question

a student is working on a diagram to model the flow of energy in a plant cell. which statement best describes which structures the diagram should emphasize?
a. it should emphasize the nucleus, because it controls chloroplasts, and the chloroplasts, because they turn sunlight into food
b. it should emphasize the chloroplasts, because they turn sunlight into food, and the mitochondria, because they release food energy for use
c. it should emphasize the cell membrane, because it turns sunlight into food, and the cytoplasm, because it distributes food energy through the cell
d. it should emphasize the cell membrane, because it turns sunlight into food, and the lysosomes, because they dispose of waste energy from the process

Explanation:

Chloroplasts perform photosynthesis, converting sunlight into chemical - energy in the form of food. Mitochondria perform cellular respiration, releasing the energy stored in food for the cell to use. These two organelles are key in the energy - flow within a plant cell. The nucleus is mainly for genetic control, the cell membrane is for protection and transport, the cytoplasm is the fluid matrix, and lysosomes are for waste disposal.

Answer:

B. It should emphasize the chloroplasts, because they turn sunlight into food, and the mitochondria, because they release food energy for use