Question

life requires energy. in a short essay (~100 words), describe the basic principles of energetically in an animal cell. how is the flow and transformation of energy different in a photosynthesizing cell? include the role of atp and enzymes in your discussion.

Explanation:

In an animal cell, energy comes from food. Food is broken down via cellular respiration (glycolysis, Krebs cycle, electron transport chain). Enzymes catalyze reactions. ATP is the energy currency. In a photosynthesizing cell, light energy is captured. Photosynthesis (light - dependent and light - independent reactions) uses enzymes. ATP is made in light - dependent reactions. Light energy is converted to chemical energy (glucose). Animal cells rely on consuming organic matter for energy, while photosynthetic cells can produce their own energy - rich molecules from inorganic substances (CO₂ and H₂O) using light.

Answer:

In an animal cell, energy is obtained from food. Cellular respiration (with enzyme - catalyzed steps) converts food energy to ATP. In a photosynthesizing cell, light energy is captured. Photosynthesis (using enzymes) makes ATP (in light - dependent reactions) and converts light to chemical energy (glucose). Animal cells consume organic matter; photosynthetic cells produce energy - rich molecules from inorganic substances (CO₂, H₂O) using light.