Question

Organisms acquire energy through what two methods?

a) Respiration and fermentation
b) Photosynthesis and chemosynthesis
c) Digestion and excretion
d) Absorption and secretion

Answer 1

Organisms primarily acquire energy through photosynthesis and chemosynthesis, used by autotrophs, or by consuming other organisms, used by heterotrophs, which is followed by cellular respiration.

Step-by-step explanation:

Organisms acquire energy through two primary methods: photosynthesis and chemosynthesis, which are methods used by autotrophs. These processes involve the conversion of inorganic compounds, using sources of energy such as sunlight for photosynthesis, to produce carbohydrates. Conversely, heterotrophs obtain energy by consuming and digesting other living or previously living organisms, which includes the process of cellular respiration. During cellular respiration, carbohydrates react with oxygen, producing carbon dioxide and water, while releasing energy.