Question

which molecule is the main fuel for cellular respiration? *
starch
amino acids
glucose
fatty acids
what is the correct equation for aerobic respiration? *
co₂ + h₂o → glucose + o₂ + atp
glucose + o₂ → co₂ + h₂o + atp
glucose → lactic acid + atp
glucose → alcohol + co₂ + atp

Explanation:

Cellular respiration is the process by which cells break down fuel molecules to produce ATP. Glucose is the most common and primary fuel molecule for this process. Starch is a storage polysaccharide in plants and needs to be broken down into glucose first. Amino acids are mainly used for protein synthesis and can be used in cellular respiration only when glucose is scarce. Fatty acids are used in lipid metabolism and can also enter cellular respiration pathways but are not the main fuel.

For aerobic respiration, it requires oxygen. The process is the breakdown of glucose in the presence of oxygen to produce carbon dioxide, water, and ATP. The equation \(CO_2 + H_2O
ightarrow Glucose+O_2 + ATP\) is the equation for photosynthesis (reverse of aerobic respiration). The equation \(Glucose
ightarrow Lactic acid + ATP\) is for anaerobic lactic acid fermentation and \(Glucose
ightarrow Alcohol + CO_2+ATP\) is for anaerobic alcoholic fermentation.

Answer:

First question: C. Glucose
Second question: B. \(Glucose + O_2
ightarrow CO_2 + H_2O+ATP\)