C. because stimuli is how your body responds to something, and in this case, someone's heart rate increases WHEN their blood oxygen drop. Do you see how it responds? ;-)
Fermentation can be defined as the process that involves partial breakdown of sugar molecules into alcohol and lactic acid, in the absence of oxygen. It occurs in many bacterial cells, yeasts, and starved muscle cells. Whereas respiration involves complete breakdown of sugar molecules into carbon dioxide and water, in the presence of oxygen. It occurs in all living organisms. Respiration provides a large amount of energy as compared to fermentation as respiration produces 36 ATP molecules and 2 ATP molecules per glucose molecule.
Hence, the correct answer is 'option C - cellular respiration produces more ATP molecules than fermentation.'
Vertebrae are the scientific term for the backbones.
All backbones are backbones... right? :'D
However, the vertebrae are only a bone GROUP; there are other types of bones like joints, shafts and etc which don't come under the vertebrae clssification.
