Compare and contrast

Interesting question, to answer the first one. Both processes produce carbon dioxide and water, but cellular respiration extracts energy in a very sophisticated and gradual way, rather than in one sudden step. Most of its energy is extracted by the electron transport chain and transformed into proton gradient energy that is subsequently used to produce ATP, which is then expended wherever energy is needed. Also, in cellular respiration, we typically start with glucose or a simple sugar, whereas in combustion, we start with fuel!

I'll give this one a go at it too... Substrate-level phosphorylation occurs during Glycolysis and it involves the physical addition of a free phosphate to ADP to form ATP. Oxidative phosphorylation, on the other hand, takes place along the electron transport chain, where ATP is synthesized indirectly from the creation of a proton gradient (hydrogen ions inside the intermembrane space of the mitochondria) and the movement of these protons back across the membrane through the protein channel, ATP synthase (or ATPase, whatever your textbook refers to it as). As the protons pass through, ATP is created, from ADP to ATP.

Thank you star! !

Aerobic respiration require oxygen in order to function, whereas anaerobic respiration does not require oxygen. However, both require glucose as a starting substrate.

Thank you Duddy! !

1) In humans, white adipose tissue composes as much as 20% of the body weight in men and 25% of the body weight in women. In neonates (new born babies), brown fat, which then makes up about 5% of the body mass and is located on the back, along the upper half of the spine and towards the shoulders.

2) White adipose tissue serves three functions: heat insulation, mechanical cushion, and most importantly, a source of energy. Brown fat is of great importance to avoid lethal cold (hypothermia is a major death risk for premature neonates.

Hope this helps with all your Q's.


And you're welcome.

In one of my notes it says Key differences for CR and Combustion: Minimize heat, maxamise ATP
and control mechanisms, which one minimizes heat?

Would have to be ATP produce, cellular respiration. Because in combustion you release energy in the form of heat, it can't be combustion.

Thank you all!!!

Welcome.