<span>Two ATP
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</span><span>During glycolysis, the overall gain of ATP per glucose molecule is 2. Although glycolysis produces 4 ATPs, it only uses 2 ATPs in the process!</span>
I would say the alveoli. They are tiny air pockets in the lungs: this is where the diffusion of oxygen and carbon dioxide occurs.
Hope this helps! x
Sperm need temperatures between 2 to 10 degrees Centigrade lower and then the body temperature to develop. This is the reason why the testes are located in a bag of skin called the scrotal sacs<span> (or </span>scrotum<span>) that hangs below the body and where the evaporation of secretions from special glands can further reduce the temperature and adjust to the temperature it needs.
I found this and i hope it helps you.</span>
