The biceps and triceps act against one another to bend and straighten the elbow joint
The root nodules of leguminous plants houses nitrogen-fixing bacteria called Rhizobia. Rhizobia has a symbiotic relationship with leguminous plants that allows both to benefit from each other.
By binding to hydrogen, the Rhizobia bacterium is able to convert or fix nitrogen gas into ammonia , a form that the plant can use. Likewise, the legume plant provides the rhizobia bacterium with carbohydrate which the rhizobia depends on for energy. It is important to note that the carbohydrate sent to the nodules for the rhizobia is also what is used as a source of hydrogen to help the bacterium convert nitrogen to ammonia.
It indicates that our ancestors had a different build than humans of today.
The answer is 10 NADH.
For each glucose molecule that enters glycolysis, a total of 10 NADH are produced.
That is; during glycolysis 2 NADH are produced, while another two are produced in the conversion of pyruvic acid to acetyl-CoA, and in the Citric acid Cycle 6 NADH are produced, that makes a total of 10 NADH, which are then taken to the electron transport chain to produce ATP.