Answer:
Explanation:
<em>Fermentation does not involve an electron transport system, and no ATP is made by the fermentation process directly. Fermenters make very little ATP—only two ATP molecules per glucose molecule during glycolysis. ... During lactic acid fermentation, pyruvate accepts electrons from NADH and is reduced to lactic acid.</em>
Answer:
A.) Are extinct
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Answer:
All the statements about DNA recombination are true.
Explanation:
Recombination can be defined as any process in which the formation of new DNA from different molecules takes place, so that the genetic information derived from each original DNA molecule will be present in the new ones. Allows random rearrangement of genes within and between chromosomes.
It constitutes a source of genetic variability and physical exchange of segments. It has regulatory value, since it can result in the activation or inactivation of genes and is also a repair pathway.
There is general or homologous recombination, which occurs between substrates with extensive homology.
Site-specific recombination, where there is an exchange of two specific DNA sequences.
And transposition, which involves a short segment of DNA that moves from one place to another on the same or different chromosome.
The Chemical digestion which happens in the small intestine is based on the three digestive organs namely the liver,gallbladder and pancreas. The pancreas has exocrine cells secreting buffers and enzymes and produces pancreatic juice containing carbonate ions and would deliver it to the duodenum which is the answer.