Casey Griggs is a very capable computer engineer. Recently, he noticed a problem that computer engineers have, and thought of a solution to the problem that might represent an opportunity for a new software product. Casey's idea for a new software product is an example of a(n) discovery.
A) chance
B) serendipitous
C) traditional
D) conventional
E) opportune

B) serendipitous

Explanation:

Serendipitous discovery is  a type of discovery that occurs when unplanned events about things that are surprising are made, rather than being discovered through planned investigation. This type of discovery is mostly accidental or by chance. Casey’s idea that emanated from the accidental discovery of a problem computer engineers have, which led to the idea of coming up with a new product that is beneficial is simply an example of serendipitous discovery.

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.