D). Many different experiments are performed and repeated.
Answer:
Euglena is a photosynthetic euglenoid with at least 150 described species. The cells are cylindrical with a rounded anterior and tapered posterior.
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An electron carrier is a molecule that transports electrons during cellular respiration. ... The energy stored in NADH + H+ and FADH2 will be released later in cellular respiration to generate ATP, which can be used as an energy source throughout the cell.
