Determine the photoautotrophic primary producer from the choices below. Kinetoplastid E. coli Apicomplexan Diatom Ciliates

Diatom

Explanation:

A photoautotrophic primary producer is an organism which can synthesize its own food by the process of photosynthesis. This producer lies at the base of the food chain being first trophic level of the food chain.

Diatom can be defined as the single-celled photoautotrophic primary producer. They can be found in both freshwater and marine water ecosystems. These are eaten up by zooplanktons, shrimps and other aquatic organisms.

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.