Construct a food chain with the following organisms-snake, hawk, rats and plants

Plants eaten by rats, rat eaten by snake and snake eaten by hawk.

Explanation:

Food chain may be defined as the sequential tropic levels of organism being eaten by other organisms. Food chains combine together in the environment to form food web.

Food chain starts with the producer (plants). Plants are eaten by the consumers present at first trophic level (rat). Second trophic level organisms eat the organism of first trophic level (snake). Third trophic level organism feeds on the second trophic level (hawk).

Thus, the food chain is plants eaten by rats, rat eaten by snake and snake eaten by hawk.

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.

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