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Photosynthesis and Cellular Respiration

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Although it appears that Photosynthesis has preceded Cellular Respiration by billions of years, the processes share many structural features.

1. Create a table comparing and contrasting the two processes. Include in your comparison variables such as organism type, energy source, cellular location, substrates/reactants/products, full and balanced chemical reaction, carrier molecules, and any other parameter you find relevant.
2. Apart from its essential role in cellular respiration, the mitochondrion is thought to be implicated in a variety of disease states as well as the process of aging. The mitochondrion contains its own circular DNA molecule(s) (termed mtDNA) which largely encodes for proteins localized to the mitochondrion itself. Please provide a hypothesis and suggest an experiment to test the relationship between mtDNA and human aging. Propose a direction for future research and drug development for targeting mtDNA to combat the aging process.

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Solution Preview

Cellular Respiration and photosynthesis are paired processes. Photosynthesis converts light energy into organic molecules (i.e. carbohydrates). These molecules are used as fuel sources in organisms that employ cellular respiration for production of ATP and carbon dioxide.

Although it appears that Photosynthesis has preceded Cellular Respiration by billions of years, the processes share many structural features.

1. Create a table comparing and contrasting the two processes. Include in your comparison variables such as organism type, energy source, cellular location, substrates/reactants/products, full and balanced chemical reaction, carrier molecules, and any other parameter you find relevant.

Photosynthesis Respiration
organisms green plants, some bacteria all living organisms
description light is converted into energy used the chemical bonds of molecules (glucose) are broken for cellular processes, in the ...

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