Question

Какова роль воды и углекислого газа при фотосинтезе? ​

Answer 1

Ответ:

Электроны хлорофилла, возбужденные солнечным светом, проходят по электронотранспортным цепям и отдают свою энергию на образование АТФ и НАДФ-Н.

Роль углекислого газа воздуха состоит в том, что из него образуются сахара и крахмал. Углекислый газ поступает отчасти посредством диффузии через кутикулу и эпидермис, однако большая его часть диффундирует в лист через устьица и по листу по межклеточному пространству.

Объяснение:

Answer 2

The Role of Water and Carbon Dioxide in Photosynthesis

Photosynthesis is the process by which plants, algae, and some bacteria convert sunlight, water, and carbon dioxide into glucose (a type of sugar) and oxygen. This process is crucial for the production of oxygen and the formation of organic compounds, which serve as the basis for the food chain.

Water plays a vital role in photosynthesis as it serves as a source of hydrogen atoms needed for the synthesis of glucose. During photosynthesis, water molecules are split into hydrogen ions (H+) and oxygen atoms (O). The hydrogen ions are then used in the synthesis of glucose, while the oxygen atoms are released as a byproduct. This process is known as photolysis or the light-dependent reaction.

The carbon dioxide (CO2) that plants take in from the atmosphere is another essential component of photosynthesis. Carbon dioxide molecules are broken down during the process, and the carbon atoms are used to build glucose molecules. This process is known as the Calvin cycle or the light-independent reaction.

In summary, water provides the necessary hydrogen atoms, while carbon dioxide provides the carbon atoms needed for the synthesis of glucose during photosynthesis. The oxygen released as a byproduct of photosynthesis is essential for sustaining life on Earth.