The Apollo 13 crew DID shut down the reactant valves when ordered to by mission control.
They were asked to shut down the Oxygen reactant valves to two of the three fuel cell in a vain effort to stop the venting of the oxygen into space.
The reason there was a slight reluctance for mission control to order the valve shutdown, is that once closed, these valves cannot be re-opened and the two fuel cellls would then become unusable.
Mission rules state that there must be at least two fully functioning fuel cells before a landing can be attempted. shutting down the two reactant valves effectively aborted the landing mission. However the true damage to the spacecraft was so severe that this was a moot point anyway, and the landing would have to have been aborted in any case.
carbon dioxide and water (with sunlight and chlorophyll - in chloroplasts)
Enzymes are biological catalysts that lower the activation energy of reactions in cells. They speed up chemical reactions by binding to reactant molecules and facilitating the conversion of substrates to products. Enzymes are essential for various cellular processes due to their ability to accelerate reactions.
The energy to make NADPH in the light reactions of photosynthesis comes from sunlight. Light energy is absorbed by chlorophyll molecules in the chloroplasts of plant cells, which triggers a series of reactions that ultimately produce NADPH.
Oxygen is a product of respiration by plants that contain chlorophyll and consume carbon dioxide. Oxygen is a reactant in respiration by air-breathing animals.
Electrochemical oxidation is a process where a substance undergoes oxidation reactions through the application of an electrical current. It involves the transfer of electrons at an electrode surface, leading to the oxidation of a reactant. This process is commonly used in electrochemical cells and plays a key role in various applications such as water treatment and energy storage.
None of the Apollo spacecrafts has solar cells. All of them used fuel cells and chemical batteries to provide energy.
it is micro in cells. i wouldnt classify it as an animal though.
oxygen...got it from studyisland
Oxygen
Valves
Cells are formed so that you can be who you are, without cells you wouldnt be in this world cells are what make up every single part of your body even the smallest part, your skin, bones, insides, everything that is living or was once living is made up of cells.
Carbohydrates, lipids, proteins, and nucleic acids.
The Krebs cycle uses acetyl CoA as a reactant.
Apollo 13's power source was primarily provided by fuel cells that converted hydrogen and oxygen into electricity. These fuel cells were essential for providing electricity to the spacecraft for various systems and experiments. In addition to the fuel cells, Apollo 13 also had batteries as a backup power source in case of any malfunctions.
Valves are used to open/ to let in red blood cells and to clos when they are done this is also the sound of your heart beat is the vavles opening and closing
Valves are used to open/ to let in red blood cells and to clos when they are done this is also the sound of your heart beat is the vavles opening and closing
Apollo 13 was powered by a combination of fuel cells and batteries. The primary source of power for the spacecraft was from three hydrogen-oxygen fuel cells, which generated electricity by combining hydrogen and oxygen in a chemical reaction. In addition to the fuel cells, there were also batteries on board that provided backup power.