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Cellular Respiration and Photosynthesis
Plants make their own food by photosynthesis. Carbon dioxide and water react together in the presence of light and chlorophyll to make glucose and oxygen. The glucose is converted into starch, fats and oils for storage. It is used to make cellulose for cell walls, and proteins for growth and repair. It is also used by the plant to release energy by respiration.
Three separate pathways combine to form the process of cellular respiration. The first two, glycolysis and the Krebs cycle, break down food molecules. The third pathway, oxidative phosphorylation, transfers the energy from the food molecules to ATP. Here are the basics of how cellular respiration works:
Cellular Respiration and Photosynthesis Flashcards | …
Cellular respiration produces CO2 as a metabolic waste. This CO2 binds with water to form carbonic acid, helping to maintain the blood's . Since too much CO2 would lower the blood's pH too much, the removal of the excess CO2 must be accomplished on an ongoing basis.
Autotrophs and heterotrophs do cellular respiration to break down food to transfer the energy from food to ATP. The cells of animals, plants, and many bacteria use oxygen to help with the energy transfer during cellular respiration; in these cells, the type of cellular respiration that occurs is aerobic respiration (aerobic means “with air”).
What's the difference between Cellular Respiration and Photosynthesis
Cellular respiration is essential to the transfer of matter and energy through living systems. As living things use cellular respiration to transfer energy from food to ATP, some of the available energy in the food is transferred to the environment as heat, which travels through our atmosphere and goes back out to space. This energy transfer to heat occurs because cellular respiration isn’t 100 percent efficient at capturing the energy from food into ATP.
Cellular respiration is also important in the movement of matter through living systems: As living things break down food molecules using cellular respiration, they release the atoms from the food molecules back out into the environment as carbon dioxide and water. Photosynthesis brings in carbon dioxide and water from the environment, and cellular respiration sends them out again, forming a circular matter pathway that scientists call the carbon cycle.
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What role does water play in cellular respiration and photosynthesis
At the end of the entire process of cellular respiration, the energy transferred from glucose is stored in 36 to 38 molecules of ATP, which are available to be used for cellular work. (And boy do they get used quickly!)
What is the role of NADH in cellular respiration
Blood vessels deliver nutrients
and oxygen to the cells Glucose diffuses into the cell through an open protein doorway (Does this process use energy?) Oxygen diffuses into the cell
through the phospholipid bilayer
(does this process use energy?) Glucose Pyruvate 2 ATP made 10 Enzymes
used Anaerobic Respiration
(does NOT use Oxygen
to make ATP) Pyruvate goes to
the mitochondria for
Aerobic Respiration Aerobic Respiration
(DOES use oxygen to make ATP) Cellular Respiration Making ATP (energy) 2 Types (Does NOT
use oxygen to
make ATP) Anaerobic Aerobic (DOES
use oxygen to
make ATP) Oxygen can either be released or used in CELLULAR RESPIRATION Do plants (or any organisms that use photosynthesis) need animals/humans to live?
biology photosynthesis and cellular respiration Flashcards | Quizlet
In respiration energy is released fromsugars when electrons associated with hydrogen are transported to oxygen (theelectron acceptor), and water is formed as a byproduct. The mitochondriause the energy released in this oxidation in order to synthesize ATP. Inphotosynthesis, the electron flow is reversed, the water is split (not formed),and the electrons are transferred from the water to CO2 and in theprocess the energy is used to reduce the CO2 into sugar. Inrespiration the energy yield is 686 kcal per mole of glucose oxidized to CO2,while photosynthesis requires 686 kcal of energy to boost the electrons from thewater to their high-energy perches in the reduced sugar -- light provides thisenergy.
Photosynthesis and Cellular Respiration - Prezi
Different kinds of food molecules enter cellular respiration at different points in the pathway. Cells break down simple sugars, such as glucose, in the first pathway — glycolysis. Cells use the second pathway, the Krebs cycle, for breaking down fatty acids and amino acids.
Photosynthesis and Cellular Respiration - YouTube
NAD+ and FAD act like electron shuttle buses for the cell. The empty buses, NAD+ and FAD, drive up to oxidation reactions and collect electron passengers. When the electrons get on the bus, the driver puts up the H sign to show that the bus is full. Then the full buses, NADH and FADH2, drive over to reactions that need electrons and let the passengers off. The buses are now empty again, so they drive back to another oxidation reaction to collect new passengers. During cellular respiration, the electron shuttle buses drive a loop between the reactions of glycolysis and the Krebs cycle (where they pick up passengers) to the electron transport chain (where they drop off passengers).
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