What process produces oxygen?
photosynthesis
What role does cellular respiration play in the carbon cycle?
Cellular respiration is the process by which organic sugars are broken down to produce energy. It plays a vital rolein the carbon cycle because it releasescarbon dioxide into the atmosphere. This means that cellular respirationcan be thought of as the opposite ofcarbon fixation in the carbon cycle.
What roles do photosynthesis and cellular respiration play in the carbon cycle quizlet?
In the carbon cycle, organisms exchange carbon dioxide with the atmosphere. Cellular respiration releases carbon dioxide, which is used in photosynthesis. Photosynthesis in turn releases oxygen used in respiration. Animals and other heterotrophs depend on green organisms for organic food, energy, and oxygen.
What role does cellular respiration play in?
Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
What is the net ATP production at this stage of cellular respiration?
The energy to split glucose is provided by two molecules of ATP. As glycolysis proceeds, energy is released, and the energy is used to make four molecules of ATP. As a result, there is a net gain of two ATP molecules during glycolysis.
What are the three steps of cellular respiration?
Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. Glycolysis is an anaerobic process. The other two stages are aerobic processes. The products of cellular respiration are needed for photosynthesis, and vice versa.
Which step in cellular respiration produces the most ATP?
The Krebs cycle takes place inside the mitochondria. The Krebs cycle produces the CO2 that you breath out. This stage produces most of the energy ( 34 ATP molecules, compared to only 2 ATP for glycolysis and 2 ATP for Krebs cycle). The electron transport chain takes place in the mitochondria.
Which of the following pathways produces the greatest amount of ATP?
oxidative phosphorylation
In what cell part does most of respiration occur?
mitochondria
What is the role of ATP synthase?
The function of ATP synthase is to synthesize ATP from ADP and inorganic phosphate (Pi) in the F1 sector. This is possible due to energy derived from a gradient of protons which cross the inner mitochondrial membrane from the intermembrane space into the matrix through the Fo portion of the enzyme.
What happens when ATP synthase is blocked?
Oligomycin A inhibits ATP synthase by blocking its proton channel (FO subunit), which is necessary for oxidative phosphorylation of ADP to ATP (energy production). Administering oligomycin to an individual can result in very high levels of lactate accumulating in the blood and urine.
What happens if you inhibit ATP synthase?
Inhibition of the ATP synthase compromises the output of ATP by OXPHOS and rewires energy metabolism to an enhanced glycolysis.
What is the role of ATP synthase in the electron transport chain?
During electron transport, the participating protein complexes push protons from the matrix out to the intermembrane space. This creates a concentration gradient of protons that another protein complex, called ATP synthase, uses to power synthesis of the energy carrier molecule ATP (Figure 2).
Is any ATP used in the electron transport chain?
No ATP is produced in the electron transport chain. Is any ATP used in the electron transport chain? No, the electrons provide energy. The name of the embedded protein that provides a channel for the hydrogen ions to pass through the membrane is ATP synthase.
What is the relationship between the ETC and oxygen?
What is the relationship between the ETC and oxygen? The relationship between the two is that ETC allows cytochrome to pass into it’s final acceptor oxygen.
What is the electron transport chain also known as?
The respiratory chain, otherwise known as the electron transport chain, resides in the mitochondria. The chain consists of a series of electron carriers which can accept and then donate electrons, while the resulting production of energy is used to stimulate the formation of ATP via oxidative phosphorylation.
What is the electron transport chain and why is it important?
The electron transport chain is a system of molecules through which electrons are transferred to generate ATP. It has an important role in both photosynthesis and cellular respiration.
What enzyme is used in the electron transport chain to create ATP?
ATP synthase
How much ATP does the electron transport chain produce?
The electron transport chain is the final step of cellular respiration where 34 ATP molecules are produced.
What is an electron acceptor in cellular respiration?
Explanation: In cellular respiration, oxygen is the final electron acceptor. Oxygen accepts the electrons after they have passed through the electron transport chain and ATPase, the enzyme responsible for creating high-energy ATP molecules.
What are the two primary functions of the electron transport chain?
Explanation: The electron transport chain is primarily used to send protons across the membrane into the intermembrane space. This create a proton-motive force, which will drive ATP synthase in the final step of cellular respiration to create ATP from ADP and a phosphate group.
What is the main goal of the ETC?
What is the purpose of the ETC? The main purpose of the electron transport chain is to build up a surplus of hydrogen ions (protons) in the intermembrane space sp that there will be a concentration gradient compared to the matrix of the mitochondria.
What is the primary function of the electron transport chain quizlet?
The primary purpose of the electron transport chain is to harvest the energy from electrons moving down this pathway to produce ATP and water. The end-result of the electron transport chain is the formation of lactate.
What are the steps of the electron transport chain?
- Step 1: Generating a Proton Motive Force.
- Step Two: ATP Synthesis via Chemiosmosis.
- Step Three: Reduction of Oxygen.
- Summary: Oxidative Phosphorylation.