Table of Contents
- 1 What is the significance of the relationship between photosynthesis and cellular respiration?
- 2 What roles do electrons and hydrogen ions play in the light dependent reactions of photosynthesis?
- 3 How are cellular respiration and photosynthesis similar and different?
- 4 Why does the lumen become positively charged during the light-dependent reactions?
- 5 Where does the H+ come from that makes ATP synthase work a?
What is the significance of the relationship between photosynthesis and cellular respiration?
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
What do cellular respiration and photosynthesis have in common?
Photosynthesis and cellular respiration are two biochemical processes that are essential to most life on Earth. Both of these processes involve multiple complex steps and many of the same molecules—oxygen (O2), carbon dioxide (CO2), water (H2O), glucose (C6H12O6), and adenosine triphosphate (ATP).
What roles do electrons and hydrogen ions play in the light dependent reactions of photosynthesis?
What roles do electrons and hydrogen ions play in the light-dependent reactions of photosynthesis? Water is broken down into hydrogen ions, electrons, and oxygen gas. Electrons used for energy in photosynthesis but not for general cell needs. Electron energy is then used to make molecules that act as energy carriers.
What is the significance of ATP synthase in both photosynthesis and cellular respiration?
The function of ATP synthase is to produce ATP. ATP is necessary to power all cellular processes, so it is constantly being used by cells and constantly needs to be produced. Each ATP synthase can produce about 100 molecules of ATP every second.
How are cellular respiration and photosynthesis similar and different?
Photosynthesis involves the use of energy from sunlight, water and carbon dioxide to produce glucose and oxygen. Cellular respiration uses glucose and oxygen to produce carbon dioxide and water. For example, both processes synthesize and use ATP, the energy currency.
How does the equation relate to both photosynthesis and cellular respiration and what is the connection between the two processes?
Photosynthesis and cellular respiration are connected through an important relationship. Notice that the equation for cellular respiration is the direct opposite of photosynthesis: Cellular Respiration: C6H12O6 + 6O2 → 6CO2 + 6H2O. Photosynthesis: 6CO2 + 6H2O → C6H12O6+ 6O.
Why does the lumen become positively charged during the light-dependent reactions?
Why does the space inside the thylakoid become positively charged during the light-dependent reactions? ATP synthase helps H+ ions in the thylakoid space to pass through the membrane to the stroma.
What role do hydrogen ions play in the process of energy production?
The hydrogen ions are allowed to pass through the thylakoid membrane through an embedded protein complex called ATP synthase. The energy generated by the hydrogen ion stream allows ATP synthase to attach a third phosphate to ADP, which forms a molecule of ATP in a process called photophosphorylation.
Where does the H+ come from that makes ATP synthase work a?
inner mitochondrial membrane
The electrons from from NADH and FADH2 flow through the electron transport chain in the inner mitochondrial membrane generating a H+ buildup in the inner membrane space. This proton gradient (gradient of H+) flowing through the membrane enzyme complex ATP synthetase is the direct energy source for producing ATP.