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Photorespiration is considered wasteful because it consumes energy and releases carbon dioxide without producing necessary compounds for plant growth. It occurs when Rubisco, the enzyme responsible for carbon fixation, adds oxygen to ribulose-1,5-bisphosphate instead of carbon dioxide, leading to nonproductive reactions that reduce the efficiency of photosynthesis.
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Why is photorespiration a waste?
Photorespiration is considered a waste process because it consumes energy and releases carbon dioxide without contributing to the production of carbohydrates, which is the main purpose of photosynthesis. It can reduce the efficiency of photosynthesis and limit plant growth under certain conditions, such as high temperatures or low carbon dioxide levels.
What happens when RuBP reacts with O2?
When RuBP reacts with O2 instead of CO2 in the Calvin cycle, a process known as photorespiration occurs. This results in the synthesis of a compound that can't be used to produce glucose, wasting energy and decreasing the efficiency of photosynthesis.
Is the process of electron affinity for an atom generally considered to be endothermic or exothermic?
The process of electron affinity for an atom is generally considered to be exothermic.
Is the process of plants making sugar through photosynthesis considered endothermic or exothermic?
The process of plants making sugar through photosynthesis is considered endothermic.
Is oxygen considered a gas?
Yes, oxygen is considered a gas. It is a colorless, odorless gas that is essential for supporting life on Earth through the process of respiration.
Why is photorespiration such a waste?
Photorespiration is a wasteful process because: i. About 25 % of the CO2 fixed during photosynthesis is lost ii. There is no formation of ATP & NADH
Does photorespiration produce energy?
No, photorespiration does not produce energy. In fact, it is considered a wasteful process that occurs in plants when there is a lack of carbon dioxide and excess oxygen in the leaf cells. Photorespiration can decrease the efficiency of photosynthesis in plants.
Why is photorespiration wastful process?
Photorespiration is considered wasteful because it consumes energy and resources without producing useful compounds for the plant. It occurs when rubisco enzyme fixes oxygen instead of carbon dioxide, leading to the release of CO2 and consumption of ATP and reducing power. This process reduces the efficiency of photosynthesis and can limit plant growth in certain conditions.
What is photorespiration?
Photorespiration is a process in plants that occurs when rubisco, the enzyme responsible for carbon fixation, uses oxygen instead of carbon dioxide. This can happen in hot or dry conditions, leading to a wasteful process that reduces the efficiency of photosynthesis. Photorespiration can lower the productivity of plants.
Which situation best accounts for photorespiratin in plants?
Photorespiration is more likely to occur in plants when the ratio of oxygen to carbon dioxide is high, such as in hot and dry environments. This leads to Rubisco, the enzyme involved in photosynthesis, fixing oxygen instead of carbon dioxide, resulting in the wasteful process of photorespiration.
What happens during photorespiration?
In photorespiration, O2 replaces CO2 in a non-productive, wasteful reaction. Photorespiration occurs when the CO2 levels inside a leaf become low, which happens on hot dry days when a plant is forced to close its stomata to prevent excess water loss.
Why doesn't photorespiration occur in chemoautotrophs?
Photorespiration occurs in plants because they use oxygen in the Calvin cycle, leading to the wasteful process. Chemoautotrophs do not utilize the Calvin cycle for carbon fixation; instead, they use alternative pathways like the reductive tricarboxylic acid cycle or the 3-hydroxypropionate bi-cycle. This means that they do not produce the same conditions that lead to photorespiration as seen in plants.
What is the difference between photorespiration and respiration?
photorespiration: RuBP accepts oxygen instead of CO2 during photosynthesis because production of oxygen has exceeded production of CO2. respiration: Oxygen is produced in oxidative phosphorylation/chemisosmosis and used to produce water during respiration.
Which takes plae in the chloroplast?
Major process is photosynthesis. Also involve in photorespiration
Can tomato plants show photo respiration?
No, tomato plants do not undergo photorespiration. Photorespiration is a process that occurs in C3 plants, where oxygen is mistakenly used instead of carbon dioxide in the initial steps of photosynthesis. However, tomato plants are classified as C4 plants, which have evolved mechanisms to minimize photorespiration.
Why is photorespiration a waste?
Photorespiration is considered a waste process because it consumes energy and releases carbon dioxide without contributing to the production of carbohydrates, which is the main purpose of photosynthesis. It can reduce the efficiency of photosynthesis and limit plant growth under certain conditions, such as high temperatures or low carbon dioxide levels.
What is the name of the process wherein co2 is released without the production of atp or nadph?
The process you are referring to is called photorespiration. It is a metabolic pathway that releases CO2 without producing ATP or NADPH and occurs in plants when the Calvin cycle is inhibited.
