Why is photorespiration wasteful? BecauseGroup of answer choicesOrganic carbon is converted into CO2 without the production of ATPOrganic carbon is converted into CO2 without the production of ATP and NADPHOrganic carbon is converted into CO2 without the production of ATP, NADPH or another energy-rich metaboliteOxygen is consumed and CO2 is releasedGlycolate is formed instead of CO2
Question
Why is photorespiration wasteful? BecauseGroup of answer choicesOrganic carbon is converted into CO2 without the production of ATPOrganic carbon is converted into CO2 without the production of ATP and NADPHOrganic carbon is converted into CO2 without the production of ATP, NADPH or another energy-rich metaboliteOxygen is consumed and CO2 is releasedGlycolate is formed instead of CO2
Solution
Photorespiration is considered wasteful because it converts organic carbon into CO2 without the production of ATP. In normal photosynthesis, organic carbon is converted into glucose, which stores energy in the form of ATP and NADPH. However, during photorespiration, the process is disrupted and instead of producing ATP and NADPH, organic carbon is converted directly into CO2. This means that the energy stored in the organic carbon is lost without being utilized. Additionally, photorespiration consumes oxygen and releases CO2, further contributing to its wasteful nature. In contrast, in normal photosynthesis, oxygen is released as a byproduct and CO2 is used to produce glucose. Another consequence of photorespiration is the formation of glycolate instead of CO2, which further reduces the efficiency of carbon fixation. Overall, photorespiration is considered wasteful because it bypasses the normal energy-producing steps of photosynthesis and results in the loss of organic carbon and energy.
Similar Questions
A metabolic pathway that consumes oxygen (O₂) and ATP, releases carbon dioxide (CO₂), and decreases photosynthetic output.Group of answer choicesphotosynthesislight reactionscarbon fixationCalvin cyclelinear electron flowcyclic electron flowphotophosphorylationphotorespiration
Why is it a problem that rubisco engages in photorespiration?Group of answer choicesBecause it wastes H+ that could be used by the light reactions to make ATPBecause it wastes energy that could be used to make glucoseThis is not a problem for plant cells, it is necessary for their survivalBecause it causes the mitochondria in plant cells to photosynthesiseBecause it prevents photosystems from absorbing light
Write the scientific term:1. A process in which producers consume carbon dioxide andrelease oxygen.(............................)2. A process in which organisms liberate energy in the presence ofoxygen.(............................)Choose the correct answer:1. Photosynthesis, cellular respiration, and combustion are the main processes incarbon–oxygen cycles.a.True b. False2. Carbon is an essential element in bones and proteins.a.True b. False3. Producers use carbon dioxide during cellular respiration.a.True b. False4. No relation between the carbon cycle and the oxygen cycle.a.True b. FalseWhat happens if:1. Burning trees. (according to the amount of oxygen and carbon dioxide)................................................................................................................................................................................................................................2. Elevation of carbon dioxide percentage in the air (open question)................................................................................................................................................................................................................................Topic 8 (L3) Page 219 – 220
What is the main by-product of respiration?Group of answer choicesCarbon dioxideCellular wasteATPOxygen
Which of the following is true of cellular respiration but not of photosynthesis? Cellular respiration releases energy from glucose. Cellular respiration releases oxygen gas as a product. Cellular respiration is a process in which glucose is formed. Cellular respiration requires carbon dioxide and water as reactants.
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