Compare Respiration and Photosynthesis Models - Biology
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Which organelle is the primary site of aerobic cellular respiration in eukaryotic cells?
Which organelle is the primary site of aerobic cellular respiration in eukaryotic cells?
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Mitochondrion. Contains cristae and matrix where respiration reactions occur.
Mitochondrion. Contains cristae and matrix where respiration reactions occur.
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Which molecules are products of photosynthesis (as modeled in the overall equation)?
Which molecules are products of photosynthesis (as modeled in the overall equation)?
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Glucose ($C_6H_{12}O_6$) and $O_2$. These molecules are synthesized and released during photosynthesis.
Glucose ($C_6H_{12}O_6$) and $O_2$. These molecules are synthesized and released during photosynthesis.
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Identify the correct classification: photosynthesis is anabolic or catabolic?
Identify the correct classification: photosynthesis is anabolic or catabolic?
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Anabolic. Photosynthesis builds complex molecules from simple precursors.
Anabolic. Photosynthesis builds complex molecules from simple precursors.
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Which process is best described as releasing energy from chemical bonds to make ATP?
Which process is best described as releasing energy from chemical bonds to make ATP?
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Cellular respiration. Breaks down molecules to harvest energy for ATP production.
Cellular respiration. Breaks down molecules to harvest energy for ATP production.
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Which process is endergonic overall (requires net energy input)?
Which process is endergonic overall (requires net energy input)?
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Photosynthesis. Requires continuous energy input from light to proceed.
Photosynthesis. Requires continuous energy input from light to proceed.
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Which process occurs in both autotrophs and heterotrophs to supply ATP?
Which process occurs in both autotrophs and heterotrophs to supply ATP?
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Cellular respiration. All living organisms require ATP for cellular activities.
Cellular respiration. All living organisms require ATP for cellular activities.
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Which process is best described as storing energy in chemical bonds?
Which process is best described as storing energy in chemical bonds?
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Photosynthesis. Builds complex molecules by storing energy in chemical bonds.
Photosynthesis. Builds complex molecules by storing energy in chemical bonds.
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Which gas is released as a byproduct when carbon is oxidized in respiration?
Which gas is released as a byproduct when carbon is oxidized in respiration?
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Carbon dioxide ($CO_2$). Breaking carbon-carbon bonds releases $CO_2$ during oxidation.
Carbon dioxide ($CO_2$). Breaking carbon-carbon bonds releases $CO_2$ during oxidation.
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Which gas is released as a byproduct of splitting water in photosynthesis?
Which gas is released as a byproduct of splitting water in photosynthesis?
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Oxygen ($O_2$). Splitting water molecules releases oxygen as a waste product.
Oxygen ($O_2$). Splitting water molecules releases oxygen as a waste product.
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Which molecule is the main electron donor that is split during light reactions?
Which molecule is the main electron donor that is split during light reactions?
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Water ($H_2O$). Water molecules are split to provide electrons for photosynthesis.
Water ($H_2O$). Water molecules are split to provide electrons for photosynthesis.
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Identify the correct classification: cellular respiration is anabolic or catabolic?
Identify the correct classification: cellular respiration is anabolic or catabolic?
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Catabolic. Respiration breaks down complex molecules into simpler products.
Catabolic. Respiration breaks down complex molecules into simpler products.
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Which organisms typically perform photosynthesis: autotrophs or heterotrophs?
Which organisms typically perform photosynthesis: autotrophs or heterotrophs?
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Autotrophs (plants, algae, some bacteria). These organisms can synthesize glucose from inorganic carbon.
Autotrophs (plants, algae, some bacteria). These organisms can synthesize glucose from inorganic carbon.
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Which model component captures light energy in photosynthesis: chlorophyll or ATP synthase?
Which model component captures light energy in photosynthesis: chlorophyll or ATP synthase?
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Chlorophyll (in photosystems). Chlorophyll molecules absorb photons to initiate electron transport.
Chlorophyll (in photosystems). Chlorophyll molecules absorb photons to initiate electron transport.
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Which pigment-containing structures in thylakoids initiate electron transport in photosynthesis?
Which pigment-containing structures in thylakoids initiate electron transport in photosynthesis?
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Photosystems (PSII and PSI). These complexes contain chlorophyll and drive light reactions.
Photosystems (PSII and PSI). These complexes contain chlorophyll and drive light reactions.
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Identify the correct classification: photosynthesis is anabolic or catabolic?
Identify the correct classification: photosynthesis is anabolic or catabolic?
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Anabolic. Photosynthesis builds complex molecules from simple precursors.
Anabolic. Photosynthesis builds complex molecules from simple precursors.
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Which molecules are reactants in aerobic cellular respiration (overall model)?
Which molecules are reactants in aerobic cellular respiration (overall model)?
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Glucose ($C_6H_{12}O_6$) and $O_2$. These starting materials are consumed during aerobic respiration.
Glucose ($C_6H_{12}O_6$) and $O_2$. These starting materials are consumed during aerobic respiration.
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Which molecules are products of aerobic cellular respiration (overall model)?
Which molecules are products of aerobic cellular respiration (overall model)?
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$CO_2$, $H_2O$, and ATP. These waste products and energy currency are made during respiration.
$CO_2$, $H_2O$, and ATP. These waste products and energy currency are made during respiration.
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Which organelle is the primary site of photosynthesis in eukaryotic cells?
Which organelle is the primary site of photosynthesis in eukaryotic cells?
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Chloroplast. Contains thylakoids and stroma where photosynthesis reactions occur.
Chloroplast. Contains thylakoids and stroma where photosynthesis reactions occur.
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Which photosynthesis stage occurs in thylakoid membranes and requires light?
Which photosynthesis stage occurs in thylakoid membranes and requires light?
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Light-dependent reactions. Captures light energy and splits water to generate electrons.
Light-dependent reactions. Captures light energy and splits water to generate electrons.
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Which photosynthesis stage occurs in the stroma and fixes carbon into sugars?
Which photosynthesis stage occurs in the stroma and fixes carbon into sugars?
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Calvin cycle (light-independent reactions). Uses ATP and NADPH to reduce $CO_2$ into sugar.
Calvin cycle (light-independent reactions). Uses ATP and NADPH to reduce $CO_2$ into sugar.
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Which respiration stage occurs in the cytoplasm and splits glucose into pyruvate?
Which respiration stage occurs in the cytoplasm and splits glucose into pyruvate?
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Glycolysis. Breaks glucose into two pyruvate molecules with net ATP gain.
Glycolysis. Breaks glucose into two pyruvate molecules with net ATP gain.
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Which respiration stage occurs in the mitochondrial matrix and releases $CO_2$?
Which respiration stage occurs in the mitochondrial matrix and releases $CO_2$?
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Citric acid cycle (Krebs cycle). Oxidizes acetyl-CoA completely, releasing $CO_2$ and electron carriers.
Citric acid cycle (Krebs cycle). Oxidizes acetyl-CoA completely, releasing $CO_2$ and electron carriers.
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Which respiration stage uses the inner mitochondrial membrane to make most ATP?
Which respiration stage uses the inner mitochondrial membrane to make most ATP?
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Electron transport chain and chemiosmosis (oxidative phosphorylation). Uses electron flow to pump protons and drive ATP synthesis.
Electron transport chain and chemiosmosis (oxidative phosphorylation). Uses electron flow to pump protons and drive ATP synthesis.
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Which molecule is the final electron acceptor in aerobic cellular respiration?
Which molecule is the final electron acceptor in aerobic cellular respiration?
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Oxygen ($O_2$). Receives electrons at the end of the transport chain.
Oxygen ($O_2$). Receives electrons at the end of the transport chain.
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Which molecule is reduced to form water at the end of aerobic respiration?
Which molecule is reduced to form water at the end of aerobic respiration?
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Oxygen ($O_2$) is reduced to $H_2O$. Oxygen accepts electrons and combines with protons to form water.
Oxygen ($O_2$) is reduced to $H_2O$. Oxygen accepts electrons and combines with protons to form water.
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What type of energy conversion is modeled by photosynthesis in plants?
What type of energy conversion is modeled by photosynthesis in plants?
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Light energy is converted to chemical energy in glucose. Photosynthesis converts radiant energy into stored chemical bonds.
Light energy is converted to chemical energy in glucose. Photosynthesis converts radiant energy into stored chemical bonds.
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What type of energy conversion is modeled by cellular respiration in cells?
What type of energy conversion is modeled by cellular respiration in cells?
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Chemical energy in glucose is converted to ATP. Respiration breaks glucose bonds to synthesize ATP for cellular work.
Chemical energy in glucose is converted to ATP. Respiration breaks glucose bonds to synthesize ATP for cellular work.
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What is the balanced overall equation for photosynthesis?
What is the balanced overall equation for photosynthesis?
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$6CO_2 + 6H_2O + light \rightarrow C_6H_{12}O_6 + 6O_2$. Six $CO_2$ and water plus light yield glucose and oxygen.
$6CO_2 + 6H_2O + light \rightarrow C_6H_{12}O_6 + 6O_2$. Six $CO_2$ and water plus light yield glucose and oxygen.
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Which molecules are products of photosynthesis (as modeled in the overall equation)?
Which molecules are products of photosynthesis (as modeled in the overall equation)?
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Glucose ($C_6H_{12}O_6$) and $O_2$. These molecules are synthesized and released during photosynthesis.
Glucose ($C_6H_{12}O_6$) and $O_2$. These molecules are synthesized and released during photosynthesis.
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Which option correctly pairs process with location: Calvin cycle or citric acid cycle?
Which option correctly pairs process with location: Calvin cycle or citric acid cycle?
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Calvin: stroma; citric acid: mitochondrial matrix. Each cycle occurs in its organelle's specific compartment.
Calvin: stroma; citric acid: mitochondrial matrix. Each cycle occurs in its organelle's specific compartment.
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