Cell Resp & Photosynthesis Quiz

Froggy Jumps

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Test your understanding of CR and PS basics.

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Invisible chan

United States

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Cell Resp & Photosynthesis Quiz


Froggy Jumps Cell Resp & Photosynthesis QuizVersion en ligne Test your understanding of CR and PS basics. par Invisible chan 1 What is chemiosmosis in cellular respiration? a Proton flow through ATP synthase drives ATP production b ATP forms protons that power mitochondria c Direct electron transfer to oxygen creates ATP 2 Which molecule accepts electrons in the ETC of CR? a NADH2 b Oxygen (O2) c CO2 3 What are the end products of cellular respiration? a CO2 and H2O b O2 and glucose c CH4 and O2 4 Glycolysis occurs where in the cell? a Nucleus b mitochondrion c Cytosol 5 Which cycle feeds acetyl CoA into the Krebs cycle? a Glycolysis b Pyruvate oxidation c Calvin cycle 6 Which pigment is the main energy absorber in PS? a Carotene b Chlorophyll c Anthocyanin 7 What is the primary purpose of the Calvin cycle? a Split water to form O2 b Carbon fixation to build sugars c Harvest photons for ATP 8 Which process yields the most ATP per glucose? a Oxidative phosphorylation (ETC/OxPhos) b Fermentation c Glycolysis 9 CAM plants fix carbon at night to keep stomates closed during heat. True or false? a False b Only in deserts c True 10 RuBP is regenerated in which cycle stage? a Glycolysis b Calvin cycle c Citric acid cycle 11 What is the overall chemical equation for photosynthesis? a 6CO2 + 6H2O + light → C6H12O6 + 6O2 b O2 + glucose → CO2 + H2O + energy c C6H12O6 → 6CO2 + 6H2O + light 12 Which pigment is the main energy converter in photosynthesis? a Chlorophyll b Carotenoids c Xanthophylls 13 What pigment absorbs green light and is visible in autumn leaves? a Auxiliary pigments (carotenoids/anthocyanins) b Chlorophyll only c Phycobilins only 14 Which process yields the most ATP per glucose molecule? a Fermentation b Oxidative phosphorylation (ETC/ chemiosmosis) in cell respiration c Glycolysis 15 What are the two main products of photosynthesis that are released? a NADH and ATP b CO2 and water c O2 and glucose 16 Glycolysis occurs where in the cell? a M mitochondria b Nucleus c Cytosol (cytoplasm) 17 Which molecule accepts electrons in the mitochondria during respiration? a NAD+ (to NADH) and FAD (to FADH2) b O2 only c CO2 only 18 Which organelle is central to cellular respiration energy production? a Nucleus b Chloroplast c Mitochondrion 19 What happens to chlorophyll and leaves as days get shorter? a Chlorophyll degrades and auxiliary pigments become visible b Chlorophyll increases; leaves stay green c Chlorophyll moves to roots 20 Which statement best describes chemiosmosis? a Proton gradient drives ATP synthesis across membranes b Direct electron transfer makes ATP c ATP is consumed to pump protons 21 What is the main energy molecule produced by cellular respiration? a FADH2 b ATP c NADH 22 Which organelle is the site of respiration in eukaryotic cells? a Nucleus b Chloroplast c Mitochondria 23 During glycolysis, how many net ATP are produced per glucose? a 0 ATP b 4 ATP c 2 ATP 24 What molecule is the final electron acceptor in aerobic respiration? a Oxygen b Carbon Dioxide c Nitrogen 25 Which process directly uses light to produce chemical energy in plants? a Cellular Respiration b Fermentation c Photosynthesis 26 Which pigment primarily captures light energy for photosynthesis? a Chlorophyll b Hemoglobin c Carotene 27 What is the main purpose of the electron transport chain in mitochondria? a To generate a proton gradient for ATP synthesis b To synthesize glucose c To break down DNA 28 Which process can occur without oxygen to regenerate NAD+? a Oxidative phosphorylation b Fermentation c Fermentative respiration 29 In photosynthesis, which gas is released as a byproduct? a Nitrogen b Carbon dioxide c Oxygen 30 Glycolysis occurs in which part of the cell? a Mitochondrial matrix b Chloroplast stroma c Cytosol 31 In mitochondria, what is the primary role of NADH and FADH2? a Donating electrons to the electron transport chain b Storing genetic information c Pumping protons across the membrane directly 32 Oxygen functions as what in the electron transport chain? a Final electron acceptor b Proton donor c Allosteric activator 33 What is the approximate ATP yield per glucose via oxidative phosphorylation? a 4 ATP b 32–38 ATP c 10 ATP 34 Which membrane component drives ATP synthesis through chemiosmosis? a ATP synthase b RuBisCO c Cytochrome c 35 Which pigment initiates light reactions of photosynthesis? a Phycocyanin b Carotene c Chlorophyll 36 Rubisco catalyzes the fixation of CO2 in which cycle? a Calvin cycle b Krebs cycle c Glycolysis 37 CAM plants store CO2 at night to fix it during the day. What is the purpose? a Increase Rubisco affinity b Increase photosystem II activity c Stomata stay closed to conserve water 38 Glycolysis produces net how many ATP per glucose under anaerobic conditions? a 2 ATP b 0 ATP c 18 ATP 39 What is the immediate product of glycolysis that enters mitochondria? a Acetyl-CoA b Lactate c Pyruvate 40 Which coenzymes carry electrons to the mitochondrial electron transport chain? a NAD+, NADP+ b NADH and FADH2 c NADPH and FAD 41 In the ETC, electrons flow through a series of carriers to drive what? a Direct ATP hydrolysis b DNA replication c Proton pumping across the membrane 42 Which molecule is produced when water is split in photosystem II? a Water b Oxygen c Hydrogen peroxide 43 Which process yields the most ATP per glucose? a Glycolysis b Oxidative phosphorylation c Fermentation 44 The proton motive force is established primarily by which gradient? a Chlorophyll concentration b Membrane potential alone c Proton concentration across the membrane 45 Which cycle regenerates RuBP for CO2 fixation? a Krebs cycle b Glycolysis c Calvin cycle 46 Which molecule directly feeds carbon into glycolysis after Calvin cycle output? a RuBP b CO2 c G3P (PGAL) 47 What is the role of NAD+ in catabolic pathways? a Electron donor b Proton pump c Electron carrier accepting electrons 48 Which statement best describes gross vs net energy accounting in metabolism? a Net equals gross energy; no losses b Gross is energy after maintenance c Gross is total energy; net subtracts losses 49 Which organelle hosts the electron transport chain in eukaryotes? a Nucleus membrane b Mitochondrial inner membrane c Chloroplast thylakoid 50 What is the primary purpose of the Krebs (citric acid) cycle? a Directly produce ATP only b Synthesize glucose from pyruvate c Generate NADH and FADH2 for the ETC 51 Which molecule is reduced to NADH during glycolysis and the Krebs cycle? a FAD b NAD+ c NADP+ 52 Which statement about photosynthesis is true? a PS occurs only in roots b CR requires light directly c PS and CR are complementary processes 53 Which process is strictly anaerobic? a Oxidative phosphorylation b Glycolysis (in the cytosol, before CR) c Calvin cycle 54 What is PGAL in the Calvin cycle equivalent to in glycolysis? a G3P b Pyruvate c RuBP 55 Which condition favors CAM photosynthesis mechanistically? a High temperature and aridity with stomatal closure b Low light intensity c Excess rainfall 56 Which statement about anaerobic respiration is correct? a Glycolysis is common to both aerobic and anaerobic pathways b O2 is required for glycolysis c Fermentation occurs only in plants 57 Which enzyme catalyzes carbon fixation in the Calvin cycle? a ATP synthase b Cytochrome c oxidase c Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) 58 In photosynthesis, where is the proton gradient generated? a Lamella exterior b Stroma only c Thylakoid membrane lumen 59 Which component accepts electrons from NADH in the ETC to pump protons? a Cytochrome chain complexes b ATP synthase alone c Rubisco

Cell Resp & Photosynthesis Quiz

Froggy Jumps

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Cell Resp & Photosynthesis QuizVersion en ligne

par Invisible chan

What is chemiosmosis in cellular respiration?

Which molecule accepts electrons in the ETC of CR?

What are the end products of cellular respiration?

Glycolysis occurs where in the cell?

Which cycle feeds acetyl CoA into the Krebs cycle?

Which pigment is the main energy absorber in PS?

What is the primary purpose of the Calvin cycle?

Which process yields the most ATP per glucose?

CAM plants fix carbon at night to keep stomates closed during heat. True or false?

RuBP is regenerated in which cycle stage?

What is the overall chemical equation for photosynthesis?

Which pigment is the main energy converter in photosynthesis?

What pigment absorbs green light and is visible in autumn leaves?

Which process yields the most ATP per glucose molecule?

What are the two main products of photosynthesis that are released?

Glycolysis occurs where in the cell?

Which molecule accepts electrons in the mitochondria during respiration?

Which organelle is central to cellular respiration energy production?

What happens to chlorophyll and leaves as days get shorter?

Which statement best describes chemiosmosis?

What is the main energy molecule produced by cellular respiration?

Which organelle is the site of respiration in eukaryotic cells?

During glycolysis, how many net ATP are produced per glucose?

What molecule is the final electron acceptor in aerobic respiration?

Which process directly uses light to produce chemical energy in plants?

Which pigment primarily captures light energy for photosynthesis?

What is the main purpose of the electron transport chain in mitochondria?

Which process can occur without oxygen to regenerate NAD+?

In photosynthesis, which gas is released as a byproduct?

Glycolysis occurs in which part of the cell?

In mitochondria, what is the primary role of NADH and FADH2?

Oxygen functions as what in the electron transport chain?

What is the approximate ATP yield per glucose via oxidative phosphorylation?

Which membrane component drives ATP synthesis through chemiosmosis?

Which pigment initiates light reactions of photosynthesis?

Rubisco catalyzes the fixation of CO2 in which cycle?

CAM plants store CO2 at night to fix it during the day. What is the purpose?

Glycolysis produces net how many ATP per glucose under anaerobic conditions?

What is the immediate product of glycolysis that enters mitochondria?

Which coenzymes carry electrons to the mitochondrial electron transport chain?

In the ETC, electrons flow through a series of carriers to drive what?

Which molecule is produced when water is split in photosystem II?

Which process yields the most ATP per glucose?

The proton motive force is established primarily by which gradient?

Which cycle regenerates RuBP for CO2 fixation?

Which molecule directly feeds carbon into glycolysis after Calvin cycle output?

What is the role of NAD+ in catabolic pathways?

Which statement best describes gross vs net energy accounting in metabolism?

Which organelle hosts the electron transport chain in eukaryotes?

What is the primary purpose of the Krebs (citric acid) cycle?

Which molecule is reduced to NADH during glycolysis and the Krebs cycle?

Which statement about photosynthesis is true?

Which process is strictly anaerobic?

What is PGAL in the Calvin cycle equivalent to in glycolysis?

Which condition favors CAM photosynthesis mechanistically?

Which statement about anaerobic respiration is correct?

Which enzyme catalyzes carbon fixation in the Calvin cycle?

In photosynthesis, where is the proton gradient generated?

Which component accepts electrons from NADH in the ETC to pump protons?