1 Which of the following is produced during alcoholic fermentation? A Lactic acid and ATP B Ethanol and carbon dioxide C Pyruvic acid and oxygen D Glucose and water
2 In which organelle does photosynthesis take place? A Mitochondria B Chloroplast C Nucleus D Ribosome
3 Where in a eukaryotic cell does glycolysis occur? A Mitochondrial matrix B Inner mitochondrial membrane C Cytoplasm D Nucleus
5 Which type of fermentation produces ethanol and carbon dioxide? A Lactic acid fermentation B Alcoholic fermentation C Aerobic respiration D Photosynthesis
6 Which product is formed when skeletal muscles carry out lactic acid fermentation? A Ethanol and carbon dioxide B Lactic acid only C Glucose and oxygen D Acetyl-CoA and NADH
7 What is the role of oxygen in aerobic respiration? A It is the final electron acceptor in the electron transport chain B It breaks down glucose directly C It produces ATP by substrate-level phosphorylation D It is a product of the Krebs cycle
9 Which process produces the most ATP in aerobic respiration? A Glycolysis B Krebs cycle C Electron transport chain D Fermentation
10 What is the source of oxygen released during photosynthesis? A Carbon dioxide B Glucose C Water D ATP
11 Where is the electron transport chain located in aerobic respiration? A Cytoplasm B Mitochondrial matrix C Inner mitochondrial membrane D Outer mitochondrial membrane
12 What is the correct sequence of aerobic respiration? A Glycolysis → Krebs cycle → Electron transport chain B Krebs cycle → Glycolysis → Electron transport chain C Electron transport chain → Glycolysis → Krebs cycle D Glycolysis → Electron transport chain → Krebs cycle
13 Where does glycolysis occur in the cell? A Mitochondrial matrix B Cytoplasm C Inner mitochondrial membrane D Stroma
14 Which pigment absorbs red and blue light most effectively? A Chlorophyll a B Carotenoid C Chlorophyll b D Xanthophyll
15 In which part of the chloroplast do light-dependent reactions occur? A Stroma B Thylakoid membrane C Outer membrane D Intermembrane space
16 Which part of the ATP molecule stores the energy that is released when ATP is hydrolyzed to ADP? A The adenine ring B The ribose sugar C The bond between the second and third phosphate groups D The bond between adenine and ribose
17 Which pigment is the main photosynthetic pigment? A Chlorophyll-a B Chlorophyll-b C Carotenoid D Xanthophyll
19 Which of the following is produced during the Krebs cycle? A NADH B FADH2 C ATP D All of the above
20 Which part of ATP is responsible for its high-energy bonds? A Adenine B Ribose C Phosphate groups D Deoxyribose
21 Where do the light-independent reactions (Calvin cycle) take place? A Thylakoid membrane B Stroma C Cytoplasm D Mitochondrial matrix
22 In which organelle does aerobic respiration mainly occur? A Chloroplast B Ribosome C Mitochondrion D Golgi apparatus
23 Where do the light-dependent reactions of photosynthesis occur? A Stroma B Thylakoid membrane C Mitochondrial matrix D Cytoplasm
25 What is the first stage of aerobic respiration? A Krebs cycle B Glycolysis C Electron transport chain D Fermentation