Bioenergetics | Chapter 8 Biology | New Book | 2025

  Q1. The process of oxidation of food inside cells is called: A) Photosynthesis  B) Cellular Respiration  C) Fermentation D) Digestion Q2. The most common food molecule used by cells for energy is: A) Fat B) Protein  C) Glucose  D) Vitamin Q3. Aerobic respiration takes place in the presence of: A) Water  B) Oxygen  C) Carbon dioxide D) Alcohol Q4. In aerobic respiration, glucose is: A) Partially oxidized  B) Completely oxidized  C) Not oxidized D) Reduced Q5. The first phase of respiration breaks glucose into: A) Ethanol B) CO ₂   C) Pyruvic acid  D) Lactic acid Q6. How many pyruvic acid molecules are produced from one glucose molecule? A) 1  B) 2  C) 3 D) 4 Q7. Pyruvic acid has how many carbon atoms? A) 2  B) 3  C) 4 D) 5 Q8. Which type of respiration releases maximum energy? A) Aerobic respiration  B) Anaerobic respiration C) Fermentation D) Photosynthesis Q9. Cellular respiration without oxygen is called: A) Aerobic respiration  B) Anaerobic re...

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  Mechanism of photosynthesis consist of: A) Cytoplasm and nucleus    B) Mitochondria and cytoplasm     C) Light and dark reactions D) Ribosomes and nucleus Light reactions of photosynthesis take place in: A) Stroma of chloroplast            B) Cytoplasm    C) Nucleus         D) Thylakoid membranes The energy molecules produced in light reactions are: A) ATP only       B) NADPH only   C) Glucose + ATP           D) ATP and NADPH NAD is a: A) Protein         B) Coenzyme    C) Vitamin        D) Hormone The phosphorylated form of NAD is called: A) NADH            B) NAD  ...

ATP is also called: A) Cell’s energy coin B) Cell’s energy bank C) Cell’s energy currency D) Cell’s energy saver The scientist who proposed that ATP is the main energy-transfer molecule was: A) Robert Hooke B) Fritz Lipmann C) James Watson D) Gregor Mendel The year in which Fritz Lipmann proposed ATP’s role was: A) 1931 B) 1938 C) 1941 D) 1951 ATP molecule is composed of: A) Nitrogen base + glucose + phosphate B) Adenine + glucose + phosphate C) Adenine + ribose + three phosphates D) Adenine + galactose + two phosphates The nitrogen-containing base present in ATP is: A) Guanine B) Cytosine C) Thymine D) Adenine The sugar present in ATP is: A) Glucose B) Ribose C) Fructose D) Sucrose The bonds between the phosphate groups of ATP are called: A) Covalent weak bonds B) Ionic bonds C) Hydrogen bonds D) High-energy covalent bonds Breaking of one phosphate bond of ATP releases energy about: A) 5.3 kcal/mole B) 7.3 kc...

  1. Bioenergetics is the study of: A. Only photosynthesis B. Only respiration  C. How living organisms acquire, convert, store, and use energy  D. Chemical composition of living organisms 2. Organisms obtain energy primarily from: A. Their surroundings  B. ATP only C. Water and minerals D. Cell organelles 3. Plants capture sunlight through: A. Respiration  B. Photosynthesis  C. Fermentation D. Oxidation 4. Animals obtain energy mainly by: A. Absorbing sunlight  B. Consuming food  C. Oxidizing oxygen D. Using ATP directly 5. Chemical energy in cells is stored in: A. Glucose B. DNA  C. ATP  D. NADP 6. ATP stands for: A. Adenosine triphosphate  B. Adenine triphosphate C. Adenosine tetraphosphate D. Adenine tetraphosphate 7. Which of the following is NOT a process that uses ATP? A. Growth B. Movement C. Repair  D. Photosynthesis in plants 8. Oxidation-reduction reactions are also called: A. Endothermic reactions  B. Redox reactions  C. Hydrolysis reactions D. Co...