Question

swing processes normally occurs whether or not oxygen is present 48. Which of the following processes normally occurs w a. citric acid cycle b. glycolysis c oxidative phosphorylation d. electron transport chain 49. Which process occurs in Box B? Electrons MÁ NADH lucose Pyruva Cytosol Mitochondrion che CO2 a. photophosphorylation b. glycolysis C. electron transport chain d. the citric acid cycle 50. Where are the proteins of the electron transport chain located? a. outer membrane of the mitochondria b. inner membrane of the mitochondria c.inner membrane space between the outer and inner membranes of the mitochondria d. mitochondrial matrix 51. During the electron transport chain, Hydrogen ions (H+) are pumped into which location in eukaryotic cells? a. cytoplasm, outside of the mitochondria b. cristae c.inner membrane space between the outer and inner membranes of the mitochondria d. mitochondrial matrix

Answer 1

Question 48.
Option (b) Glycolysis is correct answer.

• Glycolysis is a common pathway in both aerobic and anaerobic respiration. Glucose is converted to pyruvate in this process.
• If oxygen is available, them pyruvate goes through aerobic respiration that includes citric acid cycle and electron transport chain.
• If oxygen is unavailable then pyruvate goes through fermentation.

GLUCOSE GLYCOLYSIS PYRUVATE IN PRESENCE of OXYGEN IN ABSCENCE OF OXYGEN. FERWENTATLON ACETYL COA * LACTIC ACID FERMENTATION KREBS CYCLE ELECTRON TRANSPORT CHAIN LACTATE CO2+ ATP

Question 49.
Option (d) Citric acid cycle is correct answer.
• Pyruvate after entering in mitochondria converted into acetyl CoA and then enters into citric acid cycle.

GLUCOSE ACETYL Cop-> CREBS ALLE J ELETRON TRANSPORT PYRUVATE 2 ATP 2 ATP 32 ATP ne 6 60₂ + 12H2 + ENERGY C6H12O6 + 602 + 6H2 AEROBIC RESPIRATION

Electron transport chain :-
• This is a series of complexes which form hydrogen ions concentration gradient across inner mitochondrial membrane.
• These complexes situated at inner mitochondrial membrane and transport hydrogen ions from mitochondrial matrix to intermembrane space.
• In this process, protons are pumped from the mitochondrial matrix to the intermembrane space, and proton gradient is formed.
• This concentration gradient is used by ATP synthase enzyme for ATP formation which is located on inner mitochondrial membrane.

Question 50.
Option (b) Inner membrane of mitochondria is correct answer.

Question 51.
Option (c) is correct answer.
• Inner membrane space between the outer and inner membranes of mitochondria.