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Production of ATP MDCAT MCQs with Answers

Production of ATP MCQs

Welcome to the Production of ATP MDCAT MCQs with Answers. In this post, we have shared Production of ATP Multiple Choice Questions and Answers for PMC MDCAT 2024. Each question in MDCAT Biology offers a chance to enhance your knowledge regarding Production of ATP MCQs in this MDCAT Online Test.

Which process generates the most ATP in cellular respiration?
a) Glycolysis
b) Citric acid cycle
c) Electron transport chain
d) Fermentation

Answer
c) Electron transport chain

What is the net gain of ATP molecules from glycolysis?
a) 2
b) 4
c) 6
d) 8

Answer
a) 2

During which phase of cellular respiration is ATP synthesized through substrate-level phosphorylation?
a) Glycolysis
b) Citric acid cycle
c) Electron transport chain
d) Both a and b

Answer
d) Both a and b

What is the primary role of ATP synthase in cellular respiration?
a) To break down glucose
b) To transport electrons
c) To produce ATP
d) To split water molecules

Answer
c) To produce ATP

Which molecule provides the energy needed for ATP synthesis in the electron transport chain?
a) NADH
b) FADH2
c) ATP
d) Oxygen

Answer
d) Oxygen

How many ATP molecules are generated from one molecule of glucose during aerobic respiration?
a) 2
b) 4
c) 32
d) 38

Answer
d) 38

What is the role of NADH and FADH2 in ATP production?
a) To act as electron carriers
b) To split glucose
c) To form ATP directly
d) To capture light energy

Answer
a) To act as electron carriers

In which part of the cell does oxidative phosphorylation occur?
a) Cytoplasm
b) Mitochondrial matrix
c) Mitochondrial inner membrane
d) Nucleus

Answer
c) Mitochondrial inner membrane

Which of the following processes does not produce ATP?
a) Glycolysis
b) Citric acid cycle
c) Fermentation
d) Light-dependent reactions of photosynthesis

Answer
d) Light-dependent reactions of photosynthesis

How many ATP molecules are produced from each NADH molecule in the electron transport chain?
a) 1
b) 2
c) 3
d) 4

Answer
c) 3

What is the function of ATP in cells?
a) To store genetic information
b) To transport oxygen
c) To provide energy for cellular processes
d) To synthesize proteins

Answer
c) To provide energy for cellular processes

What happens to the ATP produced during glycolysis?
a) It is used immediately for cellular processes
b) It is stored in the nucleus
c) It is converted into NADH
d) It is exported to the cytoplasm

Answer
a) It is used immediately for cellular processes

In the citric acid cycle, ATP is produced by which type of phosphorylation?
a) Oxidative phosphorylation
b) Substrate-level phosphorylation
c) Photophosphorylation
d) None of the above

Answer
b) Substrate-level phosphorylation

Which enzyme complex in the electron transport chain directly produces ATP?
a) Complex I
b) Complex II
c) Complex III
d) ATP synthase

Answer
d) ATP synthase

What is the primary role of oxygen in the electron transport chain?
a) To act as an electron donor
b) To act as an electron acceptor
c) To produce ATP directly
d) To generate NADH

Answer
b) To act as an electron acceptor

Which process generates ATP without the use of oxygen?
a) Glycolysis
b) Citric acid cycle
c) Electron transport chain
d) Fermentation

Answer
d) Fermentation

During which stage of cellular respiration are most ATP molecules produced?
a) Glycolysis
b) Citric acid cycle
c) Electron transport chain
d) Fermentation

Answer
c) Electron transport chain

Which molecule is the final product of the electron transport chain?
a) ATP
b) Carbon dioxide
c) Water
d) Glucose

Answer
c) Water

How many ATP molecules are produced from each FADH2 molecule in the electron transport chain?
a) 1
b) 2
c) 3
d) 4

Answer
b) 2

What is the primary source of energy for ATP synthesis in mitochondria?
a) Proton gradient
b) Glucose
c) Oxygen
d) Carbon dioxide

Answer
a) Proton gradient

In anaerobic respiration, how many ATP molecules are typically produced per glucose molecule?
a) 2
b) 4
c) 32
d) 38

Answer
a) 2

Which molecule is not involved in ATP production?
a) ADP
b) Phosphate
c) Glucose
d) ATP synthase

Answer
c) Glucose

What is the net gain of ATP molecules from the citric acid cycle per glucose molecule?
a) 2
b) 4
c) 6
d) 8

Answer
a) 2

Which process is responsible for the production of ATP during fermentation?
a) Oxidative phosphorylation
b) Substrate-level phosphorylation
c) Photophosphorylation
d) None of the above

Answer
b) Substrate-level phosphorylation

In which part of the cell does glycolysis occur?
a) Mitochondrial matrix
b) Cytoplasm
c) Nucleus
d) Endoplasmic reticulum

Answer
b) Cytoplasm

What is the main purpose of ATP in muscle contraction?
a) To provide structural support
b) To store energy
c) To release energy for contraction
d) To synthesize proteins

Answer
c) To release energy for contraction

Which type of phosphorylation occurs in the light-dependent reactions of photosynthesis?
a) Oxidative phosphorylation
b) Substrate-level phosphorylation
c) Photophosphorylation
d) None of the above

Answer
c) Photophosphorylation

What is the main purpose of the electron transport chain in ATP production?
a) To produce glucose
b) To create a proton gradient
c) To split water molecules
d) To fix carbon dioxide

Answer
b) To create a proton gradient

Which process generates ATP in both mitochondria and chloroplasts?
a) Glycolysis
b) Citric acid cycle
c) Chemiosmosis
d) Fermentation

Answer
c) Chemiosmosis

What is the effect of cyanide on ATP production?
a) It stimulates ATP production
b) It has no effect
c) It inhibits ATP production
d) It increases ATP production

Answer
c) It inhibits ATP production

What molecule donates electrons to the electron transport chain in cellular respiration?
a) ATP
b) NADH
c) FADH2
d) Both b and c

Answer
d) Both b and c

How many ATP molecules are generated during the complete oxidation of one molecule of glucose?
a) 18
b) 24
c) 32
d) 36

Answer
d) 36

Which enzyme complex is not part of the electron transport chain?
a) Complex I
b) Complex II
c) ATP synthase
d) Pyruvate dehydrogenase

Answer
d) Pyruvate dehydrogenase

What happens to the ATP produced during glycolysis and the citric acid cycle?
a) It is used for cellular functions
b) It is stored in the mitochondria
c) It is converted to NADH
d) It is exported to the cytoplasm

Answer
a) It is used for cellular functions

Which component of the mitochondrion is crucial for creating the proton gradient necessary for ATP production?
a) Outer membrane
b) Inner membrane
c) Matrix
d) Intermembrane space

Answer
b) Inner membrane

What is the role of proton pumps in the electron transport chain?
a) To transport ATP
b) To pump protons into the matrix
c) To create a proton gradient
d) To transport electrons

Answer
c) To create a proton gradient

How does the ATP yield from FADH2 compare to that from NADH?
a) FADH2 yields more ATP
b) NADH yields more ATP
c) Both yield the same amount of ATP
d) FADH2 yields no ATP

Answer
b) NADH yields more ATP

What is the primary role of ATP in energy metabolism?
a) To store glucose
b) To transfer energy within cells
c) To carry oxygen
d) To synthesize nucleic acids

Answer
b) To transfer energy within cells

How does the efficiency of ATP production vary between aerobic and anaerobic respiration?
a) Aerobic respiration is less efficient
b) Anaerobic respiration is more efficient
c) Aerobic respiration is more efficient
d) Both are equally efficient

Answer
c) Aerobic respiration is more efficient

What is the byproduct of ATP production in the electron transport chain?
a) Glucose
b) Oxygen
c) Water
d) Carbon dioxide

Answer
c) Water

How does the production of ATP in cellular respiration differ from that in photosynthesis?
a) Photosynthesis produces ATP only in light-dependent reactions
b) Cellular respiration produces ATP only in glycolysis
c) Photosynthesis and cellular respiration produce ATP in the same manner
d) Cellular respiration produces ATP in the mitochondria, while photosynthesis produces it in chloroplasts

Answer
d) Cellular respiration produces ATP in the mitochondria, while photosynthesis produces it in chloroplasts

Which part of the mitochondrion is responsible for the citric acid cycle?
a) Outer membrane
b) Inner membrane
c) Matrix
d) Intermembrane space

Answer
c) Matrix

Which of the following is true about ATP production in prokaryotes?
a) It occurs in mitochondria
b) It occurs in the cytoplasm
c) It occurs in the plasma membrane
d) It occurs in the nucleus

Answer
c) It occurs in the plasma membrane

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