Cellular Respiration: In Depth!
Fun stuff with fun people that's really lame. I hate cellular respiration but this quiz will be so in depth it'll make your head spin.
Questions and Answers
- 1.
Cells harvest energy in organic compounds to make ATP through a process called ______?
- A.
Anarobic breathing
- B.
Cellular respiration
- C.
Compound death
- D.
Glycolysis
Correct Answer
B. Cellular respirationExplanation
Cells harvest energy in organic compounds to make ATP through a process called cellular respiration. This process involves the breakdown of glucose molecules in the presence of oxygen to produce ATP, carbon dioxide, and water. It is the primary way in which cells obtain energy to perform their functions.Rate this question:
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- 2.
What is made in the second stage of cellular respiration?
- A.
2 pyruvates, starch, and cellulose
- B.
34 glucose, cellulose and H2O
- C.
34 ATP & 2 H2O
Correct Answer
C. 34 ATP & 2 H2OExplanation
In the second stage of cellular respiration, which is known as the Krebs cycle or citric acid cycle, 34 ATP molecules and 2 water molecules are produced. This process occurs in the mitochondria and involves the breakdown of pyruvates, which are produced in the first stage of cellular respiration. The Krebs cycle generates energy-rich molecules such as ATP through a series of chemical reactions. The production of ATP is essential for providing energy to cells for various biological processes.Rate this question:
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- 3.
The role of fermentation in cellular respiration is to recycle what?
- A.
NAD+
- B.
ATP
- C.
FADH
- D.
NADPH
Correct Answer
A. NAD+Explanation
Fermentation plays a crucial role in cellular respiration by recycling NAD+. During the process of glycolysis, NAD+ is converted into NADH. In order for glycolysis to continue, NAD+ must be regenerated. Fermentation helps in this regeneration process by accepting electrons from NADH and transferring them to an organic molecule, thereby converting NADH back into NAD+. This allows glycolysis to continue producing ATP, the energy currency of the cell. Therefore, the correct answer is NAD+.Rate this question:
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- 4.
When Oxygen is not presnt, the what does not function?
Correct Answer
electron transport chainExplanation
The electron transport chain is a series of protein complexes located in the inner mitochondrial membrane. It plays a crucial role in aerobic respiration, where oxygen is the final electron acceptor. Without the presence of oxygen, the electron transport chain cannot function properly, as there is no final electron acceptor to accept the electrons and complete the process. Therefore, the electron transport chain is unable to generate the necessary energy in the absence of oxygen.Rate this question:
- 5.
Is glycolysis anabrobic or arobic in stage of of cellular respiration?
Correct Answer
anarobicExplanation
Glycolysis is an anaerobic process in the stage of cellular respiration. During glycolysis, glucose is broken down into pyruvate molecules, producing a small amount of ATP and NADH. This process does not require oxygen and occurs in the cytoplasm of cells. In aerobic respiration, the pyruvate molecules produced in glycolysis are further processed in the mitochondria to generate more ATP through the Krebs cycle and oxidative phosphorylation. However, glycolysis itself is considered anaerobic as it does not directly involve oxygen.Rate this question:
- 6.
What are the products of the first sthage of cellular respiration?
Correct Answer
pyruvate, ATP, NADHExplanation
The products of the first stage of cellular respiration are pyruvate, ATP, and NADH. During this stage, known as glycolysis, glucose is broken down into two molecules of pyruvate. ATP is produced through substrate-level phosphorylation, where a phosphate group is transferred from a substrate molecule to ADP, forming ATP. NADH is also generated as a result of the oxidation of glucose. These products are important for the subsequent stages of cellular respiration, where further ATP production and energy extraction occur.Rate this question:
- 7.
Once it passes the first stage, it then goes into stage 2 and goes into Fermentation or Krebs Cycle or the Electron Transport Chain. fermentation is anarobic. what two types of fermentation are there?
- A.
Acidic
- B.
Lactic acid
- C.
Alcoholic
- D.
Basic
Correct Answer(s)
B. Lactic acid
C. AlcoholicExplanation
The correct answer is lactic acid and alcoholic fermentation. These are two types of fermentation that occur in different organisms. Lactic acid fermentation is commonly found in bacteria and muscle cells, where glucose is converted into lactic acid. Alcoholic fermentation, on the other hand, is commonly found in yeast and some bacteria, where glucose is converted into ethanol and carbon dioxide. Both types of fermentation are anaerobic processes that help organisms generate energy in the absence of oxygen.Rate this question:
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- 8.
What are the products of the krebs cycle?
Correct Answer(s)
CO2, NADH, ATP, FADHExplanation
The products of the Krebs cycle are CO2, NADH, ATP, and FADH. During the Krebs cycle, a series of chemical reactions occur in the mitochondria, resulting in the production of these molecules. CO2 is released as a waste product, while NADH and FADH are electron carriers that store energy for later use in the electron transport chain. ATP is the main energy currency of the cell and is produced through substrate-level phosphorylation during the Krebs cycle.Rate this question:
- 9.
Glucose is converted into pyruvate during...?
- A.
Glycolysis
- B.
The Krebs Cycle
- C.
Fermentation
- D.
C fixation
Correct Answer
A. GlycolysisExplanation
Glucose is converted into pyruvate during glycolysis. Glycolysis is the first step in cellular respiration and occurs in the cytoplasm of cells. During this process, glucose is broken down into two molecules of pyruvate, producing a small amount of ATP and NADH. This is an anaerobic process, meaning it does not require oxygen. The pyruvate molecules can then enter the Krebs Cycle or undergo fermentation, depending on the availability of oxygen.Rate this question:
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- 10.
Some of the glucose required for cellular respiration in human is obtained by eating which of th following?
- A.
Cellulose
- B.
Vitamins
- C.
Starch and sucrose
- D.
Monosaccharides
Correct Answer
C. Starch and sucroseExplanation
Starch and sucrose are both types of carbohydrates that can be broken down into glucose during digestion. Glucose is a key source of energy for cellular respiration in humans. While cellulose is also a carbohydrate, it cannot be digested by humans and does not contribute to glucose production. Vitamins and monosaccharides may be important for overall health, but they are not the main sources of glucose for cellular respiration. Therefore, the correct answer is starch and sucrose.Rate this question:
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- 11.
If oxygen is NOT available to accept electrons during aerobic respiration,
- A.
Aerobic processes stop
- B.
Fermentation proceeds
- C.
Only small amounts of ATP can be produced
Correct Answer(s)
A. Aerobic processes stop
B. Fermentation proceeds
C. Only small amounts of ATP can be producedExplanation
When oxygen is not available to accept electrons during aerobic respiration, aerobic processes stop because they require oxygen as the final electron acceptor in the electron transport chain. In the absence of oxygen, fermentation proceeds as an alternative pathway to produce energy. However, fermentation is less efficient than aerobic respiration, resulting in the production of only small amounts of ATP.Rate this question:
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- 12.
C6H12O6 + 6O2 -e-n-z-y-m-e-s---> 6CO2 + 6H2O +ATP is the chemical equation for what?
- A.
How cellular respiration occurs
- B.
The enzyme-assisted way the crebs cycle works
- C.
Enzyme-assisted process of cellular respiration
Correct Answer
C. Enzyme-assisted process of cellular respirationExplanation
The given chemical equation represents the process of cellular respiration, which is the enzymatic breakdown of glucose (C6H12O6) and oxygen (O2) to produce carbon dioxide (CO2), water (H2O), and ATP. This equation shows that enzymes are involved in facilitating the reaction, indicating that it is an enzyme-assisted process of cellular respiration.Rate this question:
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- 13.
When glucose is converted to pyruvate what are the products
- A.
FADH+
- B.
ATP
- C.
NADPH
- D.
NADH
Correct Answer(s)
B. ATP
D. NADHExplanation
When glucose is converted to pyruvate through the process of glycolysis, the products produced are ATP and NADH. ATP is a molecule that provides energy for cellular processes, while NADH is an electron carrier that plays a crucial role in cellular respiration. These products are essential for the generation of energy in the form of ATP and the transfer of electrons in various metabolic pathways.Rate this question:
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- 14.
When O2 is not present pyruvate is converted to what
- A.
Lactate
- B.
Ethanol
- C.
CO2
- D.
ATP
Correct Answer(s)
A. Lactate
B. Ethanol
C. CO2Explanation
When oxygen is not present, pyruvate undergoes fermentation. In animals, pyruvate is converted to lactate, while in yeast and some bacteria, it is converted to ethanol. Both lactate and ethanol are produced as byproducts of anaerobic respiration. Additionally, some CO2 is also released during fermentation. ATP, on the other hand, is not directly produced from pyruvate but is generated through the subsequent processes of cellular respiration.Rate this question:
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- 15.
What is the primary fuel for cellular respiration
- A.
Starch
- B.
Monosaccharides
- C.
Food
- D.
Glucose
Correct Answer
D. GlucoseExplanation
Glucose is the primary fuel for cellular respiration because it is a simple sugar that can be easily broken down by cells to release energy. During cellular respiration, glucose is oxidized in the presence of oxygen to produce ATP, which is the main energy currency of cells. Starch and food are sources of glucose, but they need to be broken down into monosaccharides (such as glucose) before they can be used for cellular respiration. Therefore, while all the options are related to glucose, glucose itself is the direct and immediate fuel for cellular respiration.Rate this question:
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- 16.
Glycolysis is an enzyme-assisted anaerobic process that breaks down one ____ of glucose to two ______ pyruvate ions
Correct Answer
6 carbon molecule
3 carbonExplanation
Glycolysis is an enzyme-assisted anaerobic process that breaks down one 6 carbon molecule of glucose to two 3 carbon pyruvate ions. This process occurs in the cytoplasm of cells and is the first step in cellular respiration. During glycolysis, glucose is converted into two molecules of pyruvate through a series of enzymatic reactions. Each pyruvate molecule contains 3 carbon atoms, while glucose contains 6 carbon atoms. Therefore, the correct answer is that glycolysis breaks down one 6 carbon molecule of glucose to two 3 carbon pyruvate ions.Rate this question:
- 17.
As glucose is broken down, some of its hydrogen atoms are transferred to an electron acceptor called what
- A.
NAD+
- B.
FADH+
- C.
NADH+
- D.
ATP
Correct Answer
A. NAD+Explanation
During the breakdown of glucose, hydrogen atoms are transferred to an electron acceptor called NAD+. NAD+ acts as a coenzyme and plays a crucial role in cellular respiration. It accepts two hydrogen atoms, along with two electrons, to form NADH+. This conversion of NAD+ to NADH+ is an important step in the process of generating energy from glucose. NADH+ then participates in the electron transport chain, where it donates its electrons to produce ATP, the energy currency of the cell.Rate this question:
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- 18.
What is the waste of stage one of cellular respiration
- A.
CO2
- B.
Phosphoglycerokinase
- C.
H2O
- D.
Pyruvate
Correct Answer
C. H2OExplanation
In stage one of cellular respiration, glucose is broken down through a process called glycolysis. During glycolysis, glucose is converted into two molecules of pyruvate. This process also produces a small amount of ATP and NADH. The production of H2O is not directly associated with stage one of cellular respiration. Instead, the production of water occurs in the later stages of cellular respiration, specifically during the electron transport chain. Therefore, H2O is not a waste product of stage one of cellular respiration.Rate this question:
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- 19.
What is the waste of stage two of cellular respiration
- A.
CO2
- B.
H2O
- C.
NADH
- D.
FADH
Correct Answer
A. CO2Explanation
During stage two of cellular respiration, which is known as the citric acid cycle or Krebs cycle, one molecule of glucose is broken down into two molecules of pyruvate. These pyruvate molecules then enter the mitochondria, where they undergo further breakdown through a series of chemical reactions. One of the byproducts of these reactions is the release of carbon dioxide (CO2). Therefore, CO2 is the waste product of stage two of cellular respiration.Rate this question:
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