Chapter 9 Bio Exam Quiz

The redox reactions of the electron transport chain are directly coupled to the movement of protons across a membrane. The reduction and oxidation of electron carriers in the electron transport chain provide the energy to move protons across a membrane against the chemical gradient of protons.

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Which one of the following statements about the redox reactions of the electron transport chain is correct?
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Which of the following statements about the chemiosmotic synthesis of ATP is correct?
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Which of the following statements is not true of most cellular redox reactions?
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Which of the following best describes the main purpose of the combined processes of glycolysis and cellular respiration?

NADH and FADH2 ... intermembrane space. The energy released as electrons, which have been donated by NADH and FADH2, is passed along the electron transport chain and used to pump hydrogen ions into the intermembrane space.

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Which one of the following statements about the redox reactions of the electron transport chain is correct?
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For each glucose that enters glycolysis, _____ NADH + H+ are produced by the citric acid cycle.
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During electron transport, energy from _____ is used to pump hydrogen ions into the _____.
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The electrons stripped from glucose in cellular respiration end up in which compound?

Anion and cation.

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Which of the following best describes the main purpose of the combined processes of glycolysis and cellular respiration?
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Which one of the following statements about the redox reactions of the electron transport chain is correct?
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In the absence of oxygen, what is the net gain of ATP for each glucose molecule that enters glycolysis?
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Which terms describe two atoms when they form a bond in which electrons are completely transferred from one atom to the other?

transforming the energy in glucose and related molecules in a chemical form that cells can use for work. The energy made available during cellular respiration is coupled to a production of ATP, the basic energy currency that cells use for work.

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Which of the following statements is true of the bonds in a water molecule?
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Which of the following best describes the main purpose of the combined processes of glycolysis and cellular respiration?
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Which of the following statements about the chemiosmotic synthesis of ATP is correct?
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Which of the following statements is not true of most cellular redox reactions?

kinetic energy that is released as hydrogen ions diffuse down their concentration gradient. Concentration gradients are a form of potential energy.

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Which of the following statements is not true of most cellular redox reactions?
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The proximate (immediate) source of energy for oxidative phosphorylation is _____.
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The electrons stripped from glucose in cellular respiration end up in which compound?
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Which of the following describes the process of glycolysis?

FADHThis is a product of the citrus acid cycle.

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Which of the following describes the process of glycolysis?
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Which of these enters the citric acid cycle?
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Which of these is NOT a product of the citric acid cycle?
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Which of these is NOT a product of glycolysis?

substrate-level phosphorylation. A phosphate group is transferred from glyceraldehyde phosphate to ADP.

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In glycolysis, what starts the process of glucose oxidation?
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In glycolysis there is a net gain of _____ ATP.
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In the citric acid cycle, ATP molecules are produced by _____.
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In glycolysis, ATP molecules are produced by _____.

Two NADH molecules are produced by glycolysis.

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Which of these enters the citric acid cycle?
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How many NADH are produced by glycolysis?
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For each glucose that enters glycolysis, _____ NADH + H+ are produced by the citric acid cycle.
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Which of these is NOT a product of glycolysis?

acetyl CoA. Acetyl CoA enters the citric acid cycle.

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Which of these is NOT a product of the citric acid cycle?
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Which of these is NOT a product of glycolysis?
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Which of these enters the citric acid cycle?
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Which of the following describes the process of glycolysis?

Hydrogen, polar. Hydrogen loses electrons to oxygen, which is more electronegative and thus pulls the electrons closer to itself in the water molecule.

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In most cells, not all of the carbon compounds that participate in glycolysis and the citric acid cycle are converted to carbon dioxide by cellular respiration. What happens to the carbon in these compounds that does not end up as CO2?
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In the combined processes of glycolysis and cellular respiration, what is consumed and what is produced?
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Gaseous hydrogen burns in the presence of oxygen to form water:2H2 + O2 → 2H2 O + energyWhich molecule is oxidized and what kind of bond is formed?
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Which of the following statements is not true of most cellular redox reactions?

It takes two ATP to make four.

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In glycolysis there is a net gain of _____ ATP.
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In muscle cells, fermentation produces _____.
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Which of these is NOT a product of glycolysis?
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In glycolysis, what starts the process of glucose oxidation?

lactate and NAD+. These are the products of fermentation as it occurs in muscle cells.

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Which of these enters the citric acid cycle?
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In cellular respiration, most ATP molecules are produced by _____.
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In glycolysis, what starts the process of glucose oxidation?
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In muscle cells, fermentation produces _____.

oxidative phosphorylation. This process utilizes energy released by electron transport.

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For each glucose that enters glycolysis, _____ acetyl CoA enter the citric acid cycle.
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In muscle cells, fermentation produces _____.
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In glycolysis, what starts the process of glucose oxidation?
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In cellular respiration, most ATP molecules are produced by _____.

The last reaction in the citric acid cycle produces a product that is a substrate for the first reaction of the citric acid cycle.

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Which of these is NOT a product of the citric acid cycle?
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Which of the following describes the process of glycolysis?
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Which of these enters the citric acid cycle?
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Which statement about the citric acid cycle is correct?

Some ATP energy is used to start the process of glucose oxidation.

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In glycolysis, what starts the process of glucose oxidation?
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In glycolysis there is a net gain of _____ ATP.
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In cellular respiration, most ATP molecules are produced by _____.
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In muscle cells, fermentation produces _____.

It represents the first stage in the chemical oxidation of glucose by a cell. Catabolism of glucose begins with glycolysis.

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Which of the following describes the process of glycolysis?
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Which of the following statements is true of the bonds in a water molecule?
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Which of the following statements is not true of most cellular redox reactions?
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Which statement about the citric acid cycle is correct?

A hydrogen atom is transferred to the atom that loses an electron. A hydrogen atom (proton, or H+) is often transferred to the atom that gains an electron.

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Which of the following statements is true of the bonds in a water molecule?
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Which of the following statements about the chemiosmotic synthesis of ATP is correct?
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Which of the following describes the process of glycolysis?
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Which of the following statements is not true of most cellular redox reactions?

Glucose is consumed, and carbon dioxide is produced. The carbon in glucose is oxidized to carbon dioxide during cellular respiration

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In the combined processes of glycolysis and cellular respiration, what is consumed and what is produced?
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The electrons stripped from glucose in cellular respiration end up in which compound?
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The proximate (immediate) source of energy for oxidative phosphorylation is _____.
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In the absence of oxygen, what is the net gain of ATP for each glucose molecule that enters glycolysis?

acetyl CoA. Acetyl CoA is a reactant in the citric acid cycle.

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Which of these enters the citric acid cycle?
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Which of the following describes the process of glycolysis?
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Which of these is NOT a product of the citric acid cycle?
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Which of these is NOT a product of glycolysis?

The chemiosmotic synthesis of ATP requires that the electron transport in the inner mitochondrial membrane be coupled to proton transport across the same membrane. Chemiosmosis uses the energy of a proton gradient to make ATP; the proton gradient is formed by coupling the energy produced by electron transport with movement of protons across the membrane.

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Which of the following statements about the chemiosmotic synthesis of ATP is correct?
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Which of the following best describes the main purpose of the combined processes of glycolysis and cellular respiration?
0%
Which of the following statements is true of the bonds in a water molecule?
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Which of the following statements is not true of most cellular redox reactions?

Oxygen holds electrons more tightly than hydrogen does, and the net charge is zero. The oxygen and hydrogen atoms in water have partial charges, but the molecule has a net charge of zero.

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Which of the following describes the process of glycolysis?
0%
Which of the following statements about the chemiosmotic synthesis of ATP is correct?
0%
Which of the following statements is true of the bonds in a water molecule?
0%
Which of the following statements is not true of most cellular redox reactions?

The redox reactions of the electron transport chain are directly coupled to the movement of protons across a membrane. The reduction and oxidation of electron carriers in the electron transport chain provide the energy to move protons across a membrane against the chemical gradient of protons.

NADH and FADH2 ... intermembrane space. The energy released as electrons, which have been donated by NADH and FADH2, is passed along the electron transport chain and used to pump hydrogen ions into the intermembrane space.

Anion and cation.

transforming the energy in glucose and related molecules in a chemical form that cells can use for work. The energy made available during cellular respiration is coupled to a production of ATP, the basic energy currency that cells use for work.

kinetic energy that is released as hydrogen ions diffuse down their concentration gradient. Concentration gradients are a form of potential energy.

FADHThis is a product of the citrus acid cycle.

substrate-level phosphorylation. A phosphate group is transferred from glyceraldehyde phosphate to ADP.

Two NADH molecules are produced by glycolysis.

acetyl CoA. Acetyl CoA enters the citric acid cycle.

Hydrogen, polar. Hydrogen loses electrons to oxygen, which is more electronegative and thus pulls the electrons closer to itself in the water molecule.

It takes two ATP to make four.

lactate and NAD+. These are the products of fermentation as it occurs in muscle cells.

oxidative phosphorylation. This process utilizes energy released by electron transport.

The last reaction in the citric acid cycle produces a product that is a substrate for the first reaction of the citric acid cycle.

Some ATP energy is used to start the process of glucose oxidation.

It represents the first stage in the chemical oxidation of glucose by a cell. Catabolism of glucose begins with glycolysis.

A hydrogen atom is transferred to the atom that loses an electron. A hydrogen atom (proton, or H+) is often transferred to the atom that gains an electron.

Glucose is consumed, and carbon dioxide is produced. The carbon in glucose is oxidized to carbon dioxide during cellular respiration

acetyl CoA. Acetyl CoA is a reactant in the citric acid cycle.

Oxygen holds electrons more tightly than hydrogen does, and the net charge is zero. The oxygen and hydrogen atoms in water have partial charges, but the molecule has a net charge of zero.

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