Biology 1401 Chapter 7 How Cells Harvest Energy

26 Questions | By Vlgarza08 | Updated: Mar 22, 2022 | Attempts: 1314

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Biology 1401 Chapter 7 How Cells Harvest Energy - Quiz

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1.

A molecule that stores energy by linking charged phosphate groups each other is called
- A.
  
  ATP.
- B.
  
  NADH.
- C.
  
  FADH.
- D.
  
  Cyclic AMP.
- E.
  
  Pyruvate.
2.

An electron carrier that is used in harvesting energy from glucose molecules in a series of gradual steps in the cytoplasm is
- A.
  
  Pyruvate.
- B.
  
  Cyclic AMP.
- C.
  
  ATP.
- D.
  
  NAD+.
- E.
  
  NADH.
3.

In eukaryotes, the glycolytic reactions take place in the
- A.
  
  Mitochondria of the cell.
- B.
  
  Cytoplasm of the cell.
- C.
  
  Ribosomes of the cell.
- D.
  
  Endoplasmic reticulum of each cell.
- E.
  
  Golgi bodies of the cell.
4.

The first stage of cellular respiration is
- A.
  
  Decarboxylation.
- B.
  
  Deamination.
- C.
  
  Fermentation.
- D.
  
  Chemiosmosis.
- E.
  
  Glycolysis.
5.

In the absence of oxygen, hydrogen atoms generated by glycolysis are donated to organic molecules in a process called
- A.
  
  Fermentation.
- B.
  
  Decarboxylation.
- C.
  
  Chemiosmosis.
- D.
  
  Electron transport chain reactions.
- E.
  
  Acetyl-CoA formation.
6.

Which of the following statements abotu fermentation is false?
- A.
  
  Fermentation takes place only in the absence of oxygen.
- B.
  
  The recipient of hydrogen atoms is an organic molecule.
- C.
  
  Water is not one of the by-products.
- D.
  
  The Krebs cycle and electron transfer system do not occur.
- E.
  
  Cells can only undergo one type of fermentation.
7.

Chemiosmotic generation of ATP is driven by
- A.
  
  Pi transfer through the plasma membrane.
- B.
  
  The NA+/K+ pump.
- C.
  
  A difference in H+ concentration on the two sides of the mitochondrial membrane.
- D.
  
  Osmosis of macromolecules.
- E.
  
  Large quantities of ADP.
8.

The reaction, C(6)H(12)O(6) + 6O(2) = 6 CO(2) + 6 H(2)O, when it occurs in living cells is known as
- A.
  
  Aerobic fermentation.
- B.
  
  Anaerobic fermentation.
- C.
  
  Aerobic respiration.
- D.
  
  Glycolysis.
- E.
  
  Oxidative phosphorylation.
9.

In oxidative respiration, energy is harvested from glucose molecules in a sequence of four major pathways. Which of the following is not one of these four pathways?
- A.
  
  Krebs cycle
- B.
  
  Glycolysis
- C.
  
  Electron transfer through the transport chain
- D.
  
  Beta oxidation
- E.
  
  Pyruvate oxidation
10.

A process common to all living organisms, aerobic and anaerobic, is
- A.
  
  Glycolysis.
- B.
  
  Fermentation.
- C.
  
  The Krebs cycle.
- D.
  
  Electron transport chain reactions.
- E.
  
  Pyruvate oxidation.
11.

All of the following are the end products of glycolysis except
- A.
  
  Pyruvate.
- B.
  
  ATP.
- C.
  
  NADH.
- D.
  
  NAD+.
- E.
  
  Energy.
12.

The end-product of glycolysis is
- A.
  
  ATP.
- B.
  
  NAD+.
- C.
  
  Alcohol.
- D.
  
  ADP.
- E.
  
  Pyruvate.
13.

The enzymes catalyzing the reactions of glycolysis are found in the
- A.
  
  Mitochondria.
- B.
  
  Cytoplasm.
- C.
  
  Chloroplasts.
- D.
  
  Nucleus.
- E.
  
  Golgi apparatus.
14.

The decarboxylation step of oxidation of pyruvate takes place in the
- A.
  
  Cytoplasm.
- B.
  
  Golgi body.
- C.
  
  Ribosome.
- D.
  
  Mitochondrion.
- E.
  
  Nucleus.
15.

The decarboxylation of pyruvate produces all of the following except
- A.
  
  NADH.
- B.
  
  Acetyl-CoA.
- C.
  
  CO(2).
- D.
  
  ATP.
16.

In the cyclic reaction sequence called the Krebs cycle, the following chemical events take place except
- A.
  
  The acetyl group is joined with a four carbon molecule, oxaloacetate.
- B.
  
  The resulting six carbon molecule is oxidized.
- C.
  
  Electrons generated are used to produce NADH.
- D.
  
  Two carbons per cycle are made into CO(2) molecules.
- E.
  
  Pyruvate molecules are restored to the cycle.
17.

A single glucose molecule can drive the Krebs cycle
- A.
  
  One turn.
- B.
  
  Two turns.
- C.
  
  Three turns.
- D.
  
  Four turns.
- E.
  
  Six turns.
18.

The coenzyme electron carriers produced in the Krebs cycle are
- A.
  
  ATP and ADP.
- B.
  
  Pyruvate and acetyl-CoA.
- C.
  
  FADH(2) and NADH.
- D.
  
  NAD and NADH.
- E.
  
  NADH and ATP.
19.

The oxygen utilized in cellular respiration finally shows up as
- A.
  
  CO(2).
- B.
  
  ATP.
- C.
  
  New O(2).
- D.
  
  H(2)O.
- E.
  
  Part of a sugar.
20.

The enzymes of the Krebs cycle are located in the
- A.
  
  Cytoplasm.
- B.
  
  Inter-membrane space of mitochondria.
- C.
  
  Vesicles of the ER.
- D.
  
  Outer membrane of the mitochondria.
- E.
  
  Matrix of the mitochondria.
21.

Since membranes are relatively impermeable to ions, most of the protons re-enter the matrix of mitochondria by passing through special channels in the inner mitochondrial membrane. Because of the inward flow of protons these channels allow the synthesis of
- A.
  
  ADP from ATP and Pi.
- B.
  
  ATP from ADP and Pi.
- C.
  
  Glucose from pyruvate.
- D.
  
  Acetyl-CoA from pyruvate.
- E.
  
  Citrate from oxaloacetate and acetyl-CoA.
22.

Regardless of the electron or hydrogen acceptor used, one of the products of fermentation is always
- A.
  
  ADP.
- B.
  
  ATP.
- C.
  
  NAD+.
- D.
  
  Pyruvate.
- E.
  
  Alcohol.
23.

Yeast cells under anaerobic conditions
- A.
  
  Die.
- B.
  
  Produce ethyl alcohol (ethanol).
- C.
  
  Produce oxygen.
- D.
  
  Switch to oxidative respiration.
- E.
  
  Push the glycolytic pathway backward.
24.

In muscle cells, fermentation produces not alcohol but
- A.
  
  ATP.
- B.
  
  NADH.
- C.
  
  Pyruvate.
- D.
  
  Kinetic energy.
- E.
  
  Lactic acid.
25.

During respiration the final acceptor of the hydrogen atoms is
- A.
  
  Oxygen.
- B.
  
  Carbon dioxide.
- C.
  
  Water.
- D.
  
  Glucose.
- E.
  
  Pyruvate.