Download Test Bank of Tymoczko's Biochemistry a Short Course 3Rd EDITION (Six Month Access) John L. Tymoc PDF

TitleTest Bank of Tymoczko's Biochemistry a Short Course 3Rd EDITION (Six Month Access) John L. Tymoc
File Size1.5 MB
Total Pages315
Table of Contents
                            Chapter 1 Biochemistry and the Unity of Life
Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
	Chapter 2 Water, Weak Bonds, and the Generation of Order Out of Chaos
		Fill-in-the-Blank Questions
	Chapter 3 Amino Acids
Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
	Chapter 4 Protein Three-Dimensional Structure
		Fill-in-the-Blank Questions
	Chapter 5 Techniques in Protein Biochemistry
Matching Questions
	Fill-in-the Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 6 Basic Concepts of Enzyme Action
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 7 Kinetics and Regulation
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
		Chapter 8 Mechanisms and Inhibitors
			Matching Questions
			Fill-in-the-Blank Questions
			Short-Answer Questions
	Chapter 9 Hemoglobin: An Allosteric Protein
		Matching Questions
		Fill-in-the Blank Questions
		Multiple-Choice Questions
	Chapter 10 Carbohydrates
		Matching Questions
		Fill-in-the Blank Questions
		Multiple-Choice Questions
		Short-Answer Questions
	Chapter 11 Lipids
		Matching Questions
		Fill-in-the-Blank Questions
		Multiple-Choice Questions
	Chapter 11 Lipids
		Matching Questions
		Fill-in-the-Blank Questions
		Multiple-Choice Questions
	Chapter 12 Membrane Structure and Function
		Matching Questions
		Fill-in-the-Blank Questions
		Multiple-Choice Questions
	Chapter 12 Membrane Structure and Function
		Matching Questions
		Fill-in-the-Blank Questions
		Multiple-Choice Questions
Chapter 13 Signal-Transduction Pathways
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 13 Signal-Transduction Pathways
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 14 Digestion: Turning a Meal into Cellular Biochemicals
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
Chapter 14 Digestion: Turning a Meal into Cellular Biochemicals
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
Chapter 15 Metabolism: Basic Concepts and Design
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 16 Glycolysis
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
Chapter 17 Gluconeogenesis
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
		Glycerol is first oxidized in a reaction requiring NAD+ and then phosphorylated in reversible reaction of glycolysis.
	Chapter 18 Preparation for the Cycle
		Matching Questions
		Fill-in-the-Blank Questions
		Multiple-Choice Questions
	Chapter 19 Harvesting Electrons from the Cycle
		Matching Questions
		Fill-in-the-Blank Questions
		Multiple-Choice Questions
Chapter 20 The Electron-Transport Chain
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
		What is the rationale for saying that “electrons flow down the electron-transport chain”?
	Short-Answer Questions
Chapter 21 The Proton-Motive Force
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
	Chapter 22 The Light Reactions
Matching Questions
	Fill-in-the-Blank Questions
	Short-Answer Questions
Chapter 23 The Calvin Cycle
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
	Chapter 24 Glycogen Degradation
Matching Questions
Fill-in-the-Blank Questions
Multiple-Choice Questions
Short-Answer Questions
	Chapter 25 Glycogen Synthesis
Matching Questions
Fill-in-the-Blank Questions
Multiple-Choice Questions
Short-Answer Questions
Chapter 26 The Pentose Phosphate Pathway
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 27 Fatty Acid Degradation
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 28 Fatty Acid Synthesis
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 29 Lipid Synthesis
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 31 Amino Acid Synthesis
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 32 Nucleotide Metabolism
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 33 The Structure of Informational Macromolecules: DNA and RNA
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
		Chapter 34 DNA Replication
	Matching Questions
		Fill-in-the-Blank Questions
		Multiple-Choice Questions
		Short-Answer Questions
		Chapter 35 DNA Repair and Recombination
	Matching Questions
		Fill-in-the-Blank Questions
		Multiple-Choice Questions
		Short-Answer Questions
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
Chapter 37 Gene Expression in Eukaryotes
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
Chapter 38 RNA Processing in Eukaryotes
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
		Chapter 39 The Genetic Code
	Matching Questions
		Fill-in-the-Blank Questions
		Multiple-Choice Questions
		Short-Answer Questions
		Chapter 40 The Mechanism of Protein Synthesis
	Matching Questions
		Fill-in-the-Blank Questions
		Multiple-Choice Questions
		Short-Answer Questions
Chapter 41 Recombinant DNA Techniques
	Matching Questions
	Fill-in-the-Blank Questions
	Multiple-Choice Questions
	Short-Answer Questions
                        
Document Text Contents
Page 1

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Chapter 1 Biochemistry and the Unity of Life

Matching Questions
Use the following to answer questions 1–10:

Choose the correct answer from the list below. Not all of the answers will be used.
a) uracil
b) cytoplasm
c) protein
d) thymine
e) carbohydrate
f) sugar–phosphate units
g) cell wall
h) transcription
i) glycogen
j) lipid
k) central dogma
l) phagocytosis
m) endoplasmic reticulum
n) translation
o) prokaryotes
p) eukaryotes
q) lysosome

1. DNA is made from the building blocks adenine, guanine, cytosine, and
____________.

2. ____________: Unbranched polymer that, when folded into its three-
dimensional shape, performs much of the work of the cell.

Page 2

Chapter 1 Biochemistry and the Unity of Life

3. ____________: Scheme that describes the flow of information from
one strand of DNA to a new strand of DNA.

4. ____________: Process where large amounts of material are taken into
the cell.

5. The transfer of information from DNA to RNA is called
____________.

6. ____________ are cells that are composed of multiple specialized
compartments.

7. ____________: Class of biological macromolecules with many
functions, such as forming barriers between cell organelles, serving as a
metabolic fuel, and cell-to-cell signaling.

8. ____________: Highly organized region of the cell where glycolytic
metabolism occurs.

9. ____________: Responsible for protein processing and xenobiotic
metabolism.

10.. ____________: Filled with proteases and other digestive enzymes.

2

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Chapter 1 Biochemistry and the Unity of Life

301 The ΔG°ˊ for the sum of the reactions in the pyruvate dehydrogenase complex is –33.4 kJ/mol.
What is the primary contribution to this large and negative free energy change?

A) In E3, two electrons are transferred from FADH2 to NAD+, a thermodynamically favored transfer.
B) The product of the reaction, acetyl CoA, is shuttled into the mitochondria, keeping the cytosolic

concentration low.
C) Free energy from the decarboxylation step drives the formation of NADH.
D) A and B.
E) A, B, and C.

302 Why is it important that the eight catalytic trimers of the transacetylase enzyme, E2, are
assembled to form the hollow cube of the enzyme complex?

A) Binding of the final coenzyme, NAD+, occurs on the inner surface of the hollow core structure.
B) This hollow core separates the intermediates of the three enzyme reactions.
C) The hollow core is connected to the 20-Å-long hydrophobic channel in the E1 enzyme.
D) Substrates move from active site to active site across the hollow core.
E) The E2 enzyme contains the long flexible lipoamide arm needed for the structural integration of

the complex.

303 Which of the following illustrates the role of Ca2+ in PDH complex regulation?
A) Ca2+ activates phosphatase activity, deactivating PDHase activity.
B) Ca2+ is elevated intracellularly with the increase of muscle contractions, activating PDHase

activity.

C) Insulin causes a decrease in Ca2+, activating pyruvate kinase activity.
D) In liver, Ca2+ stimulates pyruvate kinase, increasing conversion of pyruvate to acetyl CoA.
E) None of the above.

304 Why does acetyl CoA, a product of fatty acid catabolism, influence the pyruvate dehydrogenase
complex (PDH), a control point in carbohydrate catabolism?

A) When fatty acid breakdown is inhibited, ADP is low, causing a decrease in activity.
B) When fatty acid breakdown is inhibited, PDH is inhibited by acetyl CoA due to phosphatase

activity.
C) When fatty acid breakdown is high, ADP is low and PDH is inhibited by phosphatase activity.
D) When fatty acid breakdown is high, PDH is inhibited by acetyl CoA due to pyruvate kinase

activity.
E) When fatty acid breakdown is high, NADH levels drop, causing an increase in E2 activity.

Short-Answer Questions

305 Review the fates of pyruvate and the cellular conditions that dictate these fates.

157

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Chapter 1 Biochemistry and the Unity of Life

306 What reaction serves to link glycolysis and the citric acid cycle?

307 How does the term “mad as a hatter” realistically reflect the condition?

308 What are the three enzyme subunits in the PDH complex and the reactions they catalyze?

309 What coenzyme is required for the decarboxylation reaction in PDH and what is the vitamin
precursor?

310 Identify the coenzyme, and its vitamin precursor, that is responsible for the transfer of a two-
carbon group to form a high-energy thioester bond in coenzyme A.

311 Identify the coenzyme, and its vitamin precursor, that accepts electrons to reoxidize lipoamide in
PDH.

312 How are the three active sites of PDH linked?

313 What are the two advantages that are derived from the coordinated actions of the three enzymes
in the PDH complex?

314 If NADH levels are high, what is the fate of acetyl CoA?

315 Why do beriberi and mercury poisoning present with similar symptoms even though they have
different molecular causes?

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Chapter 1 Biochemistry and the Unity of Life

1221 Briefly outline how a cDNA library is made.

1222 How is gene disruption used to determine the function of a gene?

1223 What is a transcriptome?

1224 Why are monoclonal antibodies more useful than polyclonal antibodies?

1225 How does quantitative PCR differ from nonquantitative PCR?

1226 Describe the technique called a DNA microarray.



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