Biochemistry
6th Edition
ISBN: 9781337359573
Author: Reginald H. Garrett; Charles M. Grisham
Publisher: Cengage Learning US
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Textbook Question
Chapter 28, Problem 7P
The Roles of Helicases and Gyrases How do DNA gyrases and helicases differ in their respective functions and modes of action?
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12. When glutamic acid is heated to 180°C., it loses a molecule of water to form a
lactam. The bond that creates the lactam is an amide bond that forms between the
amino nitrogen and the carbon of the side chain -COOH group. What is the most
reasonable structure for this lactam? (NOTE: The structure of glutamic acid is shown
in Question 1.)
COOH
COOH
ا کچھ جو کچھ
C
D
COOH
B
COOH
E
COOH
10. Which one of the
following compounds is
the major organic product
of the series of reactions
shown here?
Ph
A
OH
Ph
B
CO₂Et
Br
-H
Ν ΚΑ
CO₂Et
1. NaOEt
1. NaOH, H₂O
2. H3O+
2. PhCH2CH2Br
3. heat
NH2
Ph
OH
NH2
0
OH
Ph
OH
NH2
Ph
D
NH2
E
OH
1. What is the isoelectric point of glutamic acid?
(Glutamic acid has pKa1 2.10, pKa2 4.07, pKaз 9.47)
A) pH 2.1
D) pH 6.8
B) pH 3.1
C) pH 4.1
E) pH 9.5
HO
NH2
Glutamic acid
(shown without charges)
OH
Chapter 28 Solutions
Biochemistry
Ch. 28 - Semiconservative or Conservative DNA Replication...Ch. 28 - The Enzymatic Activities of DNA Polymerase I (a)...Ch. 28 - Multiple Replication Forks in E. coli I Assuming...Ch. 28 - Multiple Replication Forks in E. coli II On the...Ch. 28 - Molecules of DNA Polymerase III per Cell vs....Ch. 28 - Number of Okazaki Fragments in E. coli and Human...Ch. 28 - The Roles of Helicases and Gyrases How do DNA...Ch. 28 - Human Genome Replication Rate Assume DNA...Ch. 28 - Heteroduplex DNA Formation in Recombination From...Ch. 28 - Homologous Recombination, Heteroduplex DNA, and...
Ch. 28 - Prob. 11PCh. 28 - Prob. 12PCh. 28 - Chemical Mutagenesis of DNA Bases Show the...Ch. 28 - Prob. 14PCh. 28 - Recombination in Immunoglobulin Genes If...Ch. 28 - Helicase Unwinding of the E. coli Chromosome...Ch. 28 - Prob. 17PCh. 28 - Functional Consequences of Y-Family DNA Polymerase...Ch. 28 - Figure 28.11 depicts the eukaryotic cell cycle....Ch. 28 - Figure 28.41 gives some examples of recombination...Ch. 28 - Prob. 21PCh. 28 - Prob. 22P
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- Br Mg, ether 1. HCHO (formaldehyde) 2. H+, H₂O PCC 1. NH3, HCN ? (pyridinium chlorochromate) 2. H2O, HCI 11. Which one of the following compounds is the major organic product of the series of reactions shown above? Ph. Ph. OH NH2₂ A Ph. Ή NH2 B OH Ph Η Ph OH NH2 NH2₂ NH₂ C D Earrow_forwardB A 6. Which ONE of the labeled bonds in the tripeptide on the right is a peptide bond: H₂N N 'N' OH C H A, B, C, D or E? HN E OHarrow_forwardQuestions 8-9 are 0.4 points each. The next two questions relate to the peptide whose structure is shown here. To answer these questions, you should look at a table of H2N/.. amino acid structures. You don't have to memorize the structures of the amino acids. IZ 8. What is the N-terminal amino acid of this peptide? A) proline B) aspartic acid C) threonine 9. What is the C-terminal amino acid of this peptide? A) proline B) aspartic acid C) threonine N OH D) valine E) leucine D) valine E) leucine NH "OH OHarrow_forward
- 7. What is the correct name of the following tripeptide? A) Ile-Met-Ser B) Leu-Cys-Thr C) Val-Cys-Ser D) Ser-Cys-Leu E) Leu-Cys-Ser H₂N!!!!! N H ΖΙ .SH SF H IN OH OHarrow_forwardPlease draw out the following metabolic pathways: (Metabolic Map) Mitochondrion: TCA Cycle & GNG, Electron Transport, ATP Synthase, Lipolysis, Shuttle Systems Cytoplasm: Glycolysis & GNG, PPP (Pentose Phosphate Pathway), Glycogen, Lipogenesis, Transporters and Amino Acids Control: Cori/ Glc-Ala cycles, Insulin/Glucagon Reg, Local/Long Distance Regulation, Pools Used Correctlyarrow_forwardPlease help provide me an insight of what to draw for the following metabolic pathways: (Metabolic Map) Mitochondrion: TCA Cycle & GNG, Electron Transport, ATP Synthase, Lipolysis, Shuttle Systems Cytoplasm: Glycolysis & GNG, PPP (Pentose Phosphate Pathway), Glycogen, Lipogenesis, Transporters and Amino Acids Control: Cori/ Glc-Ala cycles, Insulin/Glucagon Reg, Local/Long Distance Regulation, Pools Used Correctlyarrow_forward
- f. The genetic code is given below, along with a short strand of template DNA. Write the protein segment that would form from this DNA. 5'-A-T-G-G-C-T-A-G-G-T-A-A-C-C-T-G-C-A-T-T-A-G-3' Table 4.5 The genetic code First Position Second Position (5' end) U C A G Third Position (3' end) Phe Ser Tyr Cys U Phe Ser Tyr Cys Leu Ser Stop Stop Leu Ser Stop Trp UCAG Leu Pro His Arg His Arg C Leu Pro Gln Arg Pro Leu Gin Arg Pro Leu Ser Asn Thr lle Ser Asn Thr lle Arg A Thr Lys UCAG UCAC G lle Arg Thr Lys Met Gly Asp Ala Val Gly Asp Ala Val Gly G Glu Ala UCAC Val Gly Glu Ala Val Note: This table identifies the amino acid encoded by each triplet. For example, the codon 5'-AUG-3' on mRNA specifies methionine, whereas CAU specifies histidine. UAA, UAG, and UGA are termination signals. AUG is part of the initiation signal, in addition to coding for internal methionine residues. Table 4.5 Biochemistry, Seventh Edition 2012 W. H. Freeman and Company B eviation: does it play abbreviation:arrow_forwardAnswer all of the questions please draw structures for major productarrow_forwardfor glycolysis and the citric acid cycle below, show where ATP, NADH and FADH are used or formed. Show on the diagram the points where at least three other metabolic pathways intersect with these two.arrow_forward
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