- Study guides, Class notes & Summaries

The chirality of an amino acid results from the fact that its α carbon: A) has no net charge. B) is a carboxylic acid. C) is bonded to four different chemical groups. D) is in the L absolute configuration in naturally occurring proteins. E) is symmetric. C) is bonded to four different chemical groups. Of the 20 standard amino acids, only ___________ is not optically active. The reason is that its side chain ___________. A) alanine; is a simple methyl group B) glycine; is a hydrog...

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42 pages

Written in 2022/2023

Grade A+

YOURVERIFIEDEXAMPLUG

1. Which of the following is not true of the reaction catalyzed by the pyruvate dehydrogenase complex? A) Biotin participates in the decarboxylation. B) Both NAD+ and a flavin nucleotide act as electron carriers. C) The reaction occurs in the mitochondrial matrix. D) The substrate is held by the lipoyl-lysine "swinging arm." E) Two different cofactors containing —SH groups participate. A 2. Which of the below is not required for the oxidative decarboxylation of pyruvate to for...

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30 pages

Written in 2022/2023

Grade A+

YOURVERIFIEDEXAMPLUG

1. Under which circumstances are amino acids not metabolized via oxidative degradation? A) Starvation B) Plants growing in nutrient-rich soils C) Normal protein turnover D) A diet rich in proteins E) Uncontrolled diabetes B 2. Which of these is not a protease that acts in the small intestine? A) Chymotrypsin B) Elastase C) Enteropeptidase D) Secretin E) Trypsin D 3. In the digestion of protein that occurs in the small intestine, which enzyme is critical in the activ...

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19 pages

Written in 2022/2023

Grade A+

YOURVERIFIEDEXAMPLUG

1. If the delta G'° of the reaction A --> B is -40 kJ/mol, under standard conditions the reaction: A) is at equilibrium. B) will never reach equilibrium. C) will not occur spontaneously. D) will proceed at a rapid rate. E) will proceed spontaneously from A to B. E For the reaction A --->B, delta G'° = -60 kJ/mol. The reaction is started with 10 mmol of A; no B is initially present. After 24 hours, analysis reveals the presence of 2 mmol of B, 8 mmol of A. Which is the mo...

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9 pages

Written in 2022/2023

Grade A+

YOURVERIFIEDEXAMPLUG

Which of the following pairs of bonds within a peptide backbone show free rotation around both bonds? A) C = O and N - C B) C = O and N - Cn C) Cα - C and N - Cα D) N - C and Cα - C E) N - Cα and N - C D) N - C and Cα - C Thr and/or Leu residues tend to disrupt an α helix when they occur next to each other in a protein because: A) Steric hindrance occurs between the bulky The side chains B) An amino acid like Thr is highly hydrophobic C) Covalent interactions may occur between th...

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9 pages

Written in 2022/2023

Grade A+

YOURVERIFIEDEXAMPLUG

Test Bank for Lehninger Principles of Biochemistry, Seventh Edition, (By David L. Nelson, 2018), Chapter 1-28 |All Chapters

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648 pages

Written in 2024/2025

Grade A+

testsolution

Lehninger Principles of Biochemistry 7th Edition by Nelson Test Bank. When a region of DNA must be repaired by removing and replacing some of the nucleotides, what ensures that the new nucleotides are in the correct sequence? A) DNA cannot be repaired and this explains why mutations occur. B) Specific enzymes bind the correct nucleotides. C) The new nucleotides base pair accurately with those on the complementary strand. D) The repair enzyme recognizes the removed nucleotide and brings in a...

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649 pages

Written in 2022/2023

Grade A+

STUDYROOM2026

Test Bank for Lehninger Principles of Biochemistry, 7th Edition by David L. Nelson Full Chapters Include;...Table of Contents 1. The Foundations of Biochemistry 2. Water 3. Amino Acids, Peptides, and Proteins 4. The Three-Dimensional Structure of Proteins 5. Protein Function 6. Enzymes 7. Carbohydrates and Glycobiology 8. Nucleotides and Nucleic Acids 9. DNA-Based Information Technologies 10. Lipids 11. Biological Membranes and Transport 12. Biosignaling 13. Bioenergetics and Biochemical Reactio...

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648 pages

Written in 2024/2025

Grade A+

Libgen

Test Bank for Lehninger Principles of Biochemistry 7th Edition by Nelson | Complete Guide All Chapters for 2023. Which statement about antibodies is INCORRECT? A) Antibodies bind to antigens via induced fit. B) Antibodies typically bind to antigens more strongly than enzymes bind to substrates. C) Antibodies can be both soluble and membrane-bound. D) Antibodies never release antigens once they are bound together. E) More than 100 million different antibodies can be produced in humans. 59...

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649 pages

Written in 2022/2023

Grade A+

ExcelAcademia2026

1. In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. 2. A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: A) DNA. B) photosynthetic capability. C) plasma membranes. D) ribosomes. E) the nucleus. 3. In eukaryotes, the nucleus is enclosed by a double membrane called the: A) cell membrane. B) nuclear envelope. C) nucleolus. D) nucleoplasm. E) nucleosome. 4. T...

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648 pages

Written in 2022/2023

Grade A+

esthermungai

Lehninger Principles of Biochemistry 7th Edition

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648 pages

Written in 2021/2022

Grade A+

NURSINGBOOSTER

Lehninger Principles of Biochemistry 7th Edition

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648 pages

Written in 2021/2022

Grade A+

NURSINGBOOSTER