Lehninger Principles of Biochemistry 7th Edition

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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...

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...

Lehninger Principles of Biochemistry 7th Edition

Lehninger Principles of Biochemistry 7th Edition