Bch 3025 exam 1 Study guides, Class notes & Summaries

In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. Correct Answer-nucleoid 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. Correct Answer-the nucleus. In eukaryotes, the nucleus is enclosed by a double membrane called the: A) cell membrane. B) nuclear envelope. C) nu...

A good transition-state analog: A) binds covalently to the enzyme. B) binds to the enzyme more tightly than the substrate. C) binds very weakly to the enzyme. D) is too unstable to isolate. E) must be almost identical to the substrate. - Answer-binds to the enzyme more tightly than the substrate. A major advance in the application of mass spectrometry to macromolecules came with the development of techniques to overcome which of the following problems? A) Macromolecules were insoluble i...

A good transition-state analog: - Answer-binds to the enzyme more tightly than the substrate A major advance in the application of mass spectrometry to macromolecules came with the development of techniques to overcome which of the following problems? - Answer-Mass spectrometric analysis involved molecules in the gas phase A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: - Answer-the nucleus A metabolic pathway proceeds according to the schem...

In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. Ans: nucleoid 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. Ans: the nucleus. In eukaryotes, the nucleus is enclosed by a double membrane called the: A) cell membrane. B) nuclear envelope. C) nucleolus. D) nucleopl...

In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. - nucleoid 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. - the nucleus. In eukaryotes, the nucleus is enclosed by a double membrane called the: A) cell membrane. B) nuclear envelope. C) nucleolus. D) nucleoplasm....

A nonapeptide was determined to have the following amino acid com position: (Lys)2, (Gly) 2, (Phe) 2, His, Leu, Met. The native peptide was incubated with 1-fluoro-2,4- dinitrobenzene (FDNB) and then hydrolyzed; 2,4-dinitrophenylhistidine was identified by HPLC. When the native peptide was exposed to cyanogen bromide(CNBr), an octapeptide and free glycine were recovered. Incubation of the native peptide with trypsin gave a pentapeptide, a tripeptide, and free Lys. 2,4-Dinitrophenyl-histidin...

In a bacterial cell, the DNA is in the: Answer- nucleoid A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: Answer- the nucleus In eukaryotes, the nucleus is enclosed by a double membrane called the: Answer- nuclear envelope The dimensions of living cells are limited, on the lower end by the minimum number of biomolecules necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. Except for highly elo...

In a bacterial cell, the DNA is in the: - nucleoid A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: - the nucleus In eukaryotes, the nucleus is enclosed by a double membrane called the: - nuclear envelope The dimensions of living cells are limited, on the lower end by the minimum number of biomolecules necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. Except for highly elongated cells, they us...

BCH 3025 Exam 1 Modules 1-5 Questions and Answers | Latest Version | 2024/2025 | Already Passed **Where is the DNA located in a bacterial cell?** - A) cell envelope. - B) cell membrane. - C) nucleoid. - D) nucleus. - E) ribosomes. **What was a major evolutionary development in eukaryotes compared to prokaryotes?** - A) DNA. - B) photosynthetic capability. - C) plasma membranes. - D) ribosomes. - E) the nucleus. **In eukaryotic cells, what structure encloses the nucleus...