Bch 3025 - Study guides, Class notes & Summaries

The compound that consists of ribose linked by an N-glycosidic bond to N-9 of adenine is: A) a deoxyribonucleoside. B) a purine nucleotide. C) a pyrimidine nucleotide. D) adenosine monophosphate. E) adenosine. - E) adenosine A major component of RNA but not of DNA is: A) adenine. B) cytosine. C) guanine. D) thymine. E) uracil. - E) uracil. The difference between a ribonucleotide and a deoxyribonucleotide is: A) a deoxyribonucleotide has an —H instead of an —O...

BCH 3025 Exam 1 Extra with questions and answers (download to pass).

A dynamic steady state results when A. a molecule stops being degraded. B. an organism is at equilibrium with its surroundings. C. there is no net energy transfer. D. the rate of intake or synthesis of a molecule equals the rate of its disappearance - Choice D is correct. A dynamic steady state results when the rate of synthesis or intake of a molecule equals the rate of its breakdown, consumption, or conversion into some other product. For example, a dynamic steady state in the blood ma...

Which of the following is not required in the synthesis of fatty acids? A) Acetyl-CoA B) Biotin C) HCO3- (CO2) D) Malonyl-CoA E) NADH - E) NADH Which of the following is not true of the reaction producing malonyl-CoA during fatty acid synthesis? A) It is stimulated by citrate. B) It requires acyl carrier protein (ACP). C) It requires CO2 (or bicarbonate). D) One mole of ATP is converted to ADP + Pi for each malonyl-CoA synthesized. E) The cofactor is biotin. - B) It requir...

If the 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 left to right. Answer- E) will proceed spontaneously from left to right. For the reaction A - B,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...

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: 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....

If the 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 left to right. - E) will proceed spontaneously from left to right. For the reaction A - B,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 o...

bch 3025 exam 3 with complete solutions 2024_2025.