
Concept explainers
(a)
Interpretation:
A structure of a purine base should be drawn.
Concept Introduction:
The nitrogenous base in which two carbon-nitrogen ring is present is known as purine.
(b)
Interpretation:
The structure of a nucleoside which contains 2-deoxyribose and apyrimidine base should be drawn.
Concept Introduction:
Nucleoside consists of a nucleobase and five carbon sugar.
An
(c)
Interpretation:
The structure of a
Concept Introduction:
Nucleotide consists of a nucelobase, five carbon sugar and one or more phosphate group.
The nitrogenous base in which two carbon-nitrogen ring is present is known as purine.
(d)
Interpretation:
The structure of a triphosphate of guanosineshould be drawn.
Concept Introduction:
Nucleotide consists of a nucelobase, five carbon sugar and one or more phosphate groups.
Nucleoside consists of a nucleobase and five carbon sugar.
The nitrogenous base in which two carbon-nitrogen ring is present is known as purine.

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Chapter 22 Solutions
General, Organic, and Biological Chemistry - 4th edition
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- Given a 1,3-dicarbonyl compound (R1-CO-CH2-CO-R2), indicate the formula of the compound obtaineda) if I add hydroxylamine (NH2OH) to give an isooxazole.b) if I add thiosemicarbazide (NH2-CO-NH-NH2) to give an isothiazole.arrow_forwardAn orange laser has a wavelength of 610 nm. What is the energy of this light?arrow_forwardThe molar absorptivity of a protein in water at 280 nm can be estimated within ~5-10% from its content of the amino acids tyrosine and tryptophan and from the number of disulfide linkages (R-S-S-R) between cysteine residues: Ε280 nm (M-1 cm-1) ≈ 5500 nTrp + 1490 nTyr + 125 nS-S where nTrp is the number of tryptophans, nTyr is the number of tyrosines, and nS-S is the number of disulfide linkages. The protein human serum transferrin has 678 amino acids including 8 tryptophans, 26 tyrosines, and 19 disulfide linkages. The molecular mass of the most dominant for is 79550. Predict the molar absorptivity of transferrin. Predict the absorbance of a solution that’s 1.000 g/L transferrin in a 1.000-cm-pathlength cuvet. Estimate the g/L of a transferrin solution with an absorbance of 1.50 at 280 nm.arrow_forward
- In GC, what order will the following molecules elute from the column? CH3OCH3, CH3CH2OH, C3H8, C4H10arrow_forwardBeer’s Law is A = εbc, where A is absorbance, ε is the molar absorptivity (which is specific to the compound and wavelength in the measurement), and c is concentration. The absorbance of a 2.31 × 10-5 M solution of a compound is 0.822 at a wavelength of 266 nm in a 1.00-cm cell. Calculate the molar absorptivity at 266 nm.arrow_forwardHow to calculate % of unknown solution using line of best fit y=0.1227x + 0.0292 (y=2.244)arrow_forward
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