Concept explainers
(a)
Interpretation:
The structural formula of the
Concept Introduction:
The Nucleotide consists of the Nitrogenous base, Sugar molecule and Phosphate ion. The Nitrogenous base and Sugar molecule are linked by β-N-glycosidic bond. The Sugar molecule and phosphate ion are linked by ester bond. The base and sugar molecule are said to be Nucleoside.
(b)
Interpretation:
The structural formula of the nucleotide Guanosine-
Concept Introduction:
The Nucleotide consists of the Nitrogenous base, Sugar molecule and Phosphate ion. The Nitrogenous base and Sugar molecule are linked by β-N-glycosidic bond. The Sugar molecule and phosphate ion are linked by ester bond. The base and sugar molecule are said to be Nucleoside.
(c)
Interpretation:
The structural formula of the nucleotide
Concept Introduction:
The Nucleotide consists of the Nitrogenous base, Sugar molecule and Phosphate ion. The Nitrogenous base and Sugar molecule are linked by β-N-glycosidic bond. The Sugar molecule and phosphate ion are linked by ester bond. The base and sugar molecule are said to be Nucleoside.
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Organic Chemistry
- Suppose that 28% of the nucleotides in a DNA molecule are deoxythymidine 5'-monophosphate, and that during DNA replication the percentage amounts of available nucleotide bases art 22% A, 22% C, 28% G. and 28% T. Which base would be depleted first in the replication process?arrow_forwardConsider the following peptide : Phe – Glu – Ser – Met and Val – Trp – Cys – Leu. Do these peptides have different net charges at (a) pH 1? (b) pH 7? Indicate the charges at both pH valuesarrow_forwardResearchers analysed a glycopeptide (a peptide carrying one or several oligosaccharide groups) and determined both the sequence of the peptide and the sequence of the sugar molecule. The latter was identified as a diholoside coupled to the peptide by an osidic bond. The systematic name of this sugar is: B-D-glucopyranosyl-(1→4)-ß-D-galactopyranose. : Represent the chemical formula of this diholoside in a way that all oses are Question 1 represented according to the Haworth convention. Apart from the furane and/or pyrane cycles all atoms of this molecule must be given.arrow_forward
- Answer the following questions:(i) Why are vitamin A and vitamin C essential for us?(ii) What is the difference between a nucleoside and a nucleotide?arrow_forward(a) Why can’t two purine bases (A and G) form a base pair and hydrogen bond to each other on two strands of DNA in the double helix? (b) Why is hydrogen bonding between guanine and cytosine more favorable than hydrogen bonding between guanine and thymine?arrow_forward(iii)How many different trinucleotide can be formed by combining the nucleotide bases ATG? Each trinucleotide must contain one of each baseHINT;One combination is A-T-G.arrow_forward
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- the most prominent secondary structure element in silk fibroin is (a) beta sheet (b) e-amino group (c) alpha helix (d) antiparallel double helix (e) alphlamdapi n alpha helical coilarrow_forwardProvide the amino acid sequence for human insulin in the box provided (copy and paste the amino acid from the bottom of the NCBI page for AAH05255.1; leave the numbers 1 and 61 and do NOT eliminate spaces). 1 malwarrow_forwardWhat is the structure, origin and catalytic role of Nicotinamide nucleotides?arrow_forward
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