Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Textbook Question
Chapter 28.SE, Problem 23AP
The DNA of sea urchins contains about 32% A. What percentages of the other three bases would you expect in sea urchin DNA? Explain.
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III. Proteins
1. The protein illustrated below was isolated from a superhuman being. Scientists theorized that
it was the source of power of its power.
CH3
NH
`CH3
NH
NH
NH
'NH
NH
`NH
`NH
`NH
H3C
H3C
H3C
`NH2
Construct the
sequence
of the protein using the three letter symbol.
а.
A protein structure is solely determined by the sequence of amino acids in the
primary structure. Suppose that you were to genetically engineer a new protein by
keeping the exact same sequence, but it was completely reversed in the order of
amino acids compared to the original. Would the new protein have the same tertiary
structure as the original? Why?
Directions: Choose the letter of the best answer. Use a separate sheet of paper.
1.
Nutritional chemists have found that burning 1 gram of fat releases twice
the amount of heat energy as burning 1 gram of starch. Based on this
information, which type of biomolecule would cause a person to gain more weight?
A. carbohydrate
B. fat
C. proteins
D. nucleic acid
Which biomolecular group carries and passes on the hereditary information
2.
of the organism?
C. nucleic acids
D. proteins
A. carbohydrates
B. lipids
Lipids are insoluble in water because lipid molecules are
A. hydrophilic
B. neutral
Atom is the basic unit of a chemical element. What are the atoms that
3.
C. hydrophobic
D. Zwitter ions
4.
make up carbohydrates?
A. C and H
C. C, H and O
D. C, H, O and N
B. C, H and N
5. Which organic molecules are the primary energy source of the human body?
C. nucleic acids
A. carbohydrates
B. lipids
D. proteins
Chapter 28 Solutions
Organic Chemistry
Ch. 28.1 - Draw the full structure of the DNA dinucleotide...Ch. 28.1 - Draw the full structure of the RNA dinucleotide...Ch. 28.2 - What sequence of bases on one strand of DNA is...Ch. 28.4 - Show how uracil can form strong hydrogen bonds to...Ch. 28.4 - What RNA base sequence is complementary to the...Ch. 28.4 - From what DNA base sequence was the following RNA...Ch. 28.5 - List codon sequences for the following amino...Ch. 28.5 - List anticodon sequences on the tRNAs carrying the...Ch. 28.5 - What amino acid sequence is coded by the following...Ch. 28.5 - What is the base sequence in the original DNA...
Ch. 28.7 - Prob. 11PCh. 28.7 - Prob. 12PCh. 28.SE - Identify the following bases, and tell whether...Ch. 28.SE - Identify the following nucleotide, and tell how it...Ch. 28.SE - Amine bases in nucleic acids can react with...Ch. 28.SE - The final step in DNA synthesis is deprotection by...Ch. 28.SE - The final step in the metabolic degradation of...Ch. 28.SE - One of the steps in the biosynthesis of a...Ch. 28.SE - One of the steps in the metabolic degradation of...Ch. 28.SE - One of the steps in the biosynthesis of uridine...Ch. 28.SE - Human brain natriuretic peptide (BNP) is a small...Ch. 28.SE - Human and horse insulin both have two polypeptide...Ch. 28.SE - The DNA of sea urchins contains about 32% A. What...Ch. 28.SE - The codon UAA stops protein synthesis. Why does...Ch. 28.SE - Which of the following base sequences would most...Ch. 28.SE - For what amino acids do the following...Ch. 28.SE - Prob. 27APCh. 28.SE - Prob. 28APCh. 28.SE - Draw the complete structure of the ribonucleotide...Ch. 28.SE - Draw the complete structure of the...Ch. 28.SE - Give an mRNA sequence that will code for the...Ch. 28.SE - Give an mRNA sequence that will code for the...Ch. 28.SE - What amino acid sequence is coded for by the...Ch. 28.SE - What amino acid sequence is coded for by the...Ch. 28.SE - Prob. 35APCh. 28.SE - Show the steps involved in a laboratory synthesis...Ch. 28.SE - Draw the structure of cyclic adenosine...Ch. 28.SE - Prob. 38AP
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- The base composition for one of the strands of a DNA double helix is 19% A, 34% C, 28% G, and 19% T. What is the percent base composition for the other strand of the DNA double helix?arrow_forwardDo the amino acid sequences: valine-asparagine and asparagine-valine represent the same compound? Explain.arrow_forwardThe base sequences in mRNA that code for certain amino acids are Glu: GAA, GAG Val: GUU, GUC, GUA, GUG Met: AUG Trp: UGG Phe: UUU, UUC Asp: GAU, GAC These sequences are complementary to the sequences in DNA. a. Give the corresponding sequences in DNA for the amino acids listed above. b. Give a DNA sequence that would code for the peptide trp-glu-phe-met. c. How many different DNA sequences can code for the tetrapeptide in part b? d. What is the peptide that is produced from the DNA sequence TACCTGAAG? e. What other DNA sequences would yield the same tripeptide as in part d?arrow_forward
- (a) How many tripeptides can be made from glycine, alanine, and leucine, using each amino acid only once per tripeptide? (b) Write the structural formulas of these tripeptides and name them in the shorthand abbreviation used for showing amino acid sequences.arrow_forward. How many possible primary structures exist for a small polypeptide containing four individual amino acids?arrow_forwarda Describe the three components of a nucleotide. b How does the structure of an RNA nucleotide differ from that of a DNA nucleotide?arrow_forward
- What functional groups are found in all amino acids? How many different amino acids are found in naturally occurring proteins?arrow_forwardDo the DNA sequences ATGC and CGTA represent the same compound? Explain.arrow_forwardAlthough RNA is single-stranded, the strand sometimes folds back on itself to give a complementary portion. What would be the complementary portion of the RNA fragment having the bases uracil-cytosine-guanine? A virus is a particle that contains DNA or RNA that is surrounded by a coat of protein that can replicate only in a host cell. The influencza virus shown in this electron microscope image is an RNA virus.arrow_forward
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Nucleic acids - DNA and RNA structure; Author: MEDSimplified;https://www.youtube.com/watch?v=0lZRAShqft0;License: Standard YouTube License, CC-BY