Nutrition: Concepts and Controversies
14th Edition
ISBN: 9781305886865
Author: Sizer, Frances , WHITNEY, Ellie
Publisher: Cengage Learning
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Textbook Question
Chapter 6, Problem 4SC
Some segments of a protein strand coil, somewhat like a metal spring, because
a. amino acids at different places along the strand are chemically attracted to each other.
b. the protein strand has been denatured by acid.
c. the protein strand is missing one or more essential amino acids.
d. a coil structure allows access by enzymes for digestion.
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Which of the following amino acid is acetylated when DNA is unwound from histones?
a. Asparagine
b. Lysine
c. Arginine
d. Glycine
Ethidium Bromide is a chemical reagent that has been used to detect the presence of nucleic acids. It is known to fluoresce under UV light and the intensity of the fluoresence increases when it binds to the nucleic acids. Ethidium Bromide binds to polynucleotides
a
by binding directly to the bases on one of the strands.
b
by intercalating itself between the base pair stacks.
c
through the negatively charged phosphate groups.
d
through the hydroxyl group of the sugar molecule.
Which of the following DNA strands (oligonucleotides) would have a higher melting temperature? (Note: only one strand is shown, but assume that each is double stranded)
Select one:
a. They would all have about the same melting temperature.
b. ATGATCTACTATGAT
c. ATGCGTCGCGCAGCT
d. ATGATCGATATGCCA
e. ATGCGATCAGCTACG
Chapter 6 Solutions
Nutrition: Concepts and Controversies
Ch. 6 - Prob. 1RQCh. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Prob. 1CTCh. 6 - Prob. 2CTCh. 6 - The basic building blocks for protein are a....Ch. 6 - Prob. 2SCCh. 6 - Prob. 3SCCh. 6 - Some segments of a protein strand coil, somewhat...Ch. 6 - Prob. 5SC
Ch. 6 - Prob. 6SCCh. 6 - Prob. 7SCCh. 6 - Prob. 8SCCh. 6 - Prob. 9SCCh. 6 - Prob. 10SCCh. 6 - Prob. 11SCCh. 6 - The following are complementary proteins: pot...Ch. 6 - Prob. 13SCCh. 6 - Prob. 14SCCh. 6 - Prob. 15SCCh. 6 - Prob. 16SCCh. 6 - Prob. 17SCCh. 6 - Prob. 18SCCh. 6 - Prob. 19SCCh. 6 - Prob. 20SC
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, health-nutrition and related others by exploring similar questions and additional content below.Similar questions
- Indicate whether each of the following statements about the double-helix secondary structure of DNA is true or false. a. The two polynucleotide strands are complementary rather than identical. b. Bases present extend outward from the double helix. c. Covalent bonding occurs between the two polynucleotide strands. d. The two polynucleotide strands run in the 5′-to-3′ directionarrow_forwardWhich of the following statements is/are TRUE about wobble base pairing? a. Explains why there are 64 codons but less than 64 tRNAs. b. Codons for an amino acid differ in their 1st base. c. Several tRNAs can bind to more than one anticodon. d. Can minimize damage caused by misreading of the code.arrow_forwardA nucleotide is composed of all of the following excepta. 5-carbon sugar. c. 6-carbon sugar.b. nitrogen base. d. phosphate grouparrow_forward
- For each of the following, identify the type of RNA involved (mRNA, rRNA, or tRNA). a. Transports the correct amino acid to the ribosome, using the information encoded in the mRNA. b. Is a major component of ribosomes. c. Specifies the order of amino acids in a protein, using a series of three-base codons, where different amino acids are specified by particular codons. d. Contains a three-base anticodon that pairs with a complementary codon revealed in the mRNA. e. Assists in making the bonds that link amino acids together to make a protein.arrow_forwardDefine the following terms: a. β-hairpin b. supersecondary structure c. fibrous protein d. globular protein e. mosaic proteinarrow_forwardThe energy to form the phosphodiester bond between nucleotides in a single strand comes from A, the nucleotides in Triphosphate form B. only from ATP C. The single Phosphate of nucleotides D. GTP provides the energyarrow_forward
- The following are all true of RNA, excepta. it is a single-stranded molecule existing in helical form. b. it contains uracil rather than thymine as the complementary base-pairing mate for adenine.c. uracil does not follow the pairing rules;therefore, the inherent DNA code ischanged.d. the sugar in RNA is ribose rather than deoxyribosearrow_forwardRoughly how many amino acids are there in one turn of an alpha helix? Select one: A. 2.8 B. 4.2 C. 3.6 D. 1arrow_forwardThe CFTR membrane protein has an alpha helix that spans the membrane. The amino acid sequence of the central portion of this alpha helix, which is embedded within the membrane, is which one of the sequences below? Sequences are provided in the single letter code. a. VVVEVVVVEVVEEEVE b. VVVLVVVVLVVLLLVL c. VVVLVVVVREERRRER d. EEEREEEEREERRRERarrow_forward
- Which of the following statements is correct? A. The 3’-end of a DNA double helix implies that both strands of the DNA helix have a free 3’- hydroxyl group on that end. B. DNA can form double helix while RNA cannot form double helix. C. Both A and B. D. Neither A nor B. The role of serine at the active site of serine proteases is to act as a(n) ________ catalyst, while the histidine residue serves as a(n) ________ catalyst. A. weak; strong B. acid-base; covalent C. anionic; ionic D. covalent; acid-base E. strong; weakarrow_forwardDouble-stranded regions of RNA: a. are less stable than double-stranded regions of DNA. b. can be observed in the laboratory, but probably have no biological relevance. c. can form between two self-complementary regions of the same single strand of RNA. d. do not occur. e. have the two strands arranged in parallel (unlike those of DNA, which are antiparallel).arrow_forwardWhich of the following is an example of protein denaturation? * A. Amino acids fold into repeating patterns due to hydrogen bonding of the peptide backbone. B. Several amino acids are joined together together via peptide bonds. C. A protein binds with with a substrate, lowering the activation energy of reaction. D. A protein is exposed to extremely high heat, causing it to lose its secondary structure and be left with only its primary structure. E. Results to unfolding, partial or incomplete disorganization of the protein's secondary and tertiary structure.arrow_forward
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