NUTRITION-MINDTAP (1 TERM)
15th Edition
ISBN: 9781337907101
Author: Sizer
Publisher: CENGAGE L
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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 statements about nucleic acids is not correct?
Select one:
A.
In DNA the distance between the strands of the double helix is relatively constant.
B.
The growing DNA polymer is synthesized in the 5' to 3' direction.
C.
The enzymes that catalyze DNA synthesis are known as DNA polymerases.
D.
RNA strands are synthesized in the 3' to 5' direction.
E.
Unlike DNA, RNA is easily cleaved because the 2'-OH group of the ribose is a nucleophile that catalyzes hydrolysis of the strand.
Label each statement as pertaining to DNA, RNA, or both. a. The polynucleotide is double stranded. b. The polynucleotide may contain adenine. c. The polynucleotide may contain dGMP. d. The polynucleotide is a polymer of ribonucleotides.
Consider the following DNA sequence:CATGTGTAGTCTAAAa. Write the sequence of the DNA strand that would be repli-cated from this one.b. Write the sequence of the RNA molecule that would betranscribed from the DNA strand.c. State how many codons the sequence specifies.d. State how many amino acids the sequence specifies
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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
- The antiparallel nature of DNA refers to a. its charged phosphate groups. b. the pairing of bases on one strand with bases on the other strand. c. the formation of hydrogen bonds between bases from opposite strands. d. the opposite direction of the two strands of nucleotides.arrow_forwardEthidium 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.arrow_forwardThe phosphodiester bond in DNA links: a. The 2’ carbon of the ribose to the 3’ carbon of the subsequent ribose. b. The 3’ carbon of the ribose to the 5’ carbon of the subsequent ribose. c. The 3’ carbon of the ribose to the 2’ carbon of the subsequent ribose. d. The 2’ carbon of the ribose to the 5’ carbon of the subsequent ribose. e. The 1’ carbon of the ribose to the 5’ carbon of the subsequent ribose.arrow_forward
- 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. ATGCGATCAGCTACGarrow_forwardIndicate 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_forward
- Which of the following most accurately describes the anticodon? A. Contains a sequence complementary to the codon. B. Reintroduces thymine back into the sequence and removes uracil. C. Contains the sequence in the reverse orientation (3-5 vs 5-3). D. Contains a sequence identical to the codon.arrow_forwardA nucleotide is composed of all of the following excepta. 5-carbon sugar. c. 6-carbon sugar.b. nitrogen base. d. phosphate grouparrow_forwardA phosphate group is connected to the 5’ carbon of deoxyribose on one end of a strand of nucleotides. The other end has a hydroxyl group attached to the 3’ carbon. A. Both statements are correct B. Both statements are incorrect C. First statement is Correct, Second is Incorrect D. First statement is Incorrect, Second is Correctarrow_forward
- Determine the effect of the following mutations on the DNA sequence. In each case, the mutation is described after the sequence. Guanine nucleotide (G shown in red in the DNA sequence below) was substituted by C Write out the sequence of the mutated DNA and the protein made from it. What is the effect of this mutation on the protein? (For example, how will the mutation affect the length and sequence of the protein? What about the function of the protein?)arrow_forwardDetermine the effect of the following mutations on the DNA sequence. In each case, the mutation is described after the sequence. Guanine nucleotide (G shown in red in the DNA sequence below) was substituted by C Write out the sequence of the mutated DNA and the protein made from it. What is the effect of this mutation on the protein? (For example, how will the mutation affect the length and sequence of the protein? What about the function of the protein?) 3' TACATGGTTGTGCTAATT 5' Carrow_forwardEach of the following statements about protein synthesis is false.Correct each to make a true statement. a. In a gene, each nucleotide specifies one amino acid in a protein sequence. b. A transcription factor must bind to the promoter region of a gene before the enzyme DNA synthetase is able to bind and begin transcription. c. The enzyme RNA polymerase builds a strand of transfer RNA, whose codons are complementary to DNA’s triplets. d. Proteins destined for secretion from the cell enter the nucleus after translation, to be folded and modified. e. During translation, amino acids are delivered by the messenger RNA transcriparrow_forward
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