Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 9, Problem 7SQ
Summary Introduction
Introduction: DNA is double-stranded consisting of two anti-parallel strands of nucleotides. Both strands run in 5′-3′ direction and are held by the hydrogen bonds between
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Repair enzymes _____.
a.
repair only mutations that occur in mitochondrial DNA
b.
can only repair mutations that occur prior to replication
c.
can only repair mutations that occur after replication
d.
repair only DNA mismatch mutations
e.
repair only mutations that arise during replication
The sigma subunit of bacterial RNA polymerase _____.
a. binds to a bacterial gene’s promoter
b. is composed of both polypeptide and RNA molecules
c. is required for termination of transcription
d. is required for RNA polymerization
e. is required for ribosomal binding
Please consider figures 1 and 2 below.
5'
A
B
5' -I
H.
D.
Figure 1: Replication
Figure 2: Transcription
a. Which letters, A to J represent DNA strands that will be synthesized continuously?
b. At which letter, A to J, are ribonucleotides being added?
c. Name and describe the process that occurs in prokaryotes as the synthesized mRNA hangs free of the double helix while transcription continues.
d. In what direction will the replication bubble move in figure 1 as replication continues?
Rleace Ibol
ancwors (a) to (d)
Chapter 9 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 9 - RIPs as Cancer Drugs Researchers are taking a page...Ch. 9 - RIPs as Cancer Drugs Researchers are taking a page...Ch. 9 - RIPs as Cancer Drugs Researchers are taking a page...Ch. 9 - RIPs as Cancer Drugs Researchers are taking a page...Ch. 9 - A chromosome contains many different genes that...Ch. 9 - A binding .site for RNA polymerase is called a ___...Ch. 9 - In cells, most RNA molecules are ___ ; most DNA...Ch. 9 - Prob. 4SQCh. 9 - The main function of a DNA molecule is to ________...Ch. 9 - The main function of an mRNA molecule is to ___ ....
Ch. 9 - Prob. 7SQCh. 9 - Prob. 8SQCh. 9 - Prob. 9SQCh. 9 - Anticodons pair with ___ . a. mRNA codons b. DNA...Ch. 9 - Prob. 11SQCh. 9 - Prob. 12SQCh. 9 - Prob. 13SQCh. 9 - Energy that drives translation is provided mainly...Ch. 9 - Match the terms with the best description. ______...Ch. 9 - Researchers are designing and testing antisense...Ch. 9 - An anticodon has the sequence GCG. What amino acid...Ch. 9 - Each position of a codon can be occupied by one of...Ch. 9 - Prob. 4CTCh. 9 - Translate the .sequence of bases in the previous...Ch. 9 - Can you .spell your name (or someone else's) using...Ch. 9 - Bacteria use the.same stop codons as eukaryotes....
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- In order for DNA molecules to undergo recombination, ____. a. their strands must separate as in replication b. they must be from the same species c. one of the two DNA strands must be degraded d. they must be cut and spliced at specific nucleotide sequences e. they must first be transcribedarrow_forwardNumber 6arrow_forwardThe formation of peptide bonds between amino acids occurs _____. a. during transcription b. during the elongation step to translation c. during the assemble of the ribosome and mRNA d. while DNA is being replicatedarrow_forward
- Match Column A with Column B. transports amino acids to the site of protein synthesis has anticodon loop directs amino acid sequence of proteins contains the Shine-Delgarno sequence synthesized in the eukaryote nucleus found inside the ribosome region where the RNA binds to the DNA template…arrow_forwardWobble hypothesis indicates that: a. fatty acids are degraded 2 carbons at a time. O b. 16S-ribosomal RNA recognizes Shine-Dalgarno sequence of the mRNA and thus initiates protein synthesis. O C. DNA replication is semi-conservative. d. the 5'base of anticodons may recognize 1, 2 or 3 bases in the codons and thus only 31 different tRNA molecules can recognize 61 codons. e. DNA replication proceeds bidirectionally.arrow_forwardEnergy that drives transcription is provided mainly by_____ . a. ATP c. GTP b. RNA nucleotides d. RNA polymerasearrow_forward
- 1. From the given DNA strands:a. Identify the template and non-template strand.b. Give the mRNA product when the DNA is transcribed.c. What is the resulting amino acid sequence which will result from the mRNA?arrow_forwardD. radiodurans can survive strong ionizing radiation (gamma radiation). What DNA repair process? a. Reverse transcription b. Translation c. Homologous recombination d. DNA replication e. Transcriptionarrow_forward1 The role of DNA polymerases in DNA replication is to _____.? A attach free nucleotides to the new strand B link together short strands of DNA C synthesize an RNA primer to initiate DNA strand synthesis D separate the two strands of DNA 2 Cell A requires high concentrations of nicotinamide adenine dinucleotide phosphate (NADPH). Which pathways is the most active to meet the metabolic needs? A Beta-oxidation and ketogenesis B Glycolysis and glycogenolysis C Glycolysis and pentose phosphate pathway D Glycolysis, citric acid cycle and electron transport chain 3 Absence of glucose -6 phosphatase will result in the buildup of substrate A that feeds into ___. A gluconeogenesis B pentose phosphate pathway C Glucose-Alanine cycle D Cori cycle 4 The formation of pyrimidine dimers is a result from ___. A spontaneous errors during DNA replication B exposure to ultraviolet radiation C exposure to cigarette smoke D exposure to aflatoxins i need help on…arrow_forward
- Consider the following segment of DNA:5′ GCTTCCCAA 3′3′ CGAAGGGTT 5′Assume that the top strand is the template strand usedby RNA polymerase.a. Draw the RNA transcribed.b. Label its 5′ and 3′ ends.c. Draw the corresponding amino acid chain.d. Label its amino and carboxyl ends.Repeat parts a through d, assuming the bottom strand tobe the template strand.arrow_forwardDNA polymerase assembles new strands in a ____. a. 5' to 3' direction building the first half of a strand and a 3' to 5' direction building the second half of a strand b. 3' to 5' direction on the “old” 3' to 5' strand c. 5' to 3' direction building one strand and a 3' to 5' direction building the other stand d. 5' to 3' direction only e. 3' to 5' direction building the first half of a strand and a 5' to 3' direction building the second half of a strandarrow_forwardDuring elongation (in transcription), RNA polymerase has three prominent channels, or grooves. These channels provide sites for all of the following EXCEPT ___. A. A site for the entry of RNA nucleotides B. A site for the growing RNA strand to exit C. A site for the double-stranded DNA molecule it is transcribing D. A site for the entry of amino acidsarrow_forward
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