what is the correct relationship among dna, genes and chromosomes? a) a gene contains many...
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![Page 1: What is the correct relationship among DNA, genes and chromosomes? A) A gene contains many chromosomes which are composed of proteins B) A chromosome](https://reader038.vdocuments.mx/reader038/viewer/2022103022/56649d885503460f94a6d8aa/html5/thumbnails/1.jpg)
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What is the correct relationship among DNA, genes and chromosomes? A)A gene contains many chromosomes which are composed of proteins B)A chromosome contains many genes which are composed of DNA C)A gene is composed of proteins which are found on the chromosomes D)A chromosome contains many genes which are composed of proteins
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What is the correct relationship among DNA, genes and chromosomes? A)A gene contains many chromosomes which are composed of proteins B)A chromosome contains many genes which are composed of DNA C)A gene is composed of proteins which are found on the chromosomes D)A chromosome contains many genes which are composed of proteins
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DNA and RNA are polymers of A. fatty acids B. nucleotidesC. monoglycerides
D. amino acids
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DNA and RNA are polymers of A. fatty acids B. nucleotidesC. monoglycerides
D. amino acids
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What are the parts of a nucleotide?
a. a phosphate, five-carbon sugar, and a nitrogen base b. a group of linked amino acidsc. one half of a DNA moleculed. a protein, a sugar, and a phosphatee. a phosphate, a six-carbon sugar, and a nitrogen base
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What are the parts of a nucleotide?
a. a phosphate, five-carbon sugar, and a nitrogen base b. a group of linked amino acidsc. one half of a DNA moleculed. a protein, a sugar, and a phosphatee. a phosphate, a six-carbon sugar, and a nitrogen base
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Which parts of a nucleotide make-up the backbone of a nucleic acid molecule?
A) phosphateB) sugarC) nitrogen base D) A and BE) B and C
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Which parts of a nucleotide make-up the backbone of a nucleic acid molecule?
A) phosphateB) sugarC) nitrogen base D) A and BE) B and C
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In double stranded DNA, the weak bonds between complementary nitrogen bases involve:
a. RNAb. DNAc. hydrogen bonds d. five-carbon sugarse. sulfur
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In double stranded DNA, the weak bonds between complementary nitrogen bases involve:
a. RNAb. DNAc. hydrogen bonds d. five-carbon sugarse. sulfur
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Which of the following is NOT one of the nitrogen bases in a DNA molecule?
a. adenineb. cytosinec. uracil d. thyminee. guanine
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Which of the following is NOT one of the nitrogen bases in a DNA molecule?
a. adenineb. cytosinec. uracil d. thyminee. guanine
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Cytosine will form a base pair only with:
a. cytosineb. adeninec. thymined. uracile. guanine
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Cytosine will form a base pair only with:
a. cytosineb. adeninec. thymined. uracile. guanine
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What is the base sequence of the DNA strand that would be complementary to the following single-stranded DNA molecule?
GGATCTGATCCAGTCA|||||||||||||||| _________________________________
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What is the base sequence of the DNA strand that would be complementary to the following single-stranded DNA molecule?
GGATCTGATCCAGTCA
||||||||||||||||CCTAGACTAGGTCAGT
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Identify components 1 and 2 of the DNAmolecule to the right.
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Identify components 1 and 2 of the DNAmolecule to the right.1 = a phosphate2 = deoxyribose sugar
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In this DNA, which of the following can 3 and 4 be?a)A and Gb)U and Ac)C and Cd)A and T
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In this DNA, which of the following can 3 and 4 be?a)A and Gb)U and Ac)C and Cd)A and T
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In this DNA, 3 and 4 are held Together bya)Barry Bondsb)Covalent Bondsc)Peptide bondsd)Hydrogen bonds
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In this DNA, 3 and 4 are held Together bya)Barry Bondsb)Covalent Bondsc)Peptide bondsd)Hydrogen bonds
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DNA replication A. occurs by the addition of nucleotides to the end of the DNA molecule. B. results in the formation of four new DNA strands. C. produces two brand new DNA strands that do not resemble the original strandD. uses each strand of a DNA molecule as a template for the creation of a new strand. E. begins when two DNA molecules join together to exchange segments.
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DNA replication A. occurs by the addition of nucleotides to the end of the DNA molecule. B. results in the formation of four new DNA strands. C. produces two brand new DNA strands that do not resemble the original strandD. uses each strand of a DNA molecule as a template for the creation of a new strand. E. begins when two DNA molecules join together to exchange segments.
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Describe what is happening in eachstep of DNA replication(figure to right)
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Describe what is happening in eachstep of DNA replication(figure to right)
1: one parent double stranded DNA2: DNA unzips and unwinds3: Complementary nitrogen bases match up forming a new strand of DNA using an old strand as a template4: Two daughter double helices; each ½ old and ½ new
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The enzyme ________ unzips and unwinds the DNA molecule. A) DNA polymerase B) helicase C) primase D) DNA ligase E) unzipase
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The enzyme ________ unzips and unwinds the DNA molecule. A) DNA polymerase B) helicase C) primase D) DNA ligase E) unzipase
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The enzyme ________ assembles a new strand of DNA according to the base pairing rules and using an old strand of DNA as the template.. A) DNA polymerase B) helicase C) primase D) DNA ligase E) unzipase
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The enzyme ________ assembles a new strand of DNA according to the base pairing rules and using an old strand of DNA as the template.. A) DNA polymerase B) helicase C) primase D) DNA ligase E) unzipase
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A double-stranded DNA is 21% cytosine. What is the percent of thymine in that DNA?
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A double-stranded DNA is 21% cytosine. What is the percent of thymine in that DNA?
29 % thymine
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A double-stranded DNA is 38% adenine.What is the percent of cytosine in that DNA?
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A double-stranded DNA is 38% adenine.What is the percent of cytosine in that DNA?
12 % cytosine
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In the semi-conservative DNA replication, daughter DNA molecules consist of:
a. one-half of the molecules with two parental strands and one-half of the molecules with two new strandsb. all molecules with interspersed parental and new segmentsc. all molecules with one parental and one new strandd. all molecules with two new strands
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In the semi-conservative DNA replication, daughter DNA molecules consist of:
a. one-half of the molecules with two parental strands and one-half of the molecules with two new strandsb. all molecules with interspersed parental and new segmentsc. all molecules with one parental and one new strandd. all molecules with two new strands
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The coded information in a DNA molecule determines the formation of
A. polysaccharidesB. polypeptidesC. monosaccharidesD. lipids
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The coded information in a DNA molecule determines the formation of
A. polysaccharidesB. polypeptidesC. monosaccharidesD. lipids
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What is a gene?
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What is a gene?A gene is a segment of DNA that codes for a protein.
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Which one of the following sequences best describes the flow of information when a gene directs the synthesis of a cellular component? A.RNA → DNA → RNA → protein B.DNA → RNA → protein C.protein → RNA → DNAD.DNA → amino acid → RNA → protein
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Which one of the following sequences best describes the flow of information when a gene directs the synthesis of a cellular component? A.RNA → DNA → RNA → protein B.DNA → RNA → protein C.protein → RNA → DNAD.DNA → amino acid → RNA → protein
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Two differences between DNA and RNA are that only the RNA contains a) ribose and uracil
b) deoxyribose and uracilc) deoxyribose and thymined) ribose and adeninee) ribose and thymine
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Two differences between DNA and RNA are that only the RNA contains a) ribose and uracil
b) deoxyribose and uracilc) deoxyribose and thymined) ribose and adeninee) ribose and thymine
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Which of the following correctly describes messenger RNA?
a. single strandedb. uracil replaces thyminec. many sugar to phosphate bonds are presentd. contains ribose sugare. all of the above
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Which of the following correctly describes messenger RNA?
a. single strandedb. uracil replaces thyminec. many sugar to phosphate bonds are presentd. contains ribose sugare. all of the above
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The process of making RNA from DNA is: a. transcription b. translation c. conjunctiond. peptide synthesise. this process cannot happen
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The process of making RNA from DNA is: a. transcription b. translation c. conjunctiond. peptide synthesise. this process cannot happen
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Where is RNA synthesized in a cell?
a. nucleus b. mitochondriac. ribosomed. endoplasmic reticulume. golgi body
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Where is RNA synthesized in a cell?
a. nucleus b. mitochondriac. ribosomed. endoplasmic reticulume. golgi body
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The enzyme responsible for synthesizing RNA is called
a. topoisomerase b. helicasec. RNA synthased. RNA hydrolasee. RNA polymerase
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The enzyme responsible for synthesizing RNA is called
a. topoisomerase b. helicasec. RNA synthased. RNA hydrolasee. RNA polymerase
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What is the base sequence of the RNA strand that would be transcribed from the DNA sequence below?
GGATCTGATCCAGTCA|||||||||||||||| _________________________________
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What is the base sequence of the RNA strand that would be transcribed from the DNA sequence below?
GGATCTGATCCAGTCA
||||||||||||||||CCUAGACUAGGUCAGU
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The process of making proteins from RNA is:
a. transcription b. translation c. conjunctiond. peptide synthesise. this process cannot happen
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The process of making proteins from RNA is:
a. transcription b. translation c. conjunctiond. peptide synthesise. this process cannot happen
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The genetic code is redundant. This means A) One codon may code for several amino
acids B) The majority of organisms use the same
genetic code C) mRNA has sections of nucleotides that are
removed. D) Several different codons may code for the
same amino acid.
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The genetic code is redundant. This means A) One codon may code for several amino
acids B) The majority of organisms use the same
genetic code C) mRNA has sections of nucleotides that are
removed. D) Several different codons may code for the
same amino acid.
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The genetic code is universal. This means A) One codon may code for several amino
acids B) The majority of organisms use the same
genetic code C) mRNA has sections of nucleotides that are
removed. D) Several different codons may code for the
same amino acid.
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The genetic code is universal. This means A) One codon may code for several amino
acids B) The majority of organisms use the same
genetic code C) mRNA has sections of nucleotides that are
removed. D) Several different codons may code for the
same amino acid.
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Any change in the nucleotide sequence of DNA is called A)an advantageB) codon. C)a mutation. D)an anticodon
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Any change in the nucleotide sequence of DNA is called A)an advantageB) codon. C)a mutation. D)an anticodon
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A physical or chemical agent that changes the nucleotide sequence of DNA is called
a) an anticodon b) a terminatorc) a transposon d) a mutagen.
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A physical or chemical agent that changes the nucleotide sequence of DNA is called
a) an anticodon b) a terminatorc) a transposon d) a mutagen.
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A frameshift mutation could result from A) a base insertion only B) a base deletion only C) a base substitution only D) deletion of three consecutive bases E) either an insertion or a deletion of a base
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A frameshift mutation could result from A) a base insertion only B) a base deletion only C) a base substitution only D) deletion of three consecutive bases E) either an insertion or a deletion of a base
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A point mutation could result from A) a base insertion only B) a base deletion only C) a base substitution only D) deletion of three consecutive bases E) either an insertion or a deletion of a base
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A point mutation could result from A) a base insertion only B) a base deletion only C) a base substitution only D) deletion of three consecutive bases E) either an insertion or a deletion of a base
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Which mutation would be most likely to have a catastrophic effect on the functioning of a protein?
A) a base substitution near the start of the coding sequence but not in the start codon
B) a base deletion near the beginning of the coding sequence but not in the start codon
C) a base deletion near the end of the coding sequence, but not in the stop codon
D) deletion of three bases near the start of the coding sequence, but not in the start codon
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Which mutation would be most likely to have a catastrophic effect on the functioning of a protein?
A) a base substitution near the start of the coding sequence but not in the start codon
B) a base deletion near the beginning of the coding sequence but not in the start codon
C) a base deletion near the end of the coding sequence, but not in the stop codon
D) deletion of three bases near the start of the coding sequence, but not in the start codon
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Which of the following is not an effect of a mutation?
A) prevents a protein from forming B) lowers the amount of a protein C) adds a function to a protein D) any of the above can occur
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Which of the following is not an effect of a mutation?
A) prevents a protein from forming B) lowers the amount of a protein C) adds a function to a protein D) any of the above can occur
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Changing the codon AGC to AGA represents a ____ mutation.
A) Point B) Duplication C) Frameshift D) Deletion
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Changing the codon AGC to AGA represents a ____ mutation.
A) Point B) Duplication C) Frameshift D) Deletion
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A spontaneous mutation usually originates as an error in
A) DNA replication. B) DNA transcriptionC) translation. D) reverse transcription.
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A spontaneous mutation usually originates as an error in
A) DNA replication. B) DNA transcriptionC) translation. D) reverse transcription.
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The codon for leucine is CUC. How many different amino acids could possibly result from single-base substitutions?
A) 1 B) 3 C) 5 D) 7
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The codon for leucine is CUC. How many different amino acids could possibly result from single-base substitutions?
A) 1 B) 3 C) 5 D) 7
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True or False? A mutation always causes a mutant phenotype.
A) true B) false C) cannot be determined
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True or False? A mutation always causes a mutant phenotype.
A) true B) false C) cannot be determined