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

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

DNA and RNA are polymers of A. fatty acids B. nucleotidesC. monoglycerides

D. amino acids

DNA and RNA are polymers of A. fatty acids B. nucleotidesC. monoglycerides

D. amino acids

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

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

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

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

In double stranded DNA, the weak bonds between complementary nitrogen bases involve:  

a. RNAb. DNAc. hydrogen bonds d. five-carbon sugarse. sulfur

In double stranded DNA, the weak bonds between complementary nitrogen bases involve:  

a. RNAb. DNAc. hydrogen bonds d. five-carbon sugarse. sulfur

Which of the following is NOT one of the nitrogen bases in a DNA molecule?  

a. adenineb. cytosinec. uracil d. thyminee. guanine

Which of the following is NOT one of the nitrogen bases in a DNA molecule?  

a. adenineb. cytosinec. uracil d. thyminee. guanine

Cytosine will form a base pair only with:  

a. cytosineb. adeninec. thymined. uracile. guanine

Cytosine will form a base pair only with:  

a. cytosineb. adeninec. thymined. uracile. guanine

What is the base sequence of the DNA strand that would be complementary to the following single-stranded DNA molecule?

GGATCTGATCCAGTCA|||||||||||||||| _________________________________

What is the base sequence of the DNA strand that would be complementary to the following single-stranded DNA molecule?

GGATCTGATCCAGTCA

||||||||||||||||CCTAGACTAGGTCAGT

Identify components 1 and 2 of the DNAmolecule to the right.

Identify components 1 and 2 of the DNAmolecule to the right.1 = a phosphate2 = deoxyribose sugar

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

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

In this DNA, 3 and 4 are held Together bya)Barry Bondsb)Covalent Bondsc)Peptide bondsd)Hydrogen bonds

In this DNA, 3 and 4 are held Together bya)Barry Bondsb)Covalent Bondsc)Peptide bondsd)Hydrogen bonds

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.

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.

Describe what is happening in eachstep of DNA replication(figure to right)

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

The enzyme ________ unzips and unwinds the DNA molecule. A) DNA polymerase B) helicase C) primase D) DNA ligase E) unzipase

The enzyme ________ unzips and unwinds the DNA molecule. A) DNA polymerase B) helicase C) primase D) DNA ligase E) unzipase

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

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

A double-stranded DNA is 21% cytosine. What is the percent of thymine in that DNA?

A double-stranded DNA is 21% cytosine. What is the percent of thymine in that DNA?

29 % thymine

A double-stranded DNA is 38% adenine.What is the percent of cytosine in that DNA?

A double-stranded DNA is 38% adenine.What is the percent of cytosine in that DNA?

12 % cytosine

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

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

The coded information in a DNA molecule determines the formation of

A. polysaccharidesB. polypeptidesC. monosaccharidesD. lipids

The coded information in a DNA molecule determines the formation of

A. polysaccharidesB. polypeptidesC. monosaccharidesD. lipids

What is a gene?

What is a gene?A gene is a segment of DNA that codes for a protein.

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  

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  

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

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

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

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

The process of making RNA from DNA is:   a. transcription b. translation c. conjunctiond. peptide synthesise. this process cannot happen

The process of making RNA from DNA is:   a. transcription b. translation c. conjunctiond. peptide synthesise. this process cannot happen

Where is RNA synthesized in a cell?  

a. nucleus b. mitochondriac. ribosomed. endoplasmic reticulume. golgi body

Where is RNA synthesized in a cell?  

a. nucleus b. mitochondriac. ribosomed. endoplasmic reticulume. golgi body

The enzyme responsible for synthesizing RNA is called  

a. topoisomerase b. helicasec. RNA synthased. RNA hydrolasee. RNA polymerase

The enzyme responsible for synthesizing RNA is called  

a. topoisomerase b. helicasec. RNA synthased. RNA hydrolasee. RNA polymerase

What is the base sequence of the RNA strand that would be transcribed from the DNA sequence below?

GGATCTGATCCAGTCA|||||||||||||||| _________________________________

What is the base sequence of the RNA strand that would be transcribed from the DNA sequence below?

GGATCTGATCCAGTCA

||||||||||||||||CCUAGACUAGGUCAGU

The process of making proteins from RNA is:  

a. transcription b. translation c. conjunctiond. peptide synthesise. this process cannot happen

The process of making proteins from RNA is:  

a. transcription b. translation c. conjunctiond. peptide synthesise. this process cannot happen

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.

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.

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.

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.

Any change in the nucleotide sequence of DNA is called A)an advantageB) codon. C)a mutation. D)an anticodon

Any change in the nucleotide sequence of DNA is called A)an advantageB) codon. C)a mutation. D)an anticodon

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.

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.

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

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

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

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

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

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

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

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

Changing the codon AGC to AGA represents a ____ mutation.

A) Point B) Duplication C) Frameshift D) Deletion

Changing the codon AGC to AGA represents a ____ mutation.

A) Point B) Duplication C) Frameshift D) Deletion

A spontaneous mutation usually originates as an error in

A) DNA replication. B) DNA transcriptionC) translation. D) reverse transcription.

A spontaneous mutation usually originates as an error in

A) DNA replication. B) DNA transcriptionC) translation. D) reverse transcription.

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

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

True or False? A mutation always causes a mutant phenotype.

A) true B) false C) cannot be determined

True or False? A mutation always causes a mutant phenotype.

A) true B) false C) cannot be determined