Question 1

According to Chargaff's rule, if the DNA of a species contains 20% adenine, what percent of guanine will it contain?

Accepted Answer

A)  20% 
B)  30% 
C)  50% 
D)  75% 
A)  20% 
B)  30% 
C)  50% 
D)  75% B

Question 2

Which of the following is not found in DNA?

Accepted Answer

A)  Cytosine 
B)  Guanine 
C)  Thymidine 
D)  Adenine 
E)  Uracil 
A)  Cytosine 
B)  Guanine 
C)  Thymidine 
D)  Adenine 
E)  Uracil E

Question 3

The pyrimidine bases are .

Accepted Answer

A)  cytosine, thymine, and uracil 
B)  adenine and guanine 
C)  adenine and thymine 
D)  cytosine and guanine 
A)  cytosine, thymine, and uracil 
B)  adenine and guanine 
C)  adenine and thymine 
D)  cytosine and guanine A

Question 4

A nucleoside consists of only a five-carbon sugar and a phosphate group.

Accepted Answer

A) True 
 B)False

Question 5

All nucleotides contain which of the following?

Accepted Answer

A)  A phosphate group 
B)  A five carbon sugar 
C)  One of five nitrogenous bases 
D)  All of the answers are correct 
A)  A phosphate group 
B)  A five carbon sugar 
C)  One of five nitrogenous bases 
D)  All of the answers are correct

Question 6

A DNA strand can be described as antiparallel but uncomplementary.

Accepted Answer

A) True 
 B)False

Question 7

The purine bases are .

Accepted Answer

A)  cytosine, thymine, and uracil 
B)  adenine and guanine 
C)  adenine and thymine 
D)  cytosine and guanine 
A)  cytosine, thymine, and uracil 
B)  adenine and guanine 
C)  adenine and thymine 
D)  cytosine and guanine

Question 8

The building blocks of DNA are called .

Accepted Answer

A)  Amino acids 
B)  Codons 
C)  Nucleotides 
D)  Alleles 
A)  Amino acids 
B)  Codons 
C)  Nucleotides 
D)  Alleles

Question 9

Tobacco mosaic virus (TMV) uses DNA as its genetic material.

Accepted Answer

A) True 
 B)False

Question 10

The backbone of the DNA molecule is formed by .

Accepted Answer

A)  Peptide bonds 
B)  Ribose sugars 
C)  Nitrogenous bases 
D)  Phosphodiester bonds 
E)  None of the answers are correct 
A)  Peptide bonds 
B)  Ribose sugars 
C)  Nitrogenous bases 
D)  Phosphodiester bonds 
E)  None of the answers are correct

Question 11

DNA is recognized as a left-handed molecule.
FALSE

Accepted Answer

A) True 
 B)False

Question 12

How does a RNA strand differ from a DNA strand?

Accepted Answer

A)  It contains ribose instead of deoxyribose 
B)  It is single-stranded 
C)  It contains uracil in place of thymine 
D)  All of the answers are correct 
A)  It contains ribose instead of deoxyribose 
B)  It is single-stranded 
C)  It contains uracil in place of thymine 
D)  All of the answers are correct

Question 13

The fact that the helixes of the DNA strand are arranged it opposite directions gives DNA its characteristics.

Accepted Answer

A)  Antiparallel 
B)  Complementary 
C)  Redundant 
D)  Water-soluble 
A)  Antiparallel 
B)  Complementary 
C)  Redundant 
D)  Water-soluble

Question 14

Avery used the enzyme to remove the proteins from the cell extracts.

Accepted Answer

A)  protease 
B)  DNase 
C)  RNase 
D)  All of the answers are correct 
A)  protease 
B)  DNase 
C)  RNase 
D)  All of the answers are correct

Question 15

The helical shape of the DNA contains major and minor grooves, which assist in the regulating of
gene expression.

Accepted Answer

A) True 
 B)False

Question 16

The fact that the type IIR and IIIS strains of Streptococcus pneumoniae that Griffith worked with possessed small differences in capsule structure satisfies which of the following criteria for genetic material?

Accepted Answer

A)  Transmission 
B)  Replication 
C)  Information 
D)  Variation 
A)  Transmission 
B)  Replication 
C)  Information 
D)  Variation

Question 17

All living organisms use DNA as the genetic material.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is NOT one of the criteria that all genetic material must meet?

Accepted Answer

A)  It must contain the information necessary to construct the entire organism. 
B)  It must be passed from parent to offspring. 
C)  It must be able to be copied. 
D)  It must have a limited amount of variation. 
A)  It must contain the information necessary to construct the entire organism. 
B)  It must be passed from parent to offspring. 
C)  It must be able to be copied. 
D)  It must have a limited amount of variation.

Question 19

One strand of DNA is 5' - AGGCCTTA - 3'. What is the opposite strand?

Accepted Answer

A)  5'-AGGCCTTA-3' 
B)  5'-TCCGGAAT-3' 
C)  3'-AGGCCTTA-5' 
D)  3'-TCCGGAAT-5' 
A)  5'-AGGCCTTA-3' 
B)  5'-TCCGGAAT-3' 
C)  3'-AGGCCTTA-5' 
D)  3'-TCCGGAAT-5'

Question 20

Which of the following correctly depicts the directionality of the DNA molecule?

Accepted Answer

A)  Right to left 
B)  Top to bottom 
C)  5' to 3' 
D)  3' to 5' 
E)  All DNA molecules are different in their directionality 
A)  Right to left 
B)  Top to bottom 
C)  5' to 3' 
D)  3' to 5' 
E)  All DNA molecules are different in their directionality

Exam 9: Molecular Structure of Dna and Rna

According to Chargaff's rule, if the DNA of a species contains 20% adenine, what percent of guanine will it contain?

Which of the following is not found in DNA?

The pyrimidine bases are .

A nucleoside consists of only a five-carbon sugar and a phosphate group.

All nucleotides contain which of the following?

A DNA strand can be described as antiparallel but uncomplementary.

The purine bases are .

The building blocks of DNA are called .

Tobacco mosaic virus (TMV) uses DNA as its genetic material.

The backbone of the DNA molecule is formed by .

DNA is recognized as a left-handed molecule. FALSE

How does a RNA strand differ from a DNA strand?

The fact that the helixes of the DNA strand are arranged it opposite directions gives DNA its characteristics.

Avery used the enzyme to remove the proteins from the cell extracts.

The helical shape of the DNA contains major and minor grooves, which assist in the regulating of gene expression.

The fact that the type IIR and IIIS strains of Streptococcus pneumoniae that Griffith worked with possessed small differences in capsule structure satisfies which of the following criteria for genetic material?

All living organisms use DNA as the genetic material.

Which of the following is NOT one of the criteria that all genetic material must meet?

One strand of DNA is 5' - AGGCCTTA - 3'. What is the opposite strand?

Which of the following correctly depicts the directionality of the DNA molecule?

Overview of Genetics

Mendelian Inheritance

Reproduction and Chromosome Transmission

Extensions of Mendelian Inheritance

Non-Mendelian Inheritance

Genetic Linkage and Mapping in Eukaryotes

Genetic Transfer and Mapping in Bacteria and

Variation in Chromosome Structure and Number

Chromosome Organization and Molecular Structure

Dna Replication

Gene Transcription and Rna Modification

Translation of Mrna

Gene Regulation in Bacteria and Bacteriophages

Gene Regulation in Eukaryotes

Gene Mutation and Dna Repair

Recombination and Transposition at the Molecular

Recombinant Dna Technology

Biotechnology

Genomics I: Analysis of Dna

Genomics II: Functional Genomics, Proteomics, and

Medical Genetics and Cancer

Developmental Genetics

Population Genetics

Quantitative Genetics

Evolutionary Genetics

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