Question 1

The fact that the helixes of the DNA strand are arranged in 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 A

Question 2

What DNA form is most common in living organisms?

Accepted Answer

A) A DNA 
B) B DNA 
C) Z DNA 
D) Triplex DNA 
A) A DNA 
B) B DNA 
C) Z DNA 
D) Triplex DNA B

Question 3

What is one of the criteria that all genetic material must meet?

Accepted Answer

A) It does NOT contain the information necessary to construct the entire organism. 
B) It must be passed from offspring to parent. 
C) It must be able to be copied. 
D) It must have a limited amount of variation. 
A) It does NOT contain the information necessary to construct the entire organism. 
B) It must be passed from offspring to parent. 
C) It must be able to be copied. 
D) It must have a limited amount of variation. C

Question 4

A DNA strand can be described as antiparallel but uncomplementary.

Accepted Answer

A) True 
 B)False

Question 5

The individuals who determined that Griffith's transforming principle was DNA were __________.

Accepted Answer

A)  Hershey and Chase 
B)  Avery, Macleod, and McCarty 
C)  Watson and Crick 
D)  Creighton and McClintock 
A)  Hershey and Chase 
B)  Avery, Macleod, and McCarty 
C)  Watson and Crick 
D)  Creighton and McClintock

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

What is the directionality of the DNA molecule?

Accepted Answer

A) front to back 
B) top to bottom 
C) 5' to 3' 
D) 3' to 5' 
E)  all DNA molecules are different in their directionality 
A) front to back 
B) top to bottom 
C) 5' to 3' 
D) 3' to 5' 
E)  all DNA molecules are different in their directionality

Question 8

The individual(s) who used ball and stick models to identify the three-dimensional structure of proteins was _______.

Accepted Answer

A) Franklin 
B) Watson and Crick 
C) Hershey and Chase 
D) Pauling 
E) Chargaff 
A) Franklin 
B) Watson and Crick 
C) Hershey and Chase 
D) Pauling 
E) Chargaff

Question 9

What is a characteristic of T2 bacteriophage?

Accepted Answer

A) It does not require a host cell for replication 
B) The phage attaches to the cell wall of a target eukaryotic cell 
C) The phages injects its DNA into the host cell 
D) The new phages are formed outside the host cell 
A) It does not require a host cell for replication 
B) The phage attaches to the cell wall of a target eukaryotic cell 
C) The phages injects its DNA into the host cell 
D) The new phages are formed outside the host cell

Question 10

How many bases are necessary to complete three complete twists (1080 degrees) of a DNA helix?

Accepted Answer

A) 5 
B) 10 
C) 30 
D) 60 
A) 5 
B) 10 
C) 30 
D) 60

Question 11

An RNA strand with sequence 5'-GUACAAUGACUUAUGUAC-3' can potentially form which structure?

Accepted Answer

A) bulge loop 
B) internal loop 
C) multibranched junction 
D) stem-loop 
A) bulge loop 
B) internal loop 
C) multibranched junction 
D) stem-loop

Question 12

DNA can exist as a triple helix, although its function in biological systems is not well understood.

Accepted Answer

A) True 
 B)False

Question 13

In a double-helix DNA strand, the adenine on one strand forms a hydrogen bond with a(n) ____ on the other strand.

Accepted Answer

A)  adenine 
B)  guanine 
C)  thymine 
D)  cytosine 
A)  adenine 
B)  guanine 
C)  thymine 
D)  cytosine

Question 14

Which DNA molecule form is a left-handed?

Accepted Answer

A) A DNA 
B) B DNA 
C) Z DNA 
D) R DNA 
A) A DNA 
B) B DNA 
C) Z DNA 
D) R DNA

Question 15

The _______ was labeled using the radioisotope 32P in the Hershey-Chase experiments.

Accepted Answer

A)  RNA 
B)  DNA 
C)  protein 
D)  carbohydrates 
A)  RNA 
B)  DNA 
C)  protein 
D)  carbohydrates

Question 16

The fact that the type R and S 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

What is a component of a single nucleotide?

Accepted Answer

A) A phosphate group 
B) A six carbon sugar 
C) All five nitrogenous bases 
A) A phosphate group 
B) A six carbon sugar 
C) All five nitrogenous bases

Question 18

DNA is recognized as a left-handed molecule.

Accepted Answer

A) True 
 B)False

Question 19

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%

Question 20

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

Exam 9: Molecular Structure of DNA and RNA

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

What DNA form is most common in living organisms?

What is one of the criteria that all genetic material must meet?

A DNA strand can be described as antiparallel but uncomplementary.

The individuals who determined that Griffith's transforming principle was DNA were __________.

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

What is the directionality of the DNA molecule?

The individual(s) who used ball and stick models to identify the three-dimensional structure of proteins was _______.

What is a characteristic of T2 bacteriophage?

How many bases are necessary to complete three complete twists (1080 degrees) of a DNA helix?

An RNA strand with sequence 5'-GUACAAUGACUUAUGUAC-3' can potentially form which structure?

DNA can exist as a triple helix, although its function in biological systems is not well understood.

In a double-helix DNA strand, the adenine on one strand forms a hydrogen bond with a(n) ____ on the other strand.

Which DNA molecule form is a left-handed?

The _______ was labeled using the radioisotope 32P in the Hershey-Chase experiments.

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

What is a component of a single nucleotide?

DNA is recognized as a left-handed molecule.

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

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

Overview of Genetics

Mendelian Inheritance

Chromosome Transmission During Cell Division and Sexual Reproduction

Extensions of Mendelian Inheritance

Non-Mendelian Inheritance

Genetic Linkage and Mapping in Eukaryotes

Genetic Transfer and Mapping in Bacteria and Bacteriophages

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

Gene Regulation in Eukaryotes I: Transcriptional Regulation

Gene Regulation in Eukaryotes II: Epigenetics and Regulation at the RNA Level

Genetics of Viruses

Gene Mutation and Dna Repair

Recombination and Transposition at the Molecular Level

DNA Technologies

Biotechnology

Genomics I: Analysis of DNA

Genomics II: Functional Genomics, Proteomics, and Bioinformatics

Medical Genetics and Cancer

Developmental Genetics

Population Genetics

Quantitative Genetics

Evolutionary Genetics

Filters

The _______ was labeled using the radioisotope ³²P in the Hershey-Chase experiments.