Question 1

Rosalind Franklin did not share in the Nobel Prize for the discovery of the structure of DNA because _____.

Accepted Answer

A)  she was a woman 
B)  her contributions were minimal 
C)  she was not liked by James Watson 
D)  her ideas were stolen by Maurice Wilkins 
E)  she died of cancer before the award was given 
A)  she was a woman 
B)  her contributions were minimal 
C)  she was not liked by James Watson 
D)  her ideas were stolen by Maurice Wilkins 
E)  she died of cancer before the award was given

Question 2

In DNA replication, a primer is _____.​

Accepted Answer

A)  ​what the original DNA strands are called 
B)  ​an enzyme that breaks the hydrogen bonds between base pairs 
C)  ​a short piece of nucleic acid that serves as an attachment point for DNA polymerase 
D)  ​a molecule that provides the energy for nucleotide attachments 
E)  ​a regulatory protein that turns on the gene that starts DNA replication 
A)  ​what the original DNA strands are called 
B)  ​an enzyme that breaks the hydrogen bonds between base pairs 
C)  ​a short piece of nucleic acid that serves as an attachment point for DNA polymerase 
D)  ​a molecule that provides the energy for nucleotide attachments 
E)  ​a regulatory protein that turns on the gene that starts DNA replication

Question 3

A diploid organism contains _____.​

Accepted Answer

A)  ​several copies of the same chromosomes 
B)  only autosomes 
C)  ​one copy of each chromosome 
D)  ​chromosomes of equal size 
E)  ​two of each type of chromosome 
A)  ​several copies of the same chromosomes 
B)  only autosomes 
C)  ​one copy of each chromosome 
D)  ​chromosomes of equal size 
E)  ​two of each type of chromosome

Question 4

Why did most scientists assume that the bases of DNA should be on the outside of the helix?

Accepted Answer

A)  The bases were easily digested by DNA cutting enzymes. 
B)  The hydrogen bonding between sugar and phosphate would form a helix as well. 
C)  The bases needed to be accessible for replication. 
D)  A single-stranded DNA molecule would not be able to support the bases on the interior. 
E)  The bases were hydrophobic. 
A)  The bases were easily digested by DNA cutting enzymes. 
B)  The hydrogen bonding between sugar and phosphate would form a helix as well. 
C)  The bases needed to be accessible for replication. 
D)  A single-stranded DNA molecule would not be able to support the bases on the interior. 
E)  The bases were hydrophobic.

Question 5

If an error is made during replication that is not caught by DNA polymerase, the most likely is that _____.​

Accepted Answer

A)  ​both strands of DNA will be mutated 
B)  ​only the daughter strand will be mutated 
C)  ​a mutation that causes cancer will occur 
D)  ​DNA ligase will repair the mistake before a mutation occurs 
E)  ​DNA replication will stall indefinitely 
A)  ​both strands of DNA will be mutated 
B)  ​only the daughter strand will be mutated 
C)  ​a mutation that causes cancer will occur 
D)  ​DNA ligase will repair the mistake before a mutation occurs 
E)  ​DNA replication will stall indefinitely

Question 6

In animal cells, ____ is/are usually a one-way path.​

Accepted Answer

A)  ​replication 
B)  ​translation 
C)  ​transcription 
D)  ​differentiation 
E)  ​replication and translation 
A)  ​replication 
B)  ​translation 
C)  ​transcription 
D)  ​differentiation 
E)  ​replication and translation

Question 7

Which base pairs with adenine in a DNA molecule?​

Accepted Answer

A)  ​adenosine 
B)  ​cytosine 
C)  ​​thymine 
D)  ​guanine 
E)  ​uracil 
A)  ​adenosine 
B)  ​cytosine 
C)  ​​thymine 
D)  ​guanine 
E)  ​uracil

Question 8

From DNA X-ray diffraction data, it was determined that _____.

Accepted Answer

A)  the amount of adenine equaled the amount of thymine 
B)  different species have different proportions of adenine and guanine 
C)  nitrogen-containing bases were arranged on the outside of the double helix structure 
D)  the shape of the molecule could be a double helix 
E)  the backbone of the double helix was held together by hydrogen bonds 
A)  the amount of adenine equaled the amount of thymine 
B)  different species have different proportions of adenine and guanine 
C)  nitrogen-containing bases were arranged on the outside of the double helix structure 
D)  the shape of the molecule could be a double helix 
E)  the backbone of the double helix was held together by hydrogen bonds

Question 9

In some species, the sex of the future individual is determined by environmental conditions and not by sex chromosomes. Which species determines its sex by temperature?​

Accepted Answer

A)  ​birds 
B)  ​fruit flies 
C)  ​frogs 
D)  ​rabbits 
E)  ​zebras 
A)  ​birds 
B)  ​fruit flies 
C)  ​frogs 
D)  ​rabbits 
E)  ​zebras

Question 10

Rosalind Franklin's research contribution was essential in _____.

Accepted Answer

A)  establishing the single-stranded nature of DNA 
B)  establishing the principle of base pairing 
C)  establishing most of the principal structural features of DNA 
D)  sequencing DNA molecules 
E)  determining the bonding energy of DNA molecules 
A)  establishing the single-stranded nature of DNA 
B)  establishing the principle of base pairing 
C)  establishing most of the principal structural features of DNA 
D)  sequencing DNA molecules 
E)  determining the bonding energy of DNA molecules

Question 11

Matching
Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once.
-along with Watson and Crick, received the Nobel Prize for his contribution to the discovery of DNA's structure

Accepted Answer

A) Chargaff 
B) Franklin 
C) Watson and Crick 
D) Wilkins 
E) Hershey and Chase
F)Miescher 
A) Chargaff 
B) Franklin 
C) Watson and Crick 
D) Wilkins 
E) Hershey and Chase
F)Miescher

Question 12

How does X-ray crystallography provide details about molecular structure?

Accepted Answer

A)  Only DNA molecules scatter X-rays; therefore, this helped to prove that DNA was the genetic material in cells. 
B)  X-rays are reflected by some atoms and absorbed by others, thereby giving clues to molecule structure. 
C)  X-rays are scattered by atoms in a specific pattern, from which molecular size, shape, and spacing of repeating elements can be calculated. 
D)  This technique captures photographs of magnified molecules. 
E)  X-rays can be used to isolate DNA molecules from living organisms. 
A)  Only DNA molecules scatter X-rays; therefore, this helped to prove that DNA was the genetic material in cells. 
B)  X-rays are reflected by some atoms and absorbed by others, thereby giving clues to molecule structure. 
C)  X-rays are scattered by atoms in a specific pattern, from which molecular size, shape, and spacing of repeating elements can be calculated. 
D)  This technique captures photographs of magnified molecules. 
E)  X-rays can be used to isolate DNA molecules from living organisms.

Question 13

In a given strand of DNA, complementary bases are connected to each other by _____.​

Accepted Answer

A)  ​ionic bonds 
B)  ​polar covalent bonds 
C)  ​hydrogen bonds 
D)  ​peptide bonds 
E)  ​nonpolar covalent bonds 
A)  ​ionic bonds 
B)  ​polar covalent bonds 
C)  ​hydrogen bonds 
D)  ​peptide bonds 
E)  ​nonpolar covalent bonds

Question 14

Trakr, the Ground Zero hero dog, was cloned in the hope that _____.

Accepted Answer

A)  his clones would be adopted as pets 
B)  his clones would be better search and rescue dogs as he was 
C)  he would be the world's first cloned mammal 
D)  his clones would be just as good search and rescue dogs as he was 
E)  he would be brought back to life 
A)  his clones would be adopted as pets 
B)  his clones would be better search and rescue dogs as he was 
C)  he would be the world's first cloned mammal 
D)  his clones would be just as good search and rescue dogs as he was 
E)  he would be brought back to life

Question 15

If a DNA molecule was a spiral staircase, what would the steps of the staircase be?​

Accepted Answer

A)  ​covalent bonds 
B)  ​deoxyribose 
C)  ​base pairs 
D)  ​hydrogen bonds 
E)  ​phosphate 
A)  ​covalent bonds 
B)  ​deoxyribose 
C)  ​base pairs 
D)  ​hydrogen bonds 
E)  ​phosphate

Question 16

The two types of bonding found in a DNA molecule are _____.​

Accepted Answer

A)  ​ionic and covalent 
B)  ​covalent and peptide 
C)  ​ionic and hydrogen 
D)  ​peptide and hydrogen 
E)  ​covalent and hydrogen 
A)  ​ionic and covalent 
B)  ​covalent and peptide 
C)  ​ionic and hydrogen 
D)  ​peptide and hydrogen 
E)  ​covalent and hydrogen

Question 17

If the DNA from a single cell were stretched end to end, how long would it be?​

Accepted Answer

A)  ​2 nanometers 
B)  ​2 micrometers 
C)  ​2 millimeters 
D)  ​2 centimeters 
E)  ​2 meters 
A)  ​2 nanometers 
B)  ​2 micrometers 
C)  ​2 millimeters 
D)  ​2 centimeters 
E)  ​2 meters

Question 18

The original published articles describing the structure of DNA were authored by _____ and _____.​

Accepted Answer

A)  ​Crick; Franklin 
B)  ​Watson and Crick; Franklin 
C)  ​Wilkins; Franklin 
D)  ​Wilkins; Watson and Crick 
E)  ​Watson; Crick 
A)  ​Crick; Franklin 
B)  ​Watson and Crick; Franklin 
C)  ​Wilkins; Franklin 
D)  ​Wilkins; Watson and Crick 
E)  ​Watson; Crick

Question 19

Matching
Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once.
-this researcher's work suggested that DNA was double helix

Accepted Answer

A) Chargaff 
B) Franklin 
C) Watson and Crick 
D) Wilkins 
E) Hershey and Chase
F)Miescher 
A) Chargaff 
B) Franklin 
C) Watson and Crick 
D) Wilkins 
E) Hershey and Chase
F)Miescher

Exam 7: Dna Structure and Function

Rosalind Franklin did not share in the Nobel Prize for the discovery of the structure of DNA because _____.

In DNA replication, a primer is _____.​

A diploid organism contains _____.​

Why did most scientists assume that the bases of DNA should be on the outside of the helix?

If an error is made during replication that is not caught by DNA polymerase, the most likely is that _____.​

In animal cells, ____ is/are usually a one-way path.​

Which base pairs with adenine in a DNA molecule?​

From DNA X-ray diffraction data, it was determined that _____.

In some species, the sex of the future individual is determined by environmental conditions and not by sex chromosomes. Which species determines its sex by temperature?​

Rosalind Franklin's research contribution was essential in _____.

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -along with Watson and Crick, received the Nobel Prize for his contribution to the discovery of DNA's structure

How does X-ray crystallography provide details about molecular structure?

In a given strand of DNA, complementary bases are connected to each other by _____.​

Trakr, the Ground Zero hero dog, was cloned in the hope that _____.

If a DNA molecule was a spiral staircase, what would the steps of the staircase be?​

The two types of bonding found in a DNA molecule are _____.​

If the DNA from a single cell were stretched end to end, how long would it be?​

The original published articles describing the structure of DNA were authored by _____ and _____.​

Matching Answer the following questions by matching each term with the most appropriate description. Some choices may be used more than once. -this researcher's work suggested that DNA was double helix

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Photosynthesis

Releasing Chemical Energy

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Prokaryotes, Protists, and Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Animal Reproduction and Development

Plant Form and Function

Life Cycles of Flowering Plants

Filters

In DNA replication, a primer is _____.

A diploid organism contains _____.

If an error is made during replication that is not caught by DNA polymerase, the most likely is that _____.

In animal cells, ____ is/are usually a one-way path.

Which base pairs with adenine in a DNA molecule?

In some species, the sex of the future individual is determined by environmental conditions and not by sex chromosomes. Which species determines its sex by temperature?

In a given strand of DNA, complementary bases are connected to each other by _____.

If a DNA molecule was a spiral staircase, what would the steps of the staircase be?

The two types of bonding found in a DNA molecule are _____.

If the DNA from a single cell were stretched end to end, how long would it be?

The original published articles describing the structure of DNA were authored by _ and _.