Question 1

What is a DNA profile?

Accepted Answer

A)  The sequence of the coding region within a DNA sample 
B)  A unique banding pattern seen on gel electrophoresis corresponding to the non-coding regions of an individual's DNA 
C)  A unique banding pattern seen on gel electrophoresis corresponding to the coding regions of an individual's DNA 
D)  A banding pattern seen on gel electrophoresis,which is usually identical between parent and child 
E)  A technique used by forensic scientists that compares protein sequences among individuals in order to identify suspects 
A)  The sequence of the coding region within a DNA sample 
B)  A unique banding pattern seen on gel electrophoresis corresponding to the non-coding regions of an individual's DNA 
C)  A unique banding pattern seen on gel electrophoresis corresponding to the coding regions of an individual's DNA 
D)  A banding pattern seen on gel electrophoresis,which is usually identical between parent and child 
E)  A technique used by forensic scientists that compares protein sequences among individuals in order to identify suspects

Question 2

Which of the following shows the steps of PCR amplification in the correct order?

Accepted Answer

A)  extract DNA,add nucleotides,heat,add polymerase,cool 
B)  extract DNA,add polymerase,cycles of heating and cooling,add nucleotides 
C)  extract DNA,add polymerase,heat,add nucleotides,cool 
D)  extract DNA,heat,add nucleotides,cool,add polymerase,repeat 
E)  extract DNA,add nucleotides and polymerase,cycles of heating and cooling 
A)  extract DNA,add nucleotides,heat,add polymerase,cool 
B)  extract DNA,add polymerase,cycles of heating and cooling,add nucleotides 
C)  extract DNA,add polymerase,heat,add nucleotides,cool 
D)  extract DNA,heat,add nucleotides,cool,add polymerase,repeat 
E)  extract DNA,add nucleotides and polymerase,cycles of heating and cooling

Question 3

What are nucleotides?

Accepted Answer

A)  enzymes that copy DNA 
B)  molecules that make up the information contained in DNA 
C)  molecules that consist of a sugar,a protein,and a base 
D)  molecules around which chromosomes coil 
E)  enzymes that split DNA apart so that the DNA can be copied 
A)  enzymes that copy DNA 
B)  molecules that make up the information contained in DNA 
C)  molecules that consist of a sugar,a protein,and a base 
D)  molecules around which chromosomes coil 
E)  enzymes that split DNA apart so that the DNA can be copied

Question 4

What is the significance of the "23rd pair" of chromosomes in humans?

Accepted Answer

A)  It is inherited only from the mother. 
B)  It is inherited only from the father. 
C)  It doesn't exist;there are only 22 pairs. 
D)  It doesn't contain thymine. 
E)  It determines a person's sex. 
A)  It is inherited only from the mother. 
B)  It is inherited only from the father. 
C)  It doesn't exist;there are only 22 pairs. 
D)  It doesn't contain thymine. 
E)  It determines a person's sex.

Question 5

The process of DNA replication requires

Accepted Answer

A)  breaking of hydrogen bonds. 
B)  unwinding of the DNA. 
C)  enzymes. 
D)  nucleotides. 
E)  All of the above. 
A)  breaking of hydrogen bonds. 
B)  unwinding of the DNA. 
C)  enzymes. 
D)  nucleotides. 
E)  All of the above.

Question 6

Which of the following is not a nucleotide found in DNA?

Accepted Answer

A)  adenine (
A)  
B)  thymine (T) 
C)  cytosine (
C)  
D)  guanine (G) 
E)  uracil (U) 
A)  adenine (
A)  
B)  thymine (T) 
C)  cytosine (
C)  
D)  guanine (G) 
E)  uracil (U)

Question 7

Which is NOT true of gel electrophoresis?

Accepted Answer

A)  Smaller DNA fragments remain together and cannot be separated. 
B)  PCR fragments can be separated using an electric current. 
C)  For any one STR region,a person may have either one or two bands. 
D)  PCR fragments of the same length travel through the gel at the same rate. 
E)  Large fragments stay closer to the loading wells. 
A)  Smaller DNA fragments remain together and cannot be separated. 
B)  PCR fragments can be separated using an electric current. 
C)  For any one STR region,a person may have either one or two bands. 
D)  PCR fragments of the same length travel through the gel at the same rate. 
E)  Large fragments stay closer to the loading wells.

Question 8

DNA replication results in __________ copies of a cell's genome.

Accepted Answer

A)  two similar 
B)  two identical 
C)  four similar 
D)  four identical 
E)  None of the above. 
A)  two similar 
B)  two identical 
C)  four similar 
D)  four identical 
E)  None of the above.

Question 9

What is a genome?

Accepted Answer

A)  the complete set of genetic material encoded within the DNA of an organism 
B)  the total number of base pairs within a DNA sequence 
C)  a short sequence of DNA that codes for a particular characteristic 
D)  the total amount of RNA within an organism 
E)  strands of DNA wound around proteins;humans have 23 pairs 
A)  the complete set of genetic material encoded within the DNA of an organism 
B)  the total number of base pairs within a DNA sequence 
C)  a short sequence of DNA that codes for a particular characteristic 
D)  the total amount of RNA within an organism 
E)  strands of DNA wound around proteins;humans have 23 pairs

Question 10

If the sequence of one strand of DNA is AGTCTAGC,what is the sequence of the complementary strand?

Accepted Answer

A)  AGTCTAGC 
B)  CGATCTGA 
C)  TCAGATCG 
D)  GTCGACGC 
E)  GCTAGACT 
A)  AGTCTAGC 
B)  CGATCTGA 
C)  TCAGATCG 
D)  GTCGACGC 
E)  GCTAGACT

Question 11

What is DNA polymerase?

Accepted Answer

A)  an enzyme that breaks DNA down into fragments 
B)  an enzyme that deletes specific regions of DNA 
C)  an enzyme involved in DNA replication that binds to DNA and facilitates the formation of a new strand of DNA 
D)  an enzyme that allows the chromosomes to coil around proteins so that the chromosomes can fit into the nucleus 
E)  an enzyme that removes the sugar molecule from a nucleotide so that the phosphate groups can be linked together 
A)  an enzyme that breaks DNA down into fragments 
B)  an enzyme that deletes specific regions of DNA 
C)  an enzyme involved in DNA replication that binds to DNA and facilitates the formation of a new strand of DNA 
D)  an enzyme that allows the chromosomes to coil around proteins so that the chromosomes can fit into the nucleus 
E)  an enzyme that removes the sugar molecule from a nucleotide so that the phosphate groups can be linked together

Question 12

When one DNA molecule is duplicated,the resulting two DNA molecules contain

Accepted Answer

A)  one new and one old strand in each. 
B)  two new strands in one and two old strands in the other. 
C)  four new strands in each. 
D)  four old strands in each. 
E)  four new strands in one and four old strands in the other. 
A)  one new and one old strand in each. 
B)  two new strands in one and two old strands in the other. 
C)  four new strands in each. 
D)  four old strands in each. 
E)  four new strands in one and four old strands in the other.

Question 13

Choose the statement(s)that correctly describe the organization of DNA.______ is/are made of ______,and ______ contain(s)many ______.

Accepted Answer

A)  DNA;chromosomes;chromosomes;genes 
B)  Chromosomes;DNA;chromosomes;genes 
C)  DNA;genes;genes;chromosomes 
D)  Genes;DNA;chromosomes;genes 
E)  Both B and D 
A)  DNA;chromosomes;chromosomes;genes 
B)  Chromosomes;DNA;chromosomes;genes 
C)  DNA;genes;genes;chromosomes 
D)  Genes;DNA;chromosomes;genes 
E)  Both B and D

Question 14

The _____ chromosomes in a typical human cell are found in the_____.

Accepted Answer

A)  46;cytoplasm 
B)  23;nucleus 
C)  24;cytoplasm 
D)  46;nucleus 
E)  22;nucleus 
A)  46;cytoplasm 
B)  23;nucleus 
C)  24;cytoplasm 
D)  46;nucleus 
E)  22;nucleus

Question 15

What is the significance of CODIS?

Accepted Answer

A)  CODIS aids in setting free wrongfully accused people. 
B)  CODIS contains more than 4.5 million profiles from criminals in 50 states. 
C)  Each DNA profile in CODIS contains 15 specific STRs. 
D)  CODIS can help identify suspects when other methods cannot. 
E)  All of the above. 
A)  CODIS aids in setting free wrongfully accused people. 
B)  CODIS contains more than 4.5 million profiles from criminals in 50 states. 
C)  Each DNA profile in CODIS contains 15 specific STRs. 
D)  CODIS can help identify suspects when other methods cannot. 
E)  All of the above.

Question 16

You start a PCR process with two copies of a DNA molecule.After three cycles of PCR,how many copies of the DNA will be present?

Accepted Answer

A)  5 
B)  6 
C)  8 
D)  16 
E)  27 
A)  5 
B)  6 
C)  8 
D)  16 
E)  27

Question 17

The entire sequence of DNA in a cell used for DNA profiling is called the _____.

Accepted Answer

A)  chromosome 
B)  X chromosome 
C)  genome 
D)  Y chromosome 
E)  nucleus 
A)  chromosome 
B)  X chromosome 
C)  genome 
D)  Y chromosome 
E)  nucleus

Question 18

Each chromosome contains

Accepted Answer

A)  DNA only. 
B)  proteins only. 
C)  DNA and proteins. 
D)  the same number of genes and STRs. 
E)  the entire genome of a cell. 
A)  DNA only. 
B)  proteins only. 
C)  DNA and proteins. 
D)  the same number of genes and STRs. 
E)  the entire genome of a cell.

Question 19

Which of the following statements is least likely to be true?

Accepted Answer

A)  A father and son share some identical sequences of DNA. 
B)  A mother and daughter share some identical sequences of DNA. 
C)  A father and daughter share some identical sequences of DNA. 
D)  The DNA that codes for human hair is more likely to be similar between genetic siblings than between unrelated individuals. 
E)  A mother and father share more identical sequences with each other than they do with their children. 
A)  A father and son share some identical sequences of DNA. 
B)  A mother and daughter share some identical sequences of DNA. 
C)  A father and daughter share some identical sequences of DNA. 
D)  The DNA that codes for human hair is more likely to be similar between genetic siblings than between unrelated individuals. 
E)  A mother and father share more identical sequences with each other than they do with their children.

Question 20

Which of the following is an STR?

Accepted Answer

A)  AGATAGATAGAT 
B)  AGATTAGAAGAT 
C)  AGATCAGATAGA 
D)  AGAUAGAUAGAU 
E)  Serine-lysine-serine-lysine 
A)  AGATAGATAGAT 
B)  AGATTAGAAGAT 
C)  AGATCAGATAGA 
D)  AGAUAGAUAGAU 
E)  Serine-lysine-serine-lysine

Exam 7: DNA Structure and Replication

What is a DNA profile?

Which of the following shows the steps of PCR amplification in the correct order?

What are nucleotides?

What is the significance of the "23rd pair" of chromosomes in humans?

The process of DNA replication requires

Which of the following is not a nucleotide found in DNA?

Which is NOT true of gel electrophoresis?

DNA replication results in __________ copies of a cell's genome.

What is a genome?

If the sequence of one strand of DNA is AGTCTAGC,what is the sequence of the complementary strand?

What is DNA polymerase?

When one DNA molecule is duplicated,the resulting two DNA molecules contain

Choose the statement(s)that correctly describe the organization of DNA.______ is/are made of ______,and ______ contain(s)many ______.

The _____ chromosomes in a typical human cell are found in the_____.

What is the significance of CODIS?

You start a PCR process with two copies of a DNA molecule.After three cycles of PCR,how many copies of the DNA will be present?

The entire sequence of DNA in a cell used for DNA profiling is called the _____.

Each chromosome contains

Which of the following statements is least likely to be true?

Which of the following is an STR?

Process of Science

Chemistry of Life

Cell Structure and Function

Nutrition, Enzymes, Metabolism

Energy and Photosynthesis

Dietary Energy and Cellular Respiration

Genes to Proteins

Cell Cycle and Cell Differentiation

Mutations and Cancer

Simple Inheritance and Meiosis

Complex Inheritance

Natural Selection and Adaptation

Nonadaptive Evolution and Speciation

Evidence for Evolution

Life on Earth

Prokaryotic Diversity

Eukaryotic Diversity

Human Evolution

Population Ecology

Community Ecology

Ecosystem Ecology

Sustainability

Plant Growth and Reproduction

Plant Physiology

Overview of Physiology

Digestive System

Cardiovascular System

Respiratory System

Central Nervous System

Reproductive System

Immune System

A Range of Biology

Filters

Choose the statement(s)that correctly describe the organization of DNA. is/are made of ,and contain(s)many .

The _ chromosomes in a typical human cell are found in the_.