Question 1

Scientists use _______ to produce many copies of small DNA fragments, such as those obtained at crime scenes or from fossils.

Accepted Answer

A) transcription 
B) polymerase chain reactions 
C) nondisjunction 
D) trisomies 
E) random assortment of alleles 
A) transcription 
B) polymerase chain reactions 
C) nondisjunction 
D) trisomies 
E) random assortment of alleles

Question 2

Describe DNA replications and chromosomes.

Accepted Answer

DNA replication is the process by which

Question 3

Explain the history and functions of cells.

Accepted Answer

The history of cells dates back to the 1

Question 4

Enzymes

Accepted Answer

A) are amino acids. 
B) are major constituents of body tissues. 
C) initiate and enhance chemical reactions in the body. 
D) are also called zygotes. 
E) have no cellular function. 
A) are amino acids. 
B) are major constituents of body tissues. 
C) initiate and enhance chemical reactions in the body. 
D) are also called zygotes. 
E) have no cellular function.

Question 5

Which of the following statements is FALSE regarding the process of meiosis?

Accepted Answer

A) Meiosis produces gametes. 
B) Meiosis produces daughter cells with half the original amount of DNA found in the original cell. 
C) There are two cell divisions. 
D) Meiosis produces daughter cells with the same amount of DNA found in the original cell. 
E) Homologous chromosomes exchange genetic information. 
A) Meiosis produces gametes. 
B) Meiosis produces daughter cells with half the original amount of DNA found in the original cell. 
C) There are two cell divisions. 
D) Meiosis produces daughter cells with the same amount of DNA found in the original cell. 
E) Homologous chromosomes exchange genetic information.

Question 6

What are mRNA triplets called?

Accepted Answer

A) Exons 
B) Introns 
C) Codons 
D) Genomes 
E) Mutations 
A) Exons 
B) Introns 
C) Codons 
D) Genomes 
E) Mutations

Question 7

The substitution of one DNA base for another is a (an)

Accepted Answer

A) point mutation. 
B) genome. 
C) trisomy. 
D) allele. 
E) locus. 
A) point mutation. 
B) genome. 
C) trisomy. 
D) allele. 
E) locus.

Question 8

Karyotype analysis is often used in the prenatal diagnosis of chromosomal abnormalities.

Accepted Answer

A) True 
 B)False

Question 9

In protein synthesis, transcription is the process of

Accepted Answer

A) manufacturing tRNA. 
B) assembling polypeptide chains. 
C) forming mRNA molecules. 
D) producing amino acids. 
E) manufacturing ribosomal RNA. 
A) manufacturing tRNA. 
B) assembling polypeptide chains. 
C) forming mRNA molecules. 
D) producing amino acids. 
E) manufacturing ribosomal RNA.

Question 10

There are two basic types of chromosomes, autosomes and

Accepted Answer

A) eukaryotes. 
B) codons. 
C) autosomes. 
D) centromere. 
E) ribosomes. 
A) eukaryotes. 
B) codons. 
C) autosomes. 
D) centromere. 
E) ribosomes.

Question 11

A segment of DNA that specifies the sequence of amino acids in a particular protein is called a(n)

Accepted Answer

A) gene. 
B) codon. 
C) polypeptide. 
D) amino acid. 
E) helix. 
A) gene. 
B) codon. 
C) polypeptide. 
D) amino acid. 
E) helix.

Question 12

Which of the following statements concerning messenger RNA is FALSE?

Accepted Answer

A) It contains the base uracil instead of thymine. 
B) It is single-stranded. 
C) It contains the same sugar that is found in DNA. 
D) It is able to pass through the nuclear membrane. 
E) It is involved in the synthesis of proteins. 
A) It contains the base uracil instead of thymine. 
B) It is single-stranded. 
C) It contains the same sugar that is found in DNA. 
D) It is able to pass through the nuclear membrane. 
E) It is involved in the synthesis of proteins.

Question 13

Explain protein synthesis and its relation and importance.

Accepted Answer

Protein synthesis is the process by whic

Question 14

Using your knowledge of the principles of natural selection, explain why genetic variation is central to the evolutionary process.

Accepted Answer

Genetic variation is central to the evol

Question 15

Trisomy 21

Accepted Answer

A) occurs  only in  infants born to women who got pregnant at 45 years or older. 
B) is caused by nondisjunction. 
C) is caused by having three X chromosomes. 
D) is usually lethal. 
E) occurs only among nonhuman primates. 
A) occurs  only in  infants born to women who got pregnant at 45 years or older. 
B) is caused by nondisjunction. 
C) is caused by having three X chromosomes. 
D) is usually lethal. 
E) occurs only among nonhuman primates.

Question 16

Which severe inherited hemoglobin disorder cases red blood cells to collapse when deprived of oxygen?

Accepted Answer

A) Cystic fibrosis 
B) Hemophilia 
C) Diabetes 
D) Tay-sachs disease 
E) Sickle-cell anemia 
A) Cystic fibrosis 
B) Hemophilia 
C) Diabetes 
D) Tay-sachs disease 
E) Sickle-cell anemia

Question 17

Which is NOT true about recombination?

Accepted Answer

A) It is the exchange of genetic material between paired chromosomes. 
B) It is also called crossing over. 
C) It occurs during mitosis. 
D) Its pairing ensures each new daughter cell receives only one of each pair. 
E) It occurs in gamete formation. 
A) It is the exchange of genetic material between paired chromosomes. 
B) It is also called crossing over. 
C) It occurs during mitosis. 
D) Its pairing ensures each new daughter cell receives only one of each pair. 
E) It occurs in gamete formation.

Question 18

Nondisjunction can occur in the autosomes but never occurs in the sex chromosomes.

Accepted Answer

A) True 
 B)False

Question 19

Explain the function of regulatory genes, including homeobox genes.

Accepted Answer

Regulatory genes are responsible for con

Question 20

The X and Y chromosomes are called

Accepted Answer

A) autosomes. 
B) gametes. 
C) centromeres. 
D) sex chromosomes. 
E) karyotypes. 
A) autosomes. 
B) gametes. 
C) centromeres. 
D) sex chromosomes. 
E) karyotypes.

Scientists use _______ to produce many copies of small DNA fragments, such as those obtained at crime scenes or from fossils.

Describe DNA replications and chromosomes.

Explain the history and functions of cells.

Enzymes

Which of the following statements is FALSE regarding the process of meiosis?

What are mRNA triplets called?

The substitution of one DNA base for another is a (an)

Karyotype analysis is often used in the prenatal diagnosis of chromosomal abnormalities.

In protein synthesis, transcription is the process of

There are two basic types of chromosomes, autosomes and

A segment of DNA that specifies the sequence of amino acids in a particular protein is called a(n)

Which of the following statements concerning messenger RNA is FALSE?

Explain protein synthesis and its relation and importance.

Using your knowledge of the principles of natural selection, explain why genetic variation is central to the evolutionary process.

Trisomy 21

Which severe inherited hemoglobin disorder cases red blood cells to collapse when deprived of oxygen?

Which is NOT true about recombination?

Nondisjunction can occur in the autosomes but never occurs in the sex chromosomes.

Explain the function of regulatory genes, including homeobox genes.

The X and Y chromosomes are called

Introduction to Physical Anthropology

The Development of Evolutionary Theory

Heredity and Evolution

Macroevolution: Processes of Vertebrate and Mammalian Evolution

Survey of the Living Primates

Primate Behavior

Overview of the Fossil Primates

Paleoanthropology: Reconstructing Early Hominin Behavior and Ecology

Hominin Origins in Africa

The First Dispersal of the Genus Homo: Homo Erectus and Contemporaries

Premodern Humans

The Origin and Dispersal of Modern Humans

Modern Human Biology: Patterns of Variation

Modern Human Biology: Patterns of Adaptation

Legacies of Human Evolutionary History: Effects on the Human Life Course

The Human Disconnection

Filters

Exam 3: The Biological Basis of Life

Scientists use _______ to produce many copies of small DNA fragments, such as those obtained at crime scenes or from fossils.

Describe DNA replications and chromosomes.

Explain the history and functions of cells.

Enzymes

Which of the following statements is FALSE regarding the process of meiosis?

What are mRNA triplets called?

The substitution of one DNA base for another is a (an)

Karyotype analysis is often used in the prenatal diagnosis of chromosomal abnormalities.

In protein synthesis, transcription is the process of

There are two basic types of chromosomes, autosomes and

A segment of DNA that specifies the sequence of amino acids in a particular protein is called a(n)

Which of the following statements concerning messenger RNA is FALSE?

Explain protein synthesis and its relation and importance.

Using your knowledge of the principles of natural selection, explain why genetic variation is central to the evolutionary process.

Trisomy 21

Which severe inherited hemoglobin disorder cases red blood cells to collapse when deprived of oxygen?

Which is NOT true about recombination?

Nondisjunction can occur in the autosomes but never occurs in the sex chromosomes.

Explain the function of regulatory genes, including homeobox genes.

The X and Y chromosomes are called

Introduction to Physical Anthropology

The Development of Evolutionary Theory

Heredity and Evolution

Macroevolution: Processes of Vertebrate and Mammalian Evolution

Survey of the Living Primates

Primate Behavior

Overview of the Fossil Primates

Paleoanthropology: Reconstructing Early Hominin Behavior and Ecology

Hominin Origins in Africa

The First Dispersal of the Genus Homo: Homo Erectus and Contemporaries

Premodern Humans

The Origin and Dispersal of Modern Humans

Modern Human Biology: Patterns of Variation

Modern Human Biology: Patterns of Adaptation

Legacies of Human Evolutionary History: Effects on the Human Life Course

The Human Disconnection

Filters