Question 1

What technique supplied the data that led Watson and Crick to the double helical structure of DNA?

Accepted Answer

A) sucrose density centrifugation 
B) polyacrylamide gel electrophoresis 
C) X-ray diffraction/crystallography 
D) autoradiography 
E) ion exchange chromatography 
A) sucrose density centrifugation 
B) polyacrylamide gel electrophoresis 
C) X-ray diffraction/crystallography 
D) autoradiography 
E) ion exchange chromatography

Question 2

What was the original strain of fruit flies called?

Accepted Answer

A) wild ones 
B) originals 
C) wild type 
D) normal type 
E) dominant type 
A) wild ones 
B) originals 
C) wild type 
D) normal type 
E) dominant type

Question 3

What statement below explains the uniform width of the DNA molecule along its entire width?

Accepted Answer

A) A purine nitrogenous base always pairs with another purine nitrogenous base. 
B) A pyrimidine nitrogenous base always pairs with another pyrimidine nitrogenous base. 
C) A pyrimidine nitrogenous base always pairs with a purine nitrogenous base. 
D) Repulsion between phosphate groups keeps the strands a uniform distance apart. 
E) Attraction between phosphate groups keeps the strands a uniform distance apart. 
A) A purine nitrogenous base always pairs with another purine nitrogenous base. 
B) A pyrimidine nitrogenous base always pairs with another pyrimidine nitrogenous base. 
C) A pyrimidine nitrogenous base always pairs with a purine nitrogenous base. 
D) Repulsion between phosphate groups keeps the strands a uniform distance apart. 
E) Attraction between phosphate groups keeps the strands a uniform distance apart.

Question 4

The behavior of what cell constituent correlated perfectly with that of Mendel's genetic factors?

Accepted Answer

A) the mitochondria 
B) the endoplasmic reticulum 
C) the homologous pairs of chromosomes 
D) the homologous pairs of centrioles 
E) the nucleolus 
A) the mitochondria 
B) the endoplasmic reticulum 
C) the homologous pairs of chromosomes 
D) the homologous pairs of centrioles 
E) the nucleolus

Question 5

The nitrogenous base attaches to the ____-carbon of the nucleotide's sugar.

Accepted Answer

A) 1' 
B) 2' 
C) 3' 
D) 5' 
E) 1 
A) 1' 
B) 2' 
C) 3' 
D) 5' 
E) 1

Question 6

What word below refers to a pair of homologous chromosomes?

Accepted Answer

A) chromophores 
B) bivalent 
C) birefringence 
D) bilateral 
E) nucleolus 
A) chromophores 
B) bivalent 
C) birefringence 
D) bilateral 
E) nucleolus

Question 7

Which phrase below describes the structure of hemoglobin?

Accepted Answer

A) either an $\alpha$-globin or a $\beta$-globin chain 
B) an $\alpha$-globin and a $\beta$-globin chain 
C) two $\alpha$-globin and two $\beta$-globin chains 
D) three $\alpha$-globin chains and one $\beta$-globin chain 
E) four $\alpha$-globin or four $\beta$-globin chains 
A) either an $\alpha$-globin or a $\beta$-globin chain 
B) an $\alpha$-globin and a $\beta$-globin chain 
C) two $\alpha$-globin and two $\beta$-globin chains 
D) three $\alpha$-globin chains and one $\beta$-globin chain 
E) four $\alpha$-globin or four $\beta$-globin chains

Question 8

What is the major abnormality seen in the daughter cells of an egg that has been fertilized by more than one sperm?

Accepted Answer

A) The daughter cells have more cilia. 
B) The daughter cells are smaller. 
C) The daughter cells have variable numbers of chromosomes. 
D) The daughter cells enter meiosis unexpectedly. 
E) The daughter cells swell to three times their normal size. 
A) The daughter cells have more cilia. 
B) The daughter cells are smaller. 
C) The daughter cells have variable numbers of chromosomes. 
D) The daughter cells enter meiosis unexpectedly. 
E) The daughter cells swell to three times their normal size.

Question 9

Different versions of a gene are called _________.

Accepted Answer

A) heterologues 
B) homologues 
C) allogues 
D) alleles 
E) mutoids 
A) heterologues 
B) homologues 
C) allogues 
D) alleles 
E) mutoids

Question 10

How might a transposase be responsible for our ability to ward off infectious disease?

Accepted Answer

A) Enzymes that make the proteins in antibodies also make transposases. 
B) Enzymes involved in antibody gene rearrangement may be derived from a transposase encoded by an ancient DNA transposon. 
C) Antibodies are transposases. 
D) Most transposases are antibodies. 
E) Enzymes involved in transposase gene rearrangement may be derived from ancient antibodies. 
A) Enzymes that make the proteins in antibodies also make transposases. 
B) Enzymes involved in antibody gene rearrangement may be derived from a transposase encoded by an ancient DNA transposon. 
C) Antibodies are transposases. 
D) Most transposases are antibodies. 
E) Enzymes involved in transposase gene rearrangement may be derived from ancient antibodies.

Question 11

When a gene is duplicated one or more times,it gives rise to a group of genes that may diverge by mutation,but their sequences will generally remain closely related and they will encode similar polypeptides.The proteins and genes produced in this way can be referred to as ________.

Accepted Answer

A) isotopes 
B) isomers 
C) isosceles 
D) gene families 
E) gene isoforms 
A) isotopes 
B) isomers 
C) isosceles 
D) gene families 
E) gene isoforms

Question 12

Current estimates place the number of protein-coding human genes in the neighborhood of _______.

Accepted Answer

A) 100,000 
B) 30,000 
C) 20,000 
D) 75,000 
E) 5,000 
A) 100,000 
B) 30,000 
C) 20,000 
D) 75,000 
E) 5,000

Question 13

Persons with mutations in the FOXP2 gene suffer from a severe speech and language disorder.What is the nature of the disorder?

Accepted Answer

A) The lips are malformed. 
B) People with the disorder are unable to perform the fine muscular movements of lips and tongue that are required for vocal communication. 
C) People with the disorder have malformed vocal cords. 
D) People with the disorder have a malformed tongue. 
E) People with the disorder are deaf. 
A) The lips are malformed. 
B) People with the disorder are unable to perform the fine muscular movements of lips and tongue that are required for vocal communication. 
C) People with the disorder have malformed vocal cords. 
D) People with the disorder have a malformed tongue. 
E) People with the disorder are deaf.

Question 14

What gives a DNA molecule its negative charge?

Accepted Answer

A) deoxyribose 
B) ribose 
C) phosphate groups 
D) chlorine ion 
E) adenine 
A) deoxyribose 
B) ribose 
C) phosphate groups 
D) chlorine ion 
E) adenine

Question 15

How is the extent of DNA denaturation usually measured?

Accepted Answer

A) Absorbance of UV light by DNA increases as DNA denatures. 
B) Absorbance of UV light by DNA decreases as DNA denatures. 
C) Absorbance of infrared light by DNA increases as DNA denatures. 
D) The temperature of the solution indicates the degree of denaturation. 
E) The color of the solution indicates the degree of denaturation. 
A) Absorbance of UV light by DNA increases as DNA denatures. 
B) Absorbance of UV light by DNA decreases as DNA denatures. 
C) Absorbance of infrared light by DNA increases as DNA denatures. 
D) The temperature of the solution indicates the degree of denaturation. 
E) The color of the solution indicates the degree of denaturation.

Question 16

How do Alu sequences contribute to the genetic diversity in the human population?

Accepted Answer

A) Their transposition generates considerable differences in the timing of Alu sequence movement. 
B) Alu sequences amplify the effects of genes that they abut. 
C) Their transposition generates considerable differences in the location of Alu sequences. 
D) Alu sequences change the DNA sequences of the genes that they abut. 
E) Alu sequences reshuffle genes on every chromosome. 
A) Their transposition generates considerable differences in the timing of Alu sequence movement. 
B) Alu sequences amplify the effects of genes that they abut. 
C) Their transposition generates considerable differences in the location of Alu sequences. 
D) Alu sequences change the DNA sequences of the genes that they abut. 
E) Alu sequences reshuffle genes on every chromosome.

Question 17

What do many people believe that the function of transposable elements is?

Accepted Answer

A) It is thought that they are mostly junk with no function. 
B) It is thought that they transpose base pairs. 
C) It is thought that they make enzymes more efficient. 
D) It is thought that they make enzymes less efficient. 
E) It is thought that they denature enzymes. 
A) It is thought that they are mostly junk with no function. 
B) It is thought that they transpose base pairs. 
C) It is thought that they make enzymes more efficient. 
D) It is thought that they make enzymes less efficient. 
E) It is thought that they denature enzymes.

Question 18

The bonds that hold DNA and RNA together are known as __________.

Accepted Answer

A) 3'-4'-phosphodiester linkages 
B) 3'-5'-phosphodiester linkages 
C) phosphate esters 
D) 1,4-glycosidic linkages 
E) peptide bond 
A) 3'-4'-phosphodiester linkages 
B) 3'-5'-phosphodiester linkages 
C) phosphate esters 
D) 1,4-glycosidic linkages 
E) peptide bond

Question 19

In which of the following organisms is polyploidization particularly common?

Accepted Answer

A) flowering plants 
B) wheat 
C) bananas 
D) coffee 
E) All of these are correct. 
A) flowering plants 
B) wheat 
C) bananas 
D) coffee 
E) All of these are correct.

Question 20

The individual banding patterns on Drosophila chromosomes provided evidence for the validity of what phenomenon?

Accepted Answer

A) mitosis 
B) meiosis 
C) the ability to map the positions of genes on their chromosomes 
D) translation 
E) respiration 
A) mitosis 
B) meiosis 
C) the ability to map the positions of genes on their chromosomes 
D) translation 
E) respiration

What technique supplied the data that led Watson and Crick to the double helical structure of DNA?

What was the original strain of fruit flies called?

What statement below explains the uniform width of the DNA molecule along its entire width?

The behavior of what cell constituent correlated perfectly with that of Mendel's genetic factors?

The nitrogenous base attaches to the ____-carbon of the nucleotide's sugar.

What word below refers to a pair of homologous chromosomes?

Which phrase below describes the structure of hemoglobin?

What is the major abnormality seen in the daughter cells of an egg that has been fertilized by more than one sperm?

Different versions of a gene are called _________.

How might a transposase be responsible for our ability to ward off infectious disease?

When a gene is duplicated one or more times,it gives rise to a group of genes that may diverge by mutation,but their sequences will generally remain closely related and they will encode similar polypeptides.The proteins and genes produced in this way can be referred to as ________.

Current estimates place the number of protein-coding human genes in the neighborhood of _______.

Persons with mutations in the FOXP2 gene suffer from a severe speech and language disorder.What is the nature of the disorder?

What gives a DNA molecule its negative charge?

How is the extent of DNA denaturation usually measured?

How do Alu sequences contribute to the genetic diversity in the human population?

What do many people believe that the function of transposable elements is?

The bonds that hold DNA and RNA together are known as __________.

In which of the following organisms is polyploidization particularly common?

The individual banding patterns on Drosophila chromosomes provided evidence for the validity of what phenomenon?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics,enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters

Exam 10: The Nature of the Gene and the Genome

What technique supplied the data that led Watson and Crick to the double helical structure of DNA?

What was the original strain of fruit flies called?

What statement below explains the uniform width of the DNA molecule along its entire width?

The behavior of what cell constituent correlated perfectly with that of Mendel's genetic factors?

The nitrogenous base attaches to the ____-carbon of the nucleotide's sugar.

What word below refers to a pair of homologous chromosomes?

Which phrase below describes the structure of hemoglobin?

What is the major abnormality seen in the daughter cells of an egg that has been fertilized by more than one sperm?

Different versions of a gene are called _________.

How might a transposase be responsible for our ability to ward off infectious disease?

When a gene is duplicated one or more times,it gives rise to a group of genes that may diverge by mutation,but their sequences will generally remain closely related and they will encode similar polypeptides.The proteins and genes produced in this way can be referred to as ________.

Current estimates place the number of protein-coding human genes in the neighborhood of _______.

Persons with mutations in the FOXP2 gene suffer from a severe speech and language disorder.What is the nature of the disorder?

What gives a DNA molecule its negative charge?

How is the extent of DNA denaturation usually measured?

How do Alu sequences contribute to the genetic diversity in the human population?

What do many people believe that the function of transposable elements is?

The bonds that hold DNA and RNA together are known as __________.

In which of the following organisms is polyploidization particularly common?

The individual banding patterns on Drosophila chromosomes provided evidence for the validity of what phenomenon?

Introduction to the Study of Cell and Molecular Biology

The Chemical Basis of Life

Bioenergetics,enzymes and Metabolism

The Structure and Function of the Plasma Membrane

Aerobic Respiration and the Mitochondrion

Photosynthesis and the Chloroplast

Interactions Between Cells and Their Environment

Cytoplasmic Membrane Systems: Structure, function, and Membrane Trafficking

The Cytoskeleton and Cell Motility

Gene Expression: From Transcription to Translation

Control of Gene Expression

Dna Replication and Repair

Cellular Reproduction

Cell Signaling and Signal Transduction: Communication Between Cells

Cancer

The Immune Response

Techniques in Cell and Molecular Biology

Filters