Question 1

The genes for hemoglobin ____.

Accepted Answer

A) are found only in red blood cells 
B) are never regulated 
C) contain only introns 
D) are turned off in a small percentage of body cells 
E) are found in all body cells 
A) are found only in red blood cells 
B) are never regulated 
C) contain only introns 
D) are turned off in a small percentage of body cells 
E) are found in all body cells

Question 2

The first federally approved gene therapy for humans was designed to treat ____.

Accepted Answer

A) severe combined immune deficiency 
B) Diabetes 
C) cystic fibrosis 
D) Hemophilia 
E) Leukemia 
A) severe combined immune deficiency 
B) Diabetes 
C) cystic fibrosis 
D) Hemophilia 
E) Leukemia

Question 3

DNA sequencing provides scientists with all of the following EXCEPT ____.

Accepted Answer

A) the plasmid structure 
B) possible gene mutations 
C) location of gene on the chromosome 
D) how many nucleotides in the gene 
E) the nucleotide sequence 
A) the plasmid structure 
B) possible gene mutations 
C) location of gene on the chromosome 
D) how many nucleotides in the gene 
E) the nucleotide sequence

Question 4

The basic building blocks of DNA are ____.

Accepted Answer

A) proteins 
B) fats 
C) amino acids 
D) nucleotides 
E) phosphates and sugars 
A) proteins 
B) fats 
C) amino acids 
D) nucleotides 
E) phosphates and sugars

Question 5

If a DNA sequence is ATC, what is the sequence in the molecule produced during transcription?

Accepted Answer

A) UAG 
B) TAG 
C) ATC 
D) AUG 
E) AUC 
A) UAG 
B) TAG 
C) ATC 
D) AUG 
E) AUC

Question 6

Which nucleic acid is a major part of ribosomes?

Accepted Answer

A) DNA 
B) rRNA 
C) mRNA 
D) tRNA 
E) RNA polymerase 
A) DNA 
B) rRNA 
C) mRNA 
D) tRNA 
E) RNA polymerase

Question 7

If a DNA sequence on one side of the strand is ATCGATG, what is the corresponding sequence?

Accepted Answer

A) TAGCTAC 
B) UAGCUAC 
C) TUGCUTC 
D) ATCGATG 
E) TTACGTC 
A) TAGCTAC 
B) UAGCUAC 
C) TUGCUTC 
D) ATCGATG 
E) TTACGTC

Question 8

In which phase of translation are peptide bonds formed?

Accepted Answer

A) replication 
B) transcription 
C) initiation 
D) elongation 
E) termination 
A) replication 
B) transcription 
C) initiation 
D) elongation 
E) termination

Question 9

Which condition is associated with an extra copy of chromosome #21?

Accepted Answer

A) sickle-cell anemia 
B) Down syndrome 
C) ALS 
D) Epilepsy 
E) Schizophrenia 
A) sickle-cell anemia 
B) Down syndrome 
C) ALS 
D) Epilepsy 
E) Schizophrenia

Question 10

Which of the following is characteristic of transcription?

Accepted Answer

A) occurs in cytoplasm 
B) utilizes DNA polymerase 
C) produces a single-stranded molecule 
D) produces new DNA 
E) produces a protein 
A) occurs in cytoplasm 
B) utilizes DNA polymerase 
C) produces a single-stranded molecule 
D) produces new DNA 
E) produces a protein

Question 11

DNA fingerprinting utilizes ____.

Accepted Answer

A) SNPs 
B) Lipoplexes 
C) Prions 
D) tandem repeats 
E) "suicide tags" 
A) SNPs 
B) Lipoplexes 
C) Prions 
D) tandem repeats 
E) "suicide tags"

Question 12

Which genetic disorder is caused by an expansion mutation?

Accepted Answer

A) cystic fibrosis 
B) muscular dystrophy 
C) color-blindness 
D) fragile X syndrome 
E) sickle-cell anemia 
A) cystic fibrosis 
B) muscular dystrophy 
C) color-blindness 
D) fragile X syndrome 
E) sickle-cell anemia

Question 13

A polysome is ____.

Accepted Answer

A) one of the units of a ribosome 
B) the nuclear organelle that synthesizes RNA 
C) an organelle that functions similarly to a ribosome during meiosis 
D) the two units of a ribosome considered together 
E) an mRNA molecule with several ribosomes attached 
A) one of the units of a ribosome 
B) the nuclear organelle that synthesizes RNA 
C) an organelle that functions similarly to a ribosome during meiosis 
D) the two units of a ribosome considered together 
E) an mRNA molecule with several ribosomes attached

Question 14

Which of the following is NOT a component of DNA?

Accepted Answer

A) thymine 
B) phosphate 
C) adenine 
D) ribose 
E) guanine 
A) thymine 
B) phosphate 
C) adenine 
D) ribose 
E) guanine

Question 15

So far, gene therapy has been most successful in treating all of the following EXCEPT ____.

Accepted Answer

A) malignant melanoma 
B) Leukemia 
C) brain cancer 
D) ovarian cancer 
E) Parkinson disease 
A) malignant melanoma 
B) Leukemia 
C) brain cancer 
D) ovarian cancer 
E) Parkinson disease

Question 16

Which molecules influence the rate of transcription?

Accepted Answer

A) RNA polymerase 
B) regulatory proteins 
C) exons 
D) DNA 
E) promoters 
A) RNA polymerase 
B) regulatory proteins 
C) exons 
D) DNA 
E) promoters

Question 17

The nucleotide sequence in mRNA that carries the protein-building instructions is the ____.

Accepted Answer

A) promoter 
B) nucleotide cap 
C) introns 
D) transcript 
E) exon 
A) promoter 
B) nucleotide cap 
C) introns 
D) transcript 
E) exon

Question 18

The first amino acid delivered during translation is ____.

Accepted Answer

A) tyrosine 
B) alanine 
C) proline 
D) methionine 
E) valine 
A) tyrosine 
B) alanine 
C) proline 
D) methionine 
E) valine

Question 19

During DNA replication, which enzymes unwind DNA?

Accepted Answer

A) DNA polymerase 
B) DNA reducatase 
C) DNA replicase 
D) DNA helicase 
E) DNA-RNA synthase 
A) DNA polymerase 
B) DNA reducatase 
C) DNA replicase 
D) DNA helicase 
E) DNA-RNA synthase

Question 20

PCR uses a special DNA polymerase that resists ____.

Accepted Answer

A) time decay 
B) acids 
C) bases 
D) high temperatures 
E) centrifugation 
A) time decay 
B) acids 
C) bases 
D) high temperatures 
E) centrifugation

Exam 21: DNA Genes and Biotechnology

The genes for hemoglobin ____.

The first federally approved gene therapy for humans was designed to treat ____.

DNA sequencing provides scientists with all of the following EXCEPT ____.

The basic building blocks of DNA are ____.

If a DNA sequence is ATC, what is the sequence in the molecule produced during transcription?

Which nucleic acid is a major part of ribosomes?

If a DNA sequence on one side of the strand is ATCGATG, what is the corresponding sequence?

In which phase of translation are peptide bonds formed?

Which condition is associated with an extra copy of chromosome #21?

Which of the following is characteristic of transcription?

DNA fingerprinting utilizes ____.

Which genetic disorder is caused by an expansion mutation?

A polysome is ____.

Which of the following is NOT a component of DNA?

So far, gene therapy has been most successful in treating all of the following EXCEPT ____.

Which molecules influence the rate of transcription?

The nucleotide sequence in mRNA that carries the protein-building instructions is the ____.

The first amino acid delivered during translation is ____.

During DNA replication, which enzymes unwind DNA?

PCR uses a special DNA polymerase that resists ____.

Learning About Human Biology

Chemistry of Life

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

Genes and Disease: Cancer

Principles of Evolution

Principles of Ecology

Human Impacts on the Biosphere

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