Question 1

A Barr body exists for the purpose of _____.

Accepted Answer

A) gene dosage compensation 
B) insuring fertilization 
C) blocking the activity of the Y chromosome 
D) turning on the SRY gene 
E) activating master genes 
A) gene dosage compensation 
B) insuring fertilization 
C) blocking the activity of the Y chromosome 
D) turning on the SRY gene 
E) activating master genes

Question 2

In prokaryotes, translation takes place in the _____.

Accepted Answer

A) cytoplasm 
B) nucleus 
C) plasma membrane 
D) endoplasmic reticulum 
E) Golgi bodies 
A) cytoplasm 
B) nucleus 
C) plasma membrane 
D) endoplasmic reticulum 
E) Golgi bodies

Question 3

Which type of mutation results in sickle cell anemia?

Accepted Answer

A) base-pair substitution 
B) insertion 
C) deletion 
D) frame-shift 
E) gene duplication 
A) base-pair substitution 
B) insertion 
C) deletion 
D) frame-shift 
E) gene duplication

Question 4

What is the genetic code?

Accepted Answer

A) all of our genes collectively 
B) all of our base-pairs collectively 
C) the genetic "words" that code for amino acids 
D) the genes in DNA that code for proteins 
E) the genes that encode protein products 
A) all of our genes collectively 
B) all of our base-pairs collectively 
C) the genetic "words" that code for amino acids 
D) the genes in DNA that code for proteins 
E) the genes that encode protein products

Question 5

Homeotic genes encode which type of protein?

Accepted Answer

A) transcription factors 
B) ribosomal proteins 
C) channel proteins 
D) membrane-associated proteins 
E) DNA methylases 
A) transcription factors 
B) ribosomal proteins 
C) channel proteins 
D) membrane-associated proteins 
E) DNA methylases

Question 6

Most homeotic genes encode _____; therefore, the protein products of these master genes are found in the _____.

Accepted Answer

A) stop codons; ribosomes 
B) transcription factors; nucleus 
C) transcription factors; extracellular matrix 
D) splicing proteins; endoplasmic reticulum 
E) energy releasing proteins; mitochondria 
A) stop codons; ribosomes 
B) transcription factors; nucleus 
C) transcription factors; extracellular matrix 
D) splicing proteins; endoplasmic reticulum 
E) energy releasing proteins; mitochondria

Question 7

What is an anticodon?

Accepted Answer

A) the region of DNA that codes for the codon 
B) the region of DNA that base pairs with the codon 
C) the region of the mRNA that codes for an amino acid 
D) the region of the mRNA that base pairs with the tRNA 
E) the region of the tRNA that base pairs with the mRNA 
A) the region of DNA that codes for the codon 
B) the region of DNA that base pairs with the codon 
C) the region of the mRNA that codes for an amino acid 
D) the region of the mRNA that base pairs with the tRNA 
E) the region of the tRNA that base pairs with the mRNA

Question 8

In mammals, X chromosome inactivation results in _____.

Accepted Answer

A) a total inactivation of both female X chromosomes 
B) only the inactivation of the paternal X chromosome in females 
C) only the inactivation of the maternal X chromosome in females 
D) the random inactivation of either the paternal  or the maternal X in females 
E) the inactivation of the maternal X chromosome in males 
A) a total inactivation of both female X chromosomes 
B) only the inactivation of the paternal X chromosome in females 
C) only the inactivation of the maternal X chromosome in females 
D) the random inactivation of either the paternal  or the maternal X in females 
E) the inactivation of the maternal X chromosome in males

Question 9

A gene is a DNA sequence that codes for a protein or _____ product.

Accepted Answer

A) RNA 
B) DNA 
C) ribosomes 
D) a lipid 
E) exons 
A) RNA 
B) DNA 
C) ribosomes 
D) a lipid 
E) exons

Question 10

In this representation of transcription, strand # ____ is ____ because it ____.

Accepted Answer

A) 2; RNA; is double-stranded 
B) 3; RNA; contains uracil 
C) 2; RNA; contains thymine 
D) 2; RNA; has no uracil 
E) 3; DNA; contains adenine 
A) 2; RNA; is double-stranded 
B) 3; RNA; contains uracil 
C) 2; RNA; contains thymine 
D) 2; RNA; has no uracil 
E) 3; DNA; contains adenine

Question 11

In prokaryotes, transcription occurs in the _____.

Accepted Answer

A) mitochondria 
B) cytoplasm 
C) ribosomes 
D) nucleus 
E) endoplasmic reticulum 
A) mitochondria 
B) cytoplasm 
C) ribosomes 
D) nucleus 
E) endoplasmic reticulum

Question 12

What are the non-coding segments of DNA called?

Accepted Answer

A) introns 
B) exons 
C) promoters 
D) transcription factors 
E) knockouts 
A) introns 
B) exons 
C) promoters 
D) transcription factors 
E) knockouts

Question 13

Which nucleotide is added to the end of a completed messenger RNA transcript?

Accepted Answer

A) adenine 
B) thymine 
C) cytosine 
D) guanine 
E) alternating adenine and thymine 
A) adenine 
B) thymine 
C) cytosine 
D) guanine 
E) alternating adenine and thymine

Question 14

Match between columns
                        Premises: an mRNA code for one amino acid

Accepted Answer

The Answer of genetic code and rRNA and transcription and is...

Question 15

The information from messenger RNA is used to create polypeptide sequences during the process of _____.

Accepted Answer

A) transduction 
B) transcription 
C) transformation 
D) translation 
E) replication 
A) transduction 
B) transcription 
C) transformation 
D) translation 
E) replication

Question 16

Match between columns
                        Premises: site at which RNA polymerase binds and initiates transcription

Accepted Answer

The Answer of translation and genetic code and anticodon and is...

Question 17

Match between columns
                        Premises: binds to ribosomes to begin translation

Accepted Answer

The Answer of translation termination and codon and anticodon and is...

Question 18

During transcription, _____.

Accepted Answer

A) non-coding sequences are removed from the RNA transcript 
B) regulatory proteins attach to the DNA at the promoter site 
C) DNA polymerase assembles RNA nucleotides 
D) the entire DNA strand opens up for complete gene transcription 
E) tRNA brings nucleotides to the DNA strand 
A) non-coding sequences are removed from the RNA transcript 
B) regulatory proteins attach to the DNA at the promoter site 
C) DNA polymerase assembles RNA nucleotides 
D) the entire DNA strand opens up for complete gene transcription 
E) tRNA brings nucleotides to the DNA strand

Question 19

In eukaryotes, DNA is transcribed in the _____.

Accepted Answer

A) mitochondria 
B) cytoplasm 
C) ribosomes 
D) nucleus 
E) endoplasmic reticulum 
A) mitochondria 
B) cytoplasm 
C) ribosomes 
D) nucleus 
E) endoplasmic reticulum

Question 20

The master gene that controls eye development in all multicellular eukaryotes is an example of a(n)_____.

Accepted Answer

A) homeotic gene 
B) conserved protein 
C) RNA enzyme 
D) Barr body 
E) translation factor 
A) homeotic gene 
B) conserved protein 
C) RNA enzyme 
D) Barr body 
E) translation factor

Exam 7: Gene Expression and Control

A Barr body exists for the purpose of _____.

In prokaryotes, translation takes place in the _____.

Which type of mutation results in sickle cell anemia?

What is the genetic code?

Homeotic genes encode which type of protein?

Most homeotic genes encode _____; therefore, the protein products of these master genes are found in the _____.

What is an anticodon?

In mammals, X chromosome inactivation results in _____.

A gene is a DNA sequence that codes for a protein or _____ product.

In this representation of transcription, strand # ____ is ____ because it ____.

In prokaryotes, transcription occurs in the _____.

What are the non-coding segments of DNA called?

Which nucleotide is added to the end of a completed messenger RNA transcript?

The information from messenger RNA is used to create polypeptide sequences during the process of _____.

During transcription, _____.

In eukaryotes, DNA is transcribed in the _____.

The master gene that controls eye development in all multicellular eukaryotes is an example of a(n)_____.

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

Dna Structure and Function

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the 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

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

Filters

Most homeotic genes encode _; therefore, the protein products of these master genes are found in the _.

In this representation of transcription, strand # is because it .