Question 1

From the standpoint of molecular biology, two similarities between the Archaea and the Eukarya are________ and _________ .

Accepted Answer

the use of histones for DNA packaging / the detailed mechanism of mRNA translation /chromosome replication (any two)

Question 2

Compare and contrast the processes of meiosis and mitosis.

Accepted Answer

Mitosis is an asexual process used to produce two identical daughter cells from one parent cell. It maintains the number of chromosome sets in a cell where the chromosomes are segregated and condensed after DNA is replicated. Meiosis also produces cells from one parent cell but does not maintain the same number of chromosome sets and instead gives half of the chromosome set to one daughter cell and another set to the other daughter cell. The meiosis process undergoes two cell divisions where four daughter cells are produced rather than two cells produced from one cell division in mitosis. The fate of the daughter cells is different after the two processes where mitosis generates more mature cells and meiosis makes gametes for sexual reproduction.

Question 3

Healthy eukaryotic cells contain all of the following EXCEPT

Accepted Answer

A)  proteins. 
B)  ssRNA. 
C)  dsDNA. 
D)  dsRNA. 
A)  proteins. 
B)  ssRNA. 
C)  dsDNA. 
D)  dsRNA. D

Question 4

Using humans as an example, explain the terms haploid and diploid and state when each is present.

Accepted Answer

Diploid cells contain two homologous cop

Question 5

Chromosomal DNA at regular intervals contains condensed DNA complexes, in which DNA is wrapped around a histone tetramer in Archaea and a histone octamer in Eukarya, and are called

Accepted Answer

A)  histonosomes. 
B)  chromatin. 
C)  nucleosomes. 
D)  supercoiled DNA. 
A)  histonosomes. 
B)  chromatin. 
C)  nucleosomes. 
D)  supercoiled DNA.

Question 6

DNA packaging in Archaea resembles both Bacteria and Eukarya. In what way(s) is DNA packaging analogous to
Bacteria and in what way(s) is it analogous to Eukarya?

Accepted Answer

Bacteria use supercoiling to d

Question 7

Comparative rRNA gene sequencing has revealed a closer genetic relationship between Archaea
and Bacteria than between Archaea and Eukarya.

Accepted Answer

A) True 
 B)False

Question 8

RNAi is triggered by dsDNA of greater than 20 bp in length.

Accepted Answer

A) True 
 B)False

Question 9

snRNPs are involved in the process of________.

Accepted Answer

The answer of snRNPs are involved in the process of________....

Question 10

Several genes encoding ________and ________of Archaea possess introns that must be removed following transcription to generate the mature molecules.

Accepted Answer

tRNA / rRN

Question 11

Compare and contrast RNA interference (RNAi) and restriction endonucleases.

Accepted Answer

Eukaryotes lack restriction endonuclease

Question 12

Positive supercoiling protects archaeal DNA against ultraviolet (UV) radiation.

Accepted Answer

A) True 
 B)False

Question 13

An mRNA transcript may be polycistronic in

Accepted Answer

A)  eukaryotic cells. 
B)  prokaryotic cells. 
C)  both eukaryotic and prokaryotic cells. 
D)  neither eukaryotic nor prokaryotic cells. 
A)  eukaryotic cells. 
B)  prokaryotic cells. 
C)  both eukaryotic and prokaryotic cells. 
D)  neither eukaryotic nor prokaryotic cells.

Question 14

Compare and contrast enzymes and ribozymes of self- splicing introns.

Accepted Answer

RNA strands that fold into complex struc

Question 15

All DNA polymerases must add each nucleotide to a(n)________ , which is often denoted as the________ end.

Accepted Answer

free hydro

Question 16

The translational machinery of Archaea is more similar to Bacteria than to Eukarya.

Accepted Answer

A) True 
 B)False

Question 17

Technically, telomerase is an unusual type of reverse transcriptase.

Accepted Answer

A) True 
 B)False

Question 18

Explain the necessity for a protein primer during replication of linear DNA.

Accepted Answer

Much like an RNA primer, prote

Question 19

Which enzyme aids in replication of DNA at the guanine- rich 3' end of a strand of DNA?

Accepted Answer

A)  DNA polymerase 
B)  hydrolase 
C)  RNAse 
D)  telomerase 
A)  DNA polymerase 
B)  hydrolase 
C)  RNAse 
D)  telomerase

Question 20

The 5.8S rRNA is a ribosomal protein found in________ but not in ________.

Accepted Answer

Eukarya /

Exam 7: Archael and Eukaryotic Molecular Biology

From the standpoint of molecular biology, two similarities between the Archaea and the Eukarya are________ and _________ .

Compare and contrast the processes of meiosis and mitosis.

Healthy eukaryotic cells contain all of the following EXCEPT

Using humans as an example, explain the terms haploid and diploid and state when each is present.

Chromosomal DNA at regular intervals contains condensed DNA complexes, in which DNA is wrapped around a histone tetramer in Archaea and a histone octamer in Eukarya, and are called

DNA packaging in Archaea resembles both Bacteria and Eukarya. In what way(s) is DNA packaging analogous to Bacteria and in what way(s) is it analogous to Eukarya?

Comparative rRNA gene sequencing has revealed a closer genetic relationship between Archaea and Bacteria than between Archaea and Eukarya.

RNAi is triggered by dsDNA of greater than 20 bp in length.

snRNPs are involved in the process of________.

Several genes encoding ________and ________of Archaea possess introns that must be removed following transcription to generate the mature molecules.

Compare and contrast RNA interference (RNAi) and restriction endonucleases.

Positive supercoiling protects archaeal DNA against ultraviolet (UV) radiation.

An mRNA transcript may be polycistronic in

Compare and contrast enzymes and ribozymes of self- splicing introns.

All DNA polymerases must add each nucleotide to a(n)________ , which is often denoted as the________ end.

The translational machinery of Archaea is more similar to Bacteria than to Eukarya.

Technically, telomerase is an unusual type of reverse transcriptase.

Explain the necessity for a protein primer during replication of linear DNA.

Which enzyme aids in replication of DNA at the guanine- rich 3' end of a strand of DNA?

The 5.8S rRNA is a ribosomal protein found in________ but not in ________.

Microorganisms and Microbiology

A Brief Journey to the Microbial World

Cell Structure and Function in Bacteria and Archaea

Nutrition, Culture, and Metabolism of Microorganisms

Microbial Growth

Molecular Biology of Bacteria

Regulation of Gene Expression

Viruses and Virology

Genetics of Bacteria and Arachaea

Genetic Engineering

Microbial Genomics

Phototrophy, Chemolithotrophy, and Major Biosyntheses

Catabolism of Organic Compounds

Commercial Products and Biotechnology

Microbial Evolution and Systematics

Bacteria: the Proteobacteria

Other Bacteria

Archaea

Eukaryotic Cell Biology and Eukaryotic Microorganisms

Viral Diversity

Methods in Microbial Ecology

Major Microbial Habitats and Diversity

Nutrient Cycles, Biodegradation, and Bioremediation

Microbial Symbioses

Microbial Growth Control

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology and Immunology

Epidemiology

Person-To-Person Microbial Diseases

Vectorborne and Soilborne Microbial Pathogens

Wastewater Treatment, Water Purification, and Waterborne Microbial Diseases

Food Preservation and Foodborne Microbial Diseases

Filters

From the standpoint of molecular biology, two similarities between the Archaea and the Eukarya are and _ .

Several genes encoding and of Archaea possess introns that must be removed following transcription to generate the mature molecules.

All DNA polymerases must add each nucleotide to a(n) , which is often denoted as the end.

The 5.8S rRNA is a ribosomal protein found in but not in .