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Q 1/232
Score 0
In terms of size, how do archaea generally compare to bacteria?
30
Archaea are usually smaller than most bacteria
Archaea are about the same size as bacteria
Archaea are larger than most bacteria
Archaea are extremely larger than bacteria
Q 2/232
Score 0
Which of the following statements is true regarding the cell wall composition of archaea and bacteria?
30
Archaea lack cell walls altogether
Bacteria have cell walls composed of pseudopeptidoglycan or S-layers
Both archaea and bacteria have cell walls made of peptidoglycan
Archaea have cell walls composed of pseudopeptidoglycan or S-layers
232 questions
Q.
In terms of size, how do archaea generally compare to bacteria?
1
30 sec
Q.
Which of the following statements is true regarding the cell wall composition of archaea and bacteria?
2
30 sec
Q.
Which of the following is a common method used to distinguish between archaea and bacteria in the laboratory?
3
30 sec
Q.
What is a distinguishing feature of the cell membrane structure in archaea compared to bacteria?
4
30 sec
Q.
What is a unique feature of archaea compared to bacteria?
5
30 sec
Q.
Which of the following is a characteristic of archaea but not bacteria?
6
30 sec
Q.
What is a distinct feature of archaea's cell structure compared to bacteria?
7
30 sec
Q.
Complete the following: https://www.purposegames.com/game/bacteria-or-archaea-bio14
8
30 sec
Q.
Psudomurein is a component found in the cell walls of which type of microorganism?
9
30 sec
Q.
Psudomurein is also known by which other term?
10
30 sec
Q.
What is the primary function of psudomurein in the cell walls of Archaea?
11
30 sec
Q.
Where is psudomurein typically found within the cell wall structure of Archaea?
12
30 sec
Q.
Which feature distinguishes psudomurein from traditional peptidoglycan found in bacterial cell walls?
13
30 sec
Q.
Which component is absent in psudomurein but present in traditional peptidoglycan?
14
30 sec
Q.
What is the primary function of NAM in psudomurein?
15
30 sec
Q.
What role does NAT play in the composition of psudomurein?
16
30 sec
Q.
What is the main function of psudomurein in bacterial cells?
17
30 sec
Q.
What is the composition of psudomurein that distinguishes it from traditional peptidoglycan?
18
30 sec
Q.
What is the role of psudomurein in bacterial cells?
19
30 sec
Q.
Which component is absent in pseudomurein, distinguishing it from peptidoglycan?
20
30 sec
Q.
What is the fundamental difference between NAM and NAT in peptidoglycan biosynthesis?
21
30 sec
Q.
What is the purpose of the archaea slime layer?
22
30 sec
Q.
What is a key characteristic of the archaea slime layer?
23
30 sec
Q.
Which of the following is NOT a function of the archaea slime layer?
24
30 sec
Q.
Why do archaea differ from bacteria in terms of acid-fast staining?
25
30 sec
Q.
Which of the following is a characteristic of archaea with regards to acid-fast staining?
26
30 sec
Q.
What type of staining technique is commonly used to differentiate acid-fast organisms like mycobacteria from non-acid-fast bacteria?
27
30 sec
Q.
Which component of acid-fast bacteria's cell wall contributes to their resistance to staining?
28
30 sec
Q.
Which disease is primarily detected using acid-fast staining due to its causative organism's characteristics?
29
30 sec
Q.
Which of the following diseases is NOT caused by an acid-fast bacterium?
30
30 sec
Q.
Which motor protein is responsible for DNA packaging in bacteriophages?
31
30 sec
Q.
What is the primary function of the bacterial packaging motor protein in the DNA packaging process?
32
30 sec
Q.
What is the role of the portal protein in the bacterial packaging motor complex?
33
30 sec
Q.
Which type of phages have the ability to integrate their genome into the host chromosome instead of immediately undergoing replication?
34
30 sec
Q.
What is the term used to describe the cycle of a temperate bacteriophage in which it remains dormant by integrating its genome into the host chromosome?
35
30 sec
Q.
What is the term used to describe the process by which a temperate bacteriophage integrates its genome into the host chromosome?
36
30 sec
Q.
What is the main difference between temperate bacteriophages and virulent bacteriophages?
37
30 sec
Q.
What is the function of the repressor protein in a temperate bacteriophage during lysogeny?
38
30 sec
Q.
What is the term used to describe the process by which a temperate bacteriophage switches from the lysogenic cycle to the lytic cycle?
39
30 sec
Q.
Which type of viral capsid has a polyhedral shape?
40
30 sec
Q.
Which of the following statements is true about polyhedral capsids?
41
30 sec
Q.
What is the primary function of the polyhedral capsid in a virus?
42
30 sec
Q.
What is the term used to describe the process by which a virus assembles its polyhedral capsid?
43
30 sec
Q.
What defines Generalized Transduction in bacteriophages?
44
30 sec
Q.
What is a key difference between Generalized Transduction and Specialized Transduction?
45
30 sec
Q.
Which process involves the integration of bacteriophage DNA into the host cell's genome?
46
30 sec
Q.
Which transduction process requires a helper phage to integrate specific bacterial genes into the host cell's genome?
47
30 sec
Q.
What distinguishes Specialized Transduction from Generalized Transduction in terms of bacterial genes transfer?
48
30 sec
Q.
Which process involves a bacteriophage carrying a random piece of bacterial DNA from one cell to another?
49
30 sec
Q.
Which of the following viruses is classified as a retrovirus?
50
30 sec
Q.
What enzyme do retroviruses use to convert RNA into DNA?
51
30 sec
Q.
Which of the following is a characteristic feature of retroviruses?
52
30 sec
Q.
What is the function of reverse transcriptase?
53
30 sec
Q.
Which type of virus utilizes reverse transcriptase for its genome replication?
54
30 sec
Q.
What is the role of reverse transcriptase in the production of cDNA?
55
30 sec
Q.
In molecular biology, which term refers to the strand of DNA that serves as a template for transcription? Is it the:
56
30 sec
Q.
In genetics, which term is used to describe a strand of DNA that is complementary to the sense strand? Is it the:
57
30 sec
Q.
Which of the following DNA strands is typically used to code for a protein in a cell? Is it the:
58
30 sec
Q.
In gene expression, which DNA strand is used as the template for the synthesis of an RNA molecule? Is it the:
59
30 sec
Q.
When considering the direction of transcription in DNA, which strand is known as the non-template or noncoding strand? Is it the:
60
30 sec
Q.
Which term is used to describe the strand of DNA that does not directly code for the RNA transcript but serves as a complementary template? Is it the:
61
30 sec
Q.
Which of the following is true regarding viroids?
62
30 sec
Q.
How do viroids differ from prions?
63
30 sec
Q.
Which of the following best describes the replication process of viroids?
64
30 sec
Q.
What is the mode of entry for viroids into plant cells?
65
30 sec
Q.
What is a prion?
66
30 sec
Q.
How do prions differ from viruses?
67
30 sec
Q.
What is the name of the disease caused by prions in humans?
68
30 sec
Q.
How do prions cause damage to the brain?
69
30 sec
Q.
What is the possible mechanism by which prions can enter the body?
70
30 sec
Q.
What is dysbiosis?
71
30 sec
Q.
How can dysbiosis affect human health?
72
30 sec
Q.
What are some common causes of dysbiosis?
73
30 sec
Q.
How can dysbiosis be diagnosed?
74
30 sec
Q.
What role does the gut microbiota play in maintaining human health?
75
30 sec
Q.
Which of the following is a mechanism used by bacteria to adhere to host cells?
76
30 sec
Q.
Which protein is commonly involved in bacterial adhesion to host cells?
77
30 sec
Q.
What is the role of biofilms in bacterial adherence?
78
30 sec
Q.
Which of the following bacterial adhesion mechanisms involves the use of fimbriae?
79
30 sec
Q.
What is the function of bacterial fimbriae?
80
30 sec
Q.
Which protein subunits make up bacterial fimbriae?
81
30 sec
Q.
How do bacterial fimbriae differ from flagella?
82
30 sec
Q.
Where are bacterial fimbriae typically located on the bacterial cell?
83
30 sec
Q.
How do bacterial fimbriae contribute to bacterial pathogenesis?
84
30 sec
Q.
What is the role of bacterial fimbriae in promoting bacterial virulence?
85
30 sec
Q.
What is the term used to describe the ability of bacteria to cause disease in a host?
86
30 sec
Q.
Which of the following is a mechanism of bacterial virulence?
87
30 sec
Q.
What is a common bacterial virulence factor that helps bacteria evade the host immune system?
88
30 sec
Q.
Which of the following is an example of a bacterial virulence factor that enhances bacterial invasion?
89
30 sec
Q.
What does bacterial attenuation refer to?
90
30 sec
Q.
How is bacterial attenuation achieved?
91
30 sec
Q.
What is the purpose of bacterial attenuation in vaccine development?
92
30 sec
Q.
What is one common method of genetic manipulation used for bacterial attenuation?
93
30 sec
Q.
What is the main goal of bacterial attenuation in the context of treatment?
94
30 sec
Q.
Why is bacterial attenuation important in the development of vaccines?
95
30 sec
Q.
What is a phagosome?
96
30 sec
Q.
What process leads to the formation of a phagosome?
97
30 sec
Q.
What is the main function of a phagosome in a cell?
98
30 sec
Q.
What is the process by which a phagosome fuses with a lysosome?
99
30 sec
Q.
What type of cells are typically involved in the process of phagocytosis to form a phagosome?
100
30 sec
Q.
What is the role of a phagosome in antigen processing and presentation?
101
30 sec
Q.
Which of the following best describes an antigen?
102
30 sec
Q.
What is the role of antigens in the immune system?
103
30 sec
Q.
Which of the following cells is responsible for presenting antigens to T cells?
104
30 sec
Q.
What is the function of antibodies in response to antigens?
105
30 sec
Q.
What is the primary function of MHC molecules in the immune response to antigens?
106
30 sec
Q.
What is the main difference between natural and artificial immunity?
107
30 sec
Q.
Which type of immunity is developed as a result of being vaccinated against a specific pathogen?
108
30 sec
Q.
Which type of immunity is generally long-lasting and provides lifelong protection?
109
30 sec
Q.
What is a key advantage of artificial immunity over natural immunity?
110
30 sec
Q.
What is the primary difference between passive immunity and active immunity?
111
30 sec
Q.
What are the 5 key steps in virus life cycle?
112
30 sec
Q.
What is the purpose of the uncoating step in the virus life cycle?
113
30 sec
Q.
Which step of the virus life cycle involves the virus gaining access to the host cell's interior?
114
30 sec
Q.
During which step of the virus life cycle does the virus attach to the host cell receptor?
115
30 sec
Q.
What occurs during the replication step in the virus life cycle?
116
30 sec
Q.
What is the final step of the virus life cycle where newly formed virus particles are released from the host cell?
117
30 sec
Q.
During which step of the virus life cycle does the virus release its genetic material into the host cell's cytoplasm?
118
30 sec
Q.
What is the term used to describe the process where a virus acquires its envelope while exiting the host cell?
119
30 sec
Q.
Which step of the virus life cycle involves the virus hijacking the host cell's machinery to produce viral components?
120
30 sec
Q.
Which of the following is NOT a key step in the virus life cycle?
121
30 sec
Q.
In the virus life cycle, what is the process where the virus releases newly formed viral particles from the host cell?
122
30 sec
Q.
What is the difference between a capsid and enveloped virus?
123
30 sec
Q.
Which of the following statements is true regarding the replication process of capsid and enveloped viruses?
124
30 sec
Q.
Which of the following is a characteristic specific to enveloped viruses?
125
30 sec
Q.
What role does the lipid bilayer envelope play in the infectivity of enveloped viruses?
126
30 sec
Q.
How do capsid and enveloped viruses differ in terms of stability outside a host cell?
127
30 sec
Q.
What role does the scaffold protein play in the packaging of the bacteriophage genome?
128
30 sec
Q.
How does the bacteriophage ensure that its genome is selectively packaged into the protein capsid?
129
30 sec
Q.
Which step in virion assembly and release involves the packaging of the viral genome into the capsid?
130
30 sec
Q.
What is the final step in the process of virion release from an infected host cell?
131
30 sec
Q.
Which of the following is a key step involved in microbial (bacterial) pathogenesis?
132
30 sec
Q.
Which of the following correctly lists the key steps involved in microbial (bacterial) pathogenesis?
133
30 sec
Q.
Which of the following is a common mechanism by which bacteria can acquire antibiotic resistance genes?
134
30 sec
Q.
Which bacterial structure is involved in the process of invasion, allowing bacteria to enter host cells or tissues?
135
30 sec
Q.
What is virulence?
136
30 sec
Q.
What determines the virulence of a pathogen?
137
30 sec
Q.
How does virulence affect the outcome of an infection?
138
30 sec
Q.
How can microbial virulence be measured?
139
30 sec
Q.
How is virulence measured in experimental studies?
140
30 sec
Q.
What is the LD50?
141
30 sec
Q.
How do researchers quantify virulence in experimental studies?
142
30 sec
Q.
Which microbial structures facilitate adhesion of microbes to host cells?
143
30 sec
Q.
Which microbial structures play a key role in the attachment of viruses to host cells?
144
30 sec
Q.
Which statement best describes invasion, infection, and virulence factors for pathogenic bacteria?
145
30 sec
Q.
How do pathogenic bacteria typically invade host tissues?
146
30 sec
Q.
What is the role of virulence factors in the pathogenicity of bacteria?
147
30 sec
Q.
What is a key difference between the modes of action of exotoxins and endotoxins?
148
30 sec
Q.
Which type of toxin is associated with gram-negative bacteria?
149
30 sec
Q.
Which type of toxin is typically composed of proteins released by bacteria?
150
30 sec
Q.
How can you differentiate exotoxins from endotoxins?
151
30 sec
Q.
Which type of toxin is more likely to be neutralized by antibodies produced by the immune system?
152
30 sec
Q.
Which type of toxin is more likely to induce fever, inflammation, and septic shock?
153
30 sec
Q.
Which type of toxin is more likely to be heat-stable and resistant to denaturation?
154
30 sec
Q.
Which type of toxin is part of the bacterial cell wall and is released when the bacteria die?
155
30 sec
Q.
Which of the following is an example of a physical barrier in the immune system?
156
30 sec
Q.
Which of the following is an example of a physical barrier in the immune system?
157
30 sec
Q.
Which of the following is an example of a physical barrier in the immune system?
158
30 sec
Q.
Which of the following is an example of a chemical defense in the immune system?
159
30 sec
Q.
Which of the following is an example of a chemical defense in the immune system?
160
30 sec
Q.
Which of the following is an example of a chemical defense in the immune system?
161
30 sec
Q.
How are B cells activated? List the two mechanisms.
162
30 sec
Q.
What is the primary function of B cells in the immune system?
163
30 sec
Q.
What is the role of memory B cells in the immune response?
164
30 sec
Q.
What is the function of plasma cells in the immune system?
165
30 sec
Q.
What is the role of CD4+ T cells in the activation of B cells?
166
30 sec
Q.
What is the function of the follicular dendritic cells in the germinal centers?
167
30 sec
Q.
What is a characteristic feature of memory B cells?
168
30 sec
Q.
How do memory T cells contribute to the immune response upon re-infection?
169
30 sec
Q.
Why is ssu-rRNA considered a useful molecular marker for studying bacterial evolution and classification?
170
30 sec
Q.
How does the comparison of ssu-rRNA sequences between different bacterial species contribute to the field of phylogeny?
171
30 sec
Q.
What are proteobacteria?
172
30 sec
Q.
Where can proteobacteria be found in nature?
173
30 sec
Q.
What role do proteobacteria play in the nitrogen cycle?
174
30 sec
Q.
What are Firmicutes?
175
30 sec
Q.
What is the primary function of Firmicutes in the human gut microbiome?
176
30 sec
Q.
How do Firmicutes contribute to obesity in humans?
177
30 sec
Q.
What is the role of Firmicutes in fermenting dairy products?
178
30 sec
Q.
How do Firmicutes contribute to the production of short-chain fatty acids in the gut?
179
30 sec
Q.
What is one potential consequence of an imbalance of Firmicutes in the gut microbiome?
180
30 sec
Q.
How does the periplasm contribute to bacterial antibiotic resistance?
181
30 sec
Q.
What type of molecules are often found in the periplasm of bacterial cells?
182
30 sec
Q.
What is the role of the periplasm in bacterial metabolism?
183
30 sec
Q.
What is the role of the periplasm in mitochondrial bacteria metabolism?
184
30 sec
Q.
What is the function of the electron transport chain in bacterial metabolism?
185
30 sec
Q.
Which enzyme is responsible for converting fructose-6-phosphate to fructose-1,6-bisphosphate in glycolysis?
186
30 sec
Q.
What is the first step in glycolysis?
187
30 sec
Q.
What is the net ATP yield per glucose molecule in glycolysis?
188
30 sec
Q.
Which molecule serves as the initial substrate for glycolysis?
189
30 sec
Q.
Be able to draw the following: https://www.purposegames.com/game/glycolysis-quiz
190
30 sec
Q.
What is the difference between bactericidal and bacteriostatic antibiotics?
191
30 sec
Q.
Which type of antibiotics is more effective in treating severe infections that require rapid bacterial killing?
192
30 sec
Q.
Which type of fermentation is responsible for the production of yogurt and sourdough bread?
193
30 sec
Q.
Which type of fermentation is used in the production of beer and wine?
194
30 sec
Q.
Which type of fermentation is involved in the production of vinegar?
195
30 sec
Q.
Which type of fermentation is commonly used in the production of sauerkraut and kimchi?
196
30 sec
Q.
Which process is responsible for the production of lactic acid in muscles during intense exercise?
197
30 sec
Q.
What is the main purpose of lactic acid fermentation?
198
30 sec
Q.
What is a psychrophile?
199
30 sec
Q.
Where would a psychrophile most likely be found?
200
30 sec
Q.
Which of the following best describes a psychrophile's relationship with temperature?
201
30 sec
Q.
Which of the following best describes a mesophile?
202
30 sec
Q.
How do mesophiles compare to extremophiles in terms of temperature preference?
203
30 sec
Q.
What is Activation Energy in a chemical reaction?
204
30 sec
Q.
What role does activation energy play in a chemical reaction?
205
30 sec
Q.
How does an increase in activation energy affect the rate of a chemical reaction?
206
30 sec
Q.
What factors can affect the activation energy of a chemical reaction?
207
30 sec
Q.
How does a catalyst affect the activation energy of a chemical reaction?
208
30 sec
Q.
What is the difference between Conjugation and Transformation?
209
30 sec
Q.
What is the difference between Innate Immunity and Adaptive Immunity?
210
30 sec
Q.
What is the difference between Conjugation and Transformation?
211
30 sec
Q.
212
30 sec
Q.
What is the process through which genetic material is transferred from an Hfr cell to an F- cell?
213
30 sec
Q.
Which cell type is more likely to transfer genes to another bacterial cell during conjugation: an Hfr cell or an F+ cell?
214
30 sec
Q.
What is the key difference between DNA replication and transcription?
215
30 sec
Q.
What is a similarity between DNA replication and transcription?
216
30 sec
Q.
Where does DNA replication take place in eukaryotic cells?
217
30 sec
Q.
What is the primary end product of DNA replication?
218
30 sec
Q.
Which of the following accurately describes an inducible gene?
219
30 sec
Q.
What is a common inducer of inducible genes in bacteria?
220
30 sec
Q.
What is the role of an inducible gene in response to stress?
221
30 sec
Q.
What is the primary regulatory factor that controls the expression of inducible genes?
222
30 sec
Q.
What is the function of an inducible gene in the context of the immune response?
223
30 sec
Q.
What is a repressible gene?
224
30 sec
Q.
How does the presence of a repressor molecule affect the expression of a repressible gene?
225
30 sec
Q.
What is the function of the operator region in regulating a repressible gene?
226
30 sec
Q.
What is the primary mechanism through which repressible genes are regulated?
227
30 sec
Q.
Which of the following statements accurately describes the regulation of a repressible gene?
228
30 sec
Q.
In the context of gene regulation, what is the role of a repressor protein in a repressible gene system?
229
30 sec
Q.
Which of the following is NOT a component of an operon?
230
30 sec
Q.
What is the role of the operator in an operon?
231
30 sec
Q.
What is the function of the promoter in an operon?
