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Exam 3 Review Flashcards | StudBud
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Exam 3 Review
Exam 3 Review
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Practice quiz
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Questions
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Answers
1
Phototrophs are also autotrophs
True
False
2
What came most recently?
anoxygenic phototrophs
aerobes
oxygenic phototrophs
anaerobes
3
What is not a feature common to all archaea?
lack of peptidoglycan in their cell walls
ether-linked lipids
complex RNA polymerases, similar to eukaryotes
live in extreme environments
4
Natural selection is determined by evolutionary fitness
True
False
5
What is an example of a primary endosymbiont?
mitochondrion
chloroplast
red algae
green algae
6
Which microbial characteristic is key for attachment onto host tissues?
fimbriae
capsules
pili
cisternae
7
Which is an assimilative process?
CO2 fixation
glycolysis
8
Dysbiosis of the gut microbiome is linked to many diseases
False
True
9
Which type of virus lyses the cell shortly after infection?
virulent
lysogenic
10
Which pathway is used by autotrophs?
3-hydroxypropionate bi-cycle
reductive tricarboxylic acid cycle
calvin cycle
reductive acetyl-coenzyme A pathway
11
Which came first?
Archaea
Eukaryotes
Bacteria
12
Which cell surface attachment is found in bacteria but not eukaryotes?
pili
flagella
fimbriae
13
Which group of microbial predators swarm and lyse their prey?
social
epibiotic
cytoplasmic
periplasmic
14
Which classes of viruses use RNA?
6
7
4
2
15
The animal kingdom represents the most abundant eukaryotic kingdom
True
False
16
Which mutations are most commonly incorporated into the genome?
neutral
deleterious
beneficial
17
The gene used in phylogenetic analyses is associated with which cellular machine?
ribosome
RNA polymerase
DNA polymerase
topoisomerase
18
What is the third step of virus replication?
synthesis
assembly
penetration
attachment
19
Which is written correctly?
Staphylococcus Aureus
yersinia Pestis
Pseudomonas aeruginosa
Escherichia coli
20
The Serial Endosymbiosis Theory states that the nucleus formed before endosymbiosis of a respiring bacteria.
False
True
21
Which of the following is not a genus?
Trichomonas
Giardia
Trypanosoma
Excavates
22
"evolutionary history of related DNA sequences" relates best to which term?
ecological diversity
phylogenetic diversity
metabolic diversity
phenotypic diversity
23
Which homologs have the same function?
paralogs
orthologs
24
What came first?
sugars
protein
DNA
RNA
25
What do chloroplasts and mitochondria not have in common?
present in eukaryotes
produce ATP
thylakoids
circular genomes
26
Which metabolic principle is not held in common for all microbes?
achieve redox balance
energy is conserved
need reducing power
convert chemical energy to ATP
27
What is false about Synechococcus?
contain gas vesicles to position themselves in ideal light intensity
is a genus of cyanobacteria
form heterocysts to fix nitrogen
has swimming motility without an extracellular organelle
28
Which symbiosis benefits just one of the organisms involved while not helping or harming the other?
parasitism
commensalism
mutualism
syntrophy
29
What is a feature that is unique to cyanobacteria?
contain chlorophyll
uses the calvin cycle
have both Fe-S and Q-type photosystems
30
Antibiotics do not affect the human microbiome
False
True
31
Which element from the mobilome is the largest?
transposons
insertion sequences
integrons
plasmons
32
Most disease vectors belong to which phylum?
nematoda
arthropoda
echinodermata
annelida
33
Which organisms do not contain chlorophyll?
plants
cyanobacteria
sulfur bacteria
algae
34
secondary symbionts must confer some advantage to the host
True
False
35
All phototrophic microorganisms contain chloroplasts
False
True
36
Loss of function mutations are not advantageous
False
True
37
Approximately how many microbes are in the humanmicrobiome living in complex communities?
1011
1025
103
1013
38
match the disease with the disease-carrying vector
yellow fever- fleas
typhus- mosquitos
plague- head louse
spotted fever- ticks
39
Which of the following does not support the endosymbiotic theory?
Both contain 16S rRNA
Both contain a cell wall
chloroplasts and mitochondria are similar in size to bacteria
mitochondria and chloroplasts both contain circular DNA genomes
40
The mechanism of transfer of T-DNA to the plant cell by Agrobacterium tumefaciens most resembles which form of HGT?
transduction
conjugation
transformation
translation
41
Most fungi are unicellular
True
False
42
Which genus of nitrogen-fixing bacteria is most well known for the legume-root nodule symbiosis?
acetobacter
epithemia
rhizobium
azotobacter
