Test
Prokaryotes
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Preguntas del test (30)
1What is the name of the circular DNA structure which some prokaryotic cells possess?
- AChromosomes
- BPlasmids
- CRibosomes
- DMitochondria
2Select the true characteristic of prokaryotic cells
- AReproduce by binary fission
- BHave membrane bound organelles
- CThey do not have cell walls
- DThey have fixed shapes
3What shape are most bacteria?
- AMonomorphic
- BPleomorphic
- CAfromorphic
- DLentercenid
4Select the disease which is caused by a vibrio shaped bacteria
- AHIV
- BTuberculosis
- CMRSA
- DCholera
5What are the two subunits which make up as 70s Ribosome?
- A60s and 20s
- B20s and 50s
- C30s and 40s
- D30s and 50s
6What does the glycocalyx allows the cells to do?
- AAllows attachment to other cells
- BAllows cells to divide
- CAllows cells to carry out protein synthesis
- DAllows bacterial cells to produce plasmids
7How do capsules prevent phagocytosis?
- AThe capsules release a toxin which deters the white blood cells from the bacteria
- BThe capsule kills white blood cells
- CWhite blood cells cannot recognize pathogen as the capsule is covering antigens
- DWhite blood cells cannot break down capsules
8How is the flagellum attached to a prokaryotic cell?
- AProtein hook
- BChains of flagellin
- CBasal body
- DDNA ligase
9Select the correct word for this definition: 'Flagella found at each cell end.'
- APeritrichous
- BAmphitrichous
- CMonotrichous
- DLophotrichous
10What do bacteria use to transfer substances from one cell to another?
- APilli
- BFlagella
- CPlasmids
- DFimbriae
11Which type of bacteria grow at moderate temperatures?
- AMesophilic Bacteria
- BThermophilic Bacteria
- CHalophilic Bacteria
- DPsychrophilic Bacteria
12Prokaryotic cell reactions are
- Acompartmentalized
- Bnot compartmentalized
- Cin membrane bound organelles
13Select the categories where there are differences between bacteria and archaea
- Aplasma membrane structure
- Bcell wall structure
- CDNA replication
- DGene expression
- EPilli
- FFlagella
14Select the function which is one of the functions of an S-layer
- ATrap molecule close to the cell surface
- BDestroy pathogens which enter the cell
- CInvolved in protein synthesis
- DForms a link between cells to allow transfer of substances
15Why do gram-negative bacteria not retain the purple dye during gram staining
- AThere cell walls recognize the purple dye as a pathogen and destroy it
- BThey have more peptidoglycan in their cell wall
- CThey react to the purple dye
- DThey have less peptidoglycan in their cell wall
16When do endospores form for Prokaryotes?
- ADuring cell division
- BDuring cell death
- CDuring environmental stress
- DDuring changes in the bacteria's structure
17Select the advantage of membrane folds
- AIncreases cell strength
- BIncreases surface area
- CDecreases cell infection chances
18How is DNA incorporated into the bacterial DNA during generalized transduction?
- AHomologous recombination
- BHomologous formation
- CFormative cell collusion
19Specialized transduction is limited to page that exhibit________
- Amitosis
- Blysogenic life cycle
- Cmeiosis
- Dnone of the above
20What is the pilus called in the F-plasmid transfer?
- Aconjugation bridge
- Bconjugation cross over
- Cconjugation ladder
- Dtransfer tube
21What do chemoorganoheterotrophs use as sources of carbon, electrons and energy from?
- ACarbon made by consumer organisms
- BNitrogen from the earth
- CCarbon made by producer organisms
- DOxygen made by producer organisms
22The main difference between prokaryotes and eukaryotes is that eukaryotic, but not prokaryotic cells
- Apossess cell walls
- Bpossess membrane bound organelles
- Cpossess ribosomes
- Dpossess a cell membrane
23A bacteria that obtains carbon from the atmosphere and energy and electrons from reduced inorganic compounds is best characterized as a________
- Achemlithoautotroph
- Bchemorganoheterotrophs
- Cchemohetetroph
- Dphotolithoautotrophs
24Gram-positive and gram negative bacteria are distinguished based on differences in their
- Acell wall: gram positives have peptidoglycan, whereas gram negatives have pseudo-peptidoglycan
- Bthe plasma membrane: Gram positives have ester linked lipids whereas gram negatives have ether linked lipids
- Cchromosomal structure: gram positive have circular chromosomes whereas gram negative have linear chromosomes
- Dcell wall: gram positives have a thick layer of peptidoglycan, whereas gram-negatives have a thin layer
25Bacteria and archaebacteria may be distinguished based on_______
- Acell membrane structure and chemistry
- Bthe type of nucleic acid used as genetic material
- Cthe presence and absence of organelles
- Dsize
26The transfer of very specific genes from one bacterium to another by virus is called
- Ageneralized transduction
- Bconjugation
- Cnatural transduction
- Dspecialized transduction
27Tuberculosis is caused by a
- Abacterium
- Barchaebacterium
- Cvirus
- Dprotist
- ETOO MUCH REVISION FOR A TCA :(
28During respiration, bacteria can use a greater diversity of electron_______ and _________ than can eukaryotes
- Aoxidizers; reducers
- Bdonors; reducers
- Cdonors; acceptors
- Doxidizers; acceptors
29Which of the following structures is unique to prokaryotes?
- Apili
- Bflagella
- Ccell wall
- Dspores
30WHO IS GOING TO SMASH THIS TCA?
COME ON GUYS LETS DO THIS!!!!!!!!!!!- ARHYS HAINES, GRACE KIDMAN AND RAUL LOBO
- B-
Información
- Descripción
- Test sobre Prokaryotes , creado por Raul Lobo el 18/01/2021.
- Autor
- Raul Lobo
- Idioma
- English
- Visitas
- 2
- Valoración
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