Test
cell stucture
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Preguntas del test (71)
1What is phylogeny?
- ADesent with modification
- BEvolutionary relationships among organisms
- CClassification of organisms and determining evolutionary relationships
2Which domain of life does mitochondria belong to?
- AEukayra
- BArcheaea
- CBacteria
3Which domain is most closely related to archaea
- Aviruses
- Bbacteria
- Ceukarya
4How many chromosomes do Prokaryotes have?
- A1
- Bmulitiple
5Which of the followings are common features in cells of all domains
- ACell membrane ,ribosome ,chromosome/sand cytosol (semi-fluid substance)
- BCytoplasm, centromeres, mitochondria and nucleus
- Cendoplasmic renticuluim, plasma membrane, Golgi apparatus and lysosomes
- Dnuclear enveolope, vesicles, vacuoles, chloropyll
6Eukaryotes.....
- AHave DNA enclosed in a membrane bound nucleus
- BAre small and less complex
- CAre large and more complex
- DHave no organelles
- EAre green
- FHave organelles
7DNA floats around in prokaryotes
- AVerdadero
- BFalso
8How many lipid bilayers do cell membranes have
- A1
- B2
- C3
- D4
9Which image best describes the cell membrane
- Acell count
- Bselective barrier
- Cfree passage
- Acell count
10O2 and CO2 pass freely through the membrane of a cell because they are substances which are...
- Apolar
- Bnon polar
- Cbi polar
- DSligthly negatively charged
- ESlightly positively charged
11Cholesterol is increases the fluidity of the phosplipid bilayer
- AVerdadero
- BFalso
12Which domain rRNA selection composed of 5s,16s,and 23s
- Aprokaryotes
- Beukaryotes
13Eukaryotes have ribosomes free just in the cytoplasm
- AVerdadero
- BFalso
14Eukaryotic DNA is linear and found within the nucleus
- AVerdadero
- BFalso
15What is the name of the complex of proteins and chromosomes
- Achromatin
- Bcentrosome
- Cchromatosin
16What is the name of the protein which holds the shape of the nucleus
- Anuclear lamina
- Bnuclear envelope
- Cchromatin
17Where is RNA synthesized?
- ANuclear pores
- BNucleous
- CChromatin
18Bacterial DNA is found in 2 locations
- AVerdadero
- BFalso
19Plasmids...
- Aare straight
- BContain genetic information
- CAre larger that the bacterial chromosome
- DAre smaller that the bacterial chromosome
- ECan exchange DNA between bacterial cells beneficial for antibiotic resistance
20Which systems and organelles are not found in animal cells that are found in plant cells
- Aribosomes
- Bchloroplasts
- Cmitochondrion
- Dmicrovilli
- Ecentral vacuole and tonoplast
- Fcell wall
- Gcentrsome
- Hplasmodesmata
21The cytoplasm doesn't contain organelles
- AVerdadero
- BFalso
22microfilaments are the largest fibers in the cytoskeleton
- AVerdadero
- BFalso
23What are the functions for the cytoskeleton
- AAnchor the organelles
- Buses ATP to move vesicles around the cells
- Cmake the cell bendy
- Dlink to one another to strenghten cell stucture
- ERegulate biochemical activites
24Mirco tubules are hollow
- AVerdadero
- BFalso
25what is the function of the microtubules
- Ashaping the cell
- Bmoving the whole cell
- CGuiding movement of organelles
- Dregulate cell temperature
- ESeparating chromosomes during cell division
- Fcontrol the beating of cilia and flagella
26The centrosome is made up of two centrioles
- AVerdadero
- BFalso
27The centrosome is a
- Amicrotubule-organizing center
- Bmicrotubule- diassembling center
- Cmicrotubule-destuction center
- Amicrotubule-organizing center
28Microfilaments are solid rods comprising a twisted double
chain of- A chtin subunits
- B actin subunits
- A chtin subunits
29the 3D cortex of the microfiliaments to change the cells shape
- AVerdadero
- BFalso
30bundles of the microfilament make up the core ore microvilli in the intestinal cells
- AVerdadero
- BFalso
31In muscle cells...
- AHundreds of actin filaments are arranged parallel to one another
- BThousands of actin filaments are arranged parallel to one another
- CMillions of actin filaments are arranged parallel to one another
32Myosin and ...... help in the movement of cells and are very important in muscles
- AActin
- BChitin
- CPhosphourous
33What are the functions of the intermediate filaments
- AMaintence of cell shape
- Bcytoplasmic streaming
- Cformation of nuclear lamina
- Danchorage of nucleus and other organelles
- Emuscle contaction
34What the difference between the smooth and rough endoplasmic reticulum
- Arough has ribsomes are located on the outside of the organelle
- Bthey are made up of different components
35smooth ER secretes glycoprotiens
- AVerdadero
- BFalso
36What are the functions of the smooth ER
- Asecrete glycoprotiens, distributes transport vesicles- proteins surrounded by a membrane
- Bsynthesizes lipids, metabolizes carbohydrates, deoxifies drugs and poisons, stores calcium ions
37which organelles make up the endomembrane sytstem
- ANuclear envelope
• Plasma membrane
• Endoplasmic reticulum
• Golgi apparatus
• Lysosomes
• Vacuoles - Bcell membrane
- ribosome
- chromosome/s
- cytosol (semi-fluid substance)
- ANuclear envelope
38The Golgi apparatus manufactures.....
- Amicromolecules
- Bphospolipids
- Cmacromolecules
- Dnucleic aids
39what is the name of the process where Vesicles leave golgi and may fuse with plasma membrane to
secrete contents- Aexocytosis
- Beutytropic
- Csterotropic
- Dcytokensis
40lysomes are sacs of ...... enzymes which can digest macromolecules (proteins, fats,
polysaccharides, nucleic acids- Asulpuric
- Bhydrolytic
- Cnitrite
41what is the name given when a cell engulfs another
- Aautophagy
- Bphagocytosis
- Ccytokenisis
42 autophagy is the process where lysomes
- A Use enzymes to recycle the cell’s own organelles and macromolecules
- Bfuse with the food vacuole and digests the molecules
- CManufactures certain macromolecules
43The vacuole contains, oxygen, carbon and chlorophyll
- AVerdadero
- BFalso
44both eukaryotes and prokaryotes have mitochondria
- AVerdadero
- BFalso
45Mitochondria is where...
- Astarch is converted into glucose
- Bcelluar respiration through the generation of ATP
- Cnutrients passes through the nuclear envelope
46What is the name for the double membrane: a smooth outer membrane and an inner membrane folded
- ACristae
- Bperoxisome
- Cmedula
47mitochondria have their own ribosomes and DNA
- AVerdadero
- BFalso
48Chlorophyll contain chloroplast
- AVerdadero
- BFalso
49Most cells synthesize and secrete materials that are external to the plasma membrane
- AVerdadero
- BFalso
50The cell walls of Fungi are made of
- AChitin
- Bcellulose
- Cstarch
51which of the following are is NOT in the extra cellular matrix of animal cells
- Acollegen
- Bactin
- Cproteoglycans
- Dfibronectin
52 he extracellular matrix bind to the receptor proteins in the plasma membrane called integrins
- AVerdadero
- BFalso
53 Which 2 of the following are NOT functions of the ECM
- ASupport
- BFlexibility
- CAdhesion
- DMovement
- Efixed postioning
- Fregulation
- ASupport
54Which of the following is a plant cell junction
- AGap junctions
- BPlasmodesmata:
- C•Desmosomes
- DTight junctions
55prokaryotes have organelles
- AVerdadero
- BFalso
56which of the following are found inside a microbial cells
- ACytoplams
- BCentrsomes
- CFlagella
- DPili
- EMitochondria
- FCapsule/slime layer
- GCytoplasmic membrane and Cell wall
57Magnetosomes are magnetic enclusions in cells allow
- Amicroogramism move around magnetic lines
- Bhelp the cell wall stay in place
- Cremove unwanted information from the cell
58Gas vesicles sink in prokaryotic cells
- AVerdadero
- BFalso
59Gas vesicle are bouyant as it allows the microograsims to move up and down o the cytoplasm allowing for optimum light absorption. As some microorganisms photosynthesis
- AVerdadero
- BFalso
60Prokaryotes produce spores for reporduction
- AVerdadero
- BFalso
61Which of the following isnt a factor for the dispersal of spore in hardy environment soil
- Apoluten
- Brainfall increases or decreases
- Chigh acidity
- Dtemperature drop
- Enurtrient level falls
62The composition of peptidoglycan in bacteria is..
- AG+ve cells have ~ 70
G-ve cells have ~ 30 - BG+ve cells have ~ 50
G-ve cells have ~50 - CG+ve cells have ~90
G-ve cells have ~ 10
- AG+ve cells have ~ 70
63antibiotic drugs target the cell walls of bacteria, which one is easiest to destoy
- AGram +
- BGram -
64Capsule/slime layers.....
- Ato stick cells together and as a food reserve
- Bto protect the cell from desiccation, and from chemicals
- Cincrease the number of cells being produced
- Dstop the cells sticking together and dry out the cell
65the movement of flagella is based on
- Aproton motor force
- BATP release
- Cmetabolism of glucose
66to benefit cellular exchange bacterial will have
- Apili
- Bfimbriae
67what do Archaea and eukarya have in common but not bacteria
- Aflagella
- Bhistomes
- Cgas vesicle
- Dendospores
- Esensitivity antibiotics
68Acheae are the highest tolerating domain
- AVerdadero
- BFalso
69Endosymbiont theory is the idea that Mitochondria and chloroplasts took up residence in Eukarya eons ago
- First a non-photosynthetic prokaryote formed an endosymbiont relationship with a host - Subsequently, a photosynthetic prokaryote was engulfed Result = a single organism- AVerdadero
- BFalso
70what would you NOT consider to define life?
- Aorder/organisation
- Breproduction
- Cresponse to environment
- Denergy utilisation and production (metabolism)
- Ehomeostasis
- F evolution
- Grespiration
- Hbeing complety reliant on from others
71what is a virus
- Apiece of DNA or RNA covered in a protein coat
- Ba nucleus with a cell wall and mitochondria
Información
- Descripción
- main focuses The structure and function of membranes (introduction) • Phylogeny (introduction) • The divisions of life • Differences between plant, animal and microbial cells • What is an organelle • Endosymbiont theory
- Autor
- michelle_simms_w
- Idioma
- English
- Visitas
- 85
- Valoración
- Aún sin valoraciones Valora este test