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Cardiovacular > Cell Introduction > Flashcards

Cell Introduction Flashcards

1
Q

Cell properties

A

Highly organized
Defined structure an function
Basic unit of life
Can be morphologically diverse
Reflectin wide ranging,spesific function

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2
Q

Cell general classification

A

Based on presence ob membrane around nuclear/ genetic material
Prokaryotes no defied nuclear bacteria
Eukaryotes (defined nuclear structure - plants lungi animal
Viruses: required host e bacteria in mail plant to livepreplicate

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3
Q

Cell principle

A

Most cell can replicate themself (exceptions- erythrocyte y platelets)
Acquire/ metabolize nutrients

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4
Q

What is cytosol

A

Water containing in organic ions and small organic molecules
70-80% of the weight of cell
Macro molecules (proteins, polysaccharides • lipids an DNA RNA) remaining. Weight of acell

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5
Q

What is Cytoplasm

A

Memi-solidi fluid
Defines all contents cytosol organelles of the cell and side the nucleus
And cytoplasmic membrane

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6
Q

Eukaryotic cell prokaryotic cell and viruses comparison

A

Eukaryoticell is bigger 210-100 um )
Prokaryotic cell medium 2
Virus smallest 50nm (bat not less complex behavior
Smaller cells canbe structurally simpler
Nutrients con diffuse more in smaller cells

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7
Q

General structure of eukaryotic cell

A

High organized
Similar sub cellular components such as organelles that define the define the individual cel suchas nucleus endoplasmic eretidum
Golgi mitochondria
Direct specific infractions which neighboring ocell
Extra cellular matrix

’

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8
Q

Res blood cell features

A

Discoid shape
Lack of nucleus
Facilities movement through blood vessels
Provide large surface area for exchange of oxygen and carbon
Dioxide
Stick to each other to form blooddlots

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9
Q

Epithelial cells

A

Some epithelial cells have microvili at one end
Giving the cell polarity
Increasing the surface area for absorption of nutrients

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10
Q

Chondrcytes cell

A

Found in cartilage
Embedded in thick extra cellular matrix of protein that hold water to provide fashioning, shock absorption

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11
Q

Why is the knowledge of structure of cell is impotent

A
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12
Q

DNA in eukaryotic cell the nucleus

A

DNA . Packaged into chromosomes
Whithin nuclear matrix (nucleoplasm
Most cell are diploid
Having two copies of the 23 chromosomes
DNA packaged with portions into super coiled structure
Chromatin to form individual chromosome
Contain the enzymes and portions for regulation of DNA

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13
Q

Nucleoli (ribosomes assembled)?

A

Several region of RNA and protein

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14
Q

What nucleoli is surrounded

A

A double membreme - the nuclear envelope and is contiguous with the.fr

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15
Q

Nuclear pores ? ( punctuate )

A

Facilitate movement of small molecules proteins and newly formed ribosomes

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16
Q

Typically single ovoid structure

A

Some cells have several nuclei (osteoclasts)
Have lobular nuclei (neutrophil)
Skeletal muscle cells can have many nuclei - multiple cells fuse during development to create a muscle libra

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17
Q

Endoplasmic reticulum?

A

Network of membrane fold (cisternae)
With A comment
Interconnected when that links to thenuclear membrane
Rough Er
Attached ribosome
Smooth Er
No attached ribosomes
Serves as a store of Ca2+ in muscle cells
Synthesis of lipids and steroids and detoxification of drug in liver cell
Prodien synthesized undergo post translational modification inside beforegolgy

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18
Q

Golly complex

A

Derived from Er
But not longer connected
Stack of flattened smooth membrane sacs and vesicles
Consist of 2 subunits large and small subunit
Eukaryote 80s ribosome 60s and 40s
Prokaryotes - zoo ribosome 50 S and 3OS
S = sved berg unit and sedimentation co– article that differ in mass shape density sediment at different velocities

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19
Q

Mitochondria?

A

‘has their own DNA

20
Q

Lysosomes?

A

Derived from Golgi complex
Contain various enzymes
Work in an acidic environment avoid pH 5.0

21
Q

Endosome?

A

Structures formed by pinching off part cytoplasmic membrane
Material like lipoproteins or foreign bodies are brought inside cell

22
Q

Phagosome?

A

Found in specialized cells (macrophages)and beak down foreign bodies
Bacteria are involve the cytoplasmicmembrameengulhing and pinching off inside the cell I
Creating a specialized micro environment within the cell where and reactive oxygen

23
Q

Peroxisome?

A

Result from defects in synthesis. Of some molecules that protect neurons and transporting some enzymes to the peroxisomein liver 9 kidney, brain cell

24
Q

Ribosome?

A

Site of protein synthesis
Consist of 2 subunits larg andsonall sub s . unit
Eukaryotes 80s ribosome (605and 40s
Prokaryotes- 70s ribsome(50sand 30s)

25
Q

Diseases that cause from abnormal function of organelles

A
26
Q

‘ribosome

A
27
Q

rRNA

A

Hold and interact to give the ribosome 3D structure

28
Q

Muscle cells

A

Have several specific protein fibers
Actin and myosin
With distinctive organization
Facilitate cellularhissue contratileforces

29
Q

Skeletal and cardiac tissue

A

Contractile libbers are arranged into prominent structure calledsarcomeres
Numerous sarcomeres pull along the length of the cell

30
Q

Smooth muscle

A

Have less defined sarcomeres
With the actin filament arranged obliquely within the cytoplasm and having defied anchor points in the cytoplasm(dense bodies
And cytoplasmic membrane - ‘(dense plaques)
Causing contraction in twisting manner

31
Q

Membrane

A

All cells are bounded by membrane
Formed by two phospholipid layers
Due to amphipathic properties form bilayer
Structure
Regulates movement of moleculeinto and out of the cell
Contact and interactions with neighboring lens
Extracellular environment depend on
Properties of the membrane - dynamic structure
Molecules embedded in oron the membrane
Intracellular organelles:bonded by membranes can be single or double) with similar general properties to the cytoplasmic membrane
Defined compartment within the cell enabling specific activities which in that environment
Structure

32
Q

What is the purpose un organelles

A
33
Q

A can you identify specific organelles in the cell and outlines their function

A
34
Q

Is the ribosome an organelle

A

No because it doesn’t have membrane

35
Q

Why is cell shape important and what helps define its shape

A
36
Q

Naked viruses

A

Capsid only
Includes papilla merirus polio, hepatitis A

37
Q

Envelope viruses

A

Capsid surrounded by lipid belayer or envelope derived from host cell membrane when it leaves the host the cell
Envelope contain viral proteins for targeting infecting specific cell types
Include: HIV influenza A and B - coronaviruses

38
Q

Outline the differences between mundane eakaredi and prokaryotic cell

A
39
Q

Can you describe the structural anatomy of viruses and give a named example for each

A
40
Q

By increasing in complexity in cell structure what happen the cell

A

Greater ranges in function
Specialization
Development of more complex multi cellular organisms

41
Q

Simplicity obstructuare properties

A

Ease of adaptability
Jacklyn respond to changes in environment

42
Q

Why undressing about the shape of thecell and organization and relative amount sub-cellular components is important

A

To understand the demands and and functions and specializations of the cell

43
Q

Complex of ribosomal RNA (rRNA) and ribose mealprodien

A

rRNA hold and interact to give the ribosome 3D structure

44
Q

S

A

Sued berg unit and is sedimentation co-effición. Articles that differ inmass shape and density sediment at different velocities

45
Q

Cytoplasmic membrane

A

Also known as
Plasma membrane
Marco lemma (muscle cells)
Plasmalemmo

46
Q

Prokaryotes ‘

A

Bacteria
DNA free in cytoplasm
Not surrounded by nuclear membrane usually In circular form called nuclei
Have smaller genome
Often single circular chromosome- haploid
More rapid replication and regulation of their DNA
Baked, extra-chromosomal DNA- plasmids
Ribosomes are smaller in prokaryotes
Within sub he differences in structure and biochemistry
Lack membrane bound intra-cellar organelles or vesicles
Electron transport chain(etc)protein located in cytoplasmic membrane
Etc in mitochondria in eukaryotes )
Most prokaryote never call wall composed distinctive molecules like peptidglycan
Important role in shop and structure and preventing osmolysis
Animal cell lack cell walls butsome eukaryotic
Do have cell walls such as plants cellulose
And fungi chitin and mannan
Some pro– form spores and
Can survive many years
Resistant to marry antimicrobial s
Major cause of infection

47
Q

Viruses

A

Grouped with micro-organisms
Sm all entities (20 - 300mm)that require a host to live
Supramolecular structure of nuclei acids protein and sometimes lipids carbohydrates
Isimple genomes but genetic organization varies among viruses can le doublestraded DNA single strand DNA RNA
Classification con be complex and basedon DNA or RNA
As viruses use a host cell of their replication their host cell missal

Cardiovacular (11 decks)

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