CELL Flashcards

(63 cards)

1
Q

All organisms are made out of this, simplest collection of alive matter, related to their descent, can differ from one to another

A

Cell

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2
Q

Light passes through a specimen, then to glass lenses in order to refract light and magnify the image (1000x)

A

Light microscope

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3
Q

Types of electron microscope

A

Scanning, transmission

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4
Q

Used to view subcellular structures

A

Electron microscope

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5
Q

The type of electron microscope used to view the surface of the specimen, 3d image

A

Scanning electron microscope

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6
Q

The type of electron microscope to view internal structures

A

Transmission electron microscope

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7
Q

Take cells apart and separate the major organelles from one to another and enables scientists to determine their function

A

Cell fractionation

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8
Q

Cell fractionation process

A

Suspension
Centrifuge
Aspirate

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9
Q

Basic features of a cell

A

Plasma membrane, semifluid substance (cytosol), chromosomes, ribosomes

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10
Q

No nucleus, dna is found at the nucleoid, no membrane bound organelles, cytoplasm bound by plasma membrane

A

Prokaryotic cells

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11
Q

Dna is in a membranous nuclear envelope, membrane bound organelles, has cytoplasm and cytosol

A

Eukaryotic cells

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12
Q

Selective barrier that allows a sufficient passage of oxygen, nutrients and waste to service the volume of every cell

A

Plasma membrane

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13
Q

Parts of the phospholipid bilayer

A

Hydrophobic lipids
Hydrophilic phosphorus heads

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14
Q

Information central, connected to the er and the most conspicuous organelle.

A

Nucleus

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15
Q

Encloses the nucleus, separates the nucleus from the cytoplasm

A

Nuclear envelope

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16
Q

Located in the nucleus, may vary in numbers, site of ribosomal RNA synthesis.
Has pores that regulate the entry and exit of molecules from the nucleus

A

Nucleolus

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17
Q

Composed of proteins that maintains nucleus shape

A

Nuclear lamina

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18
Q

Protein factories, made out of ribosomal RNA and protein, 2 locations of synthesis

A

Ribosomes

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19
Q

Site of synthesis of free ribosomes

A

Cytosol

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20
Q

Site of synthesis of bound ribosomes

A

ER and nuclear envelope

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21
Q

requires protein traffic and performs metabolic functions in the cell

A

Endomembrane system

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22
Q

Endomembrane system organelles

A

nuclear membrane, endoplasmic reticulum, golgi apparatus, lysosomes, vacuoles, plasma membrane

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23
Q

biosynthetic factory, more than half of the total membrane in many eukaryotic cells. continuous with nuclear envelope.

A

Endoplasmic reticulum

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24
Q

synthesizes lipids, metabolizes carbohydrates, detoxifies, stores calcium ions.

A

SMOOTH ER

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25
have bound ribosomes and secretes glycoproteins, distributes transport vesicles, membrane factory
ROUGH ER
26
secretory proteins surrounded by membranes
transport vesicle
27
shipping/receiving center of the cell, modifies products of ER, manufactures certain macromolecules. Sorts/ packages materials into transport vesicles.
golgi apparatus
28
flattened membranous sacs of the golgi apparatus
cisternae
29
receiving stage of the golgi apparatus
Cis face
30
shipping stage of the golgi apparatus
Trans Face
31
digestive compartments of the cells
Lysosomes
32
membranous sacs of hydrolyzed enzymes that can digest macromolecules. shares the food
Lysosomes
33
makes the acidic environment for the lysosomes
lysosomal enzymes
34
enzymes made by the rough endoplasmic reticulum
hydrolytic and lysosomal enzymes
35
Lysosome's way of digesting food
Phagocytosis
36
diverse maintenance compartments, large vesicles derived from ER and Golgi apparatus
Vacuoles
37
Types of Vacuoles
food vacuole contractile vacuole central vacuole
38
for phagocytosis
food vacuole
39
used by fresh water protists to pump out water from the cell
contractile vacuole
40
native to plants, hold organic compounds and water
central vacuole
41
two organelles tat change energy from one from to another. double membraned, contain free ribos
mitochondria and chloroplast
42
cellular respiration site and uses oxygen to generate atp
mitochondria
43
plants/algae, sites of photosynthesis
chloroplast
44
this is where an early ancestor of eukaryotes engulfed oxygen using non-photosynthetic prokaryotic cells, it evolved to have a mitochondria. it later engulfed a photosynthetic prokaryote which later evolved to have a chloroplast
endosymbiont theory
45
chemical energy conversion, smooth outer membrane
Mitochondria
46
folded inner membrane, intermembrane space, mitochondrial matrix that has free ribosomes
cristae
47
specialized metabolic compartments, produces hydrogen peroxide and convert to water, relation with other organelles is still unknown
peroxisomes
48
network of fibers that organizes structures and activities in the cell. Help support the stages of the cell. help support and maintain the shapes of the cell.
cytoskeleton
49
thickest of the 3 types of cytoskeleton, hollow tubes, maintains the cell shape, cell motility, chromosome movement in cell division, organelle movement.
Microtubules
50
The centrosome has a pair of centrioles. Each with 9 triplets of _____ arranged in a ring
Microtubules
51
Under Microtubules, microtubules control its beating. microtubule-containing extensions that project from some cells
Cilia and flagella
52
motion of flagella
straight line
53
motion of Cilia
uses power stoke and recovery strokes
54
A motor protein, which drives the bending movements of a cilium or flagellum
dynein
55
How dynein "walking" moves cilia and flagella?
Dynein arms alternately grab, move, and release the outer microtubules Protein cross-links limit sliding Forces exerted by dynein arms cause doublets to curve, bending the cilium or flagellum
56
A type of microtubules Actin filaments and the Thinnest. It helps with the Maintenance of cell shape and Changes in cell shape. Muscle contraction and Cell motility. aids in Division of animal cells
Microfilaments
57
A type of microtubules Fibers with diameters in a middle range. Fibrous proteins coiled into cables Helps in the Maintenance of cell shape. Anchorage of nucleus and some other organelles. Formation of nuclear lamina
Intermediate filaments
58
Animal cells lack cell walls but are covered by an elaborate structure made up of glycoproteins such as collagen, proteoglycans, and fibronectin
Extracellular Matrix of animal cells
59
proteins bind to receptor proteins in the plasma membrane
integrins
60
types of Cell Junctions
Tight Junctions, Desmosomes, Gap Junctions
61
Member of neighboring cells are pressed together, preventing leakage of extracellular fluid
Tight Junctions
62
"anchoring junctions" Fasten cells together into strong sheets
Desmosomes
63
"communicating junctions" Provide cytoplasmic channels between adjacent cells
Gap Junctions