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Histology > The Cell (PPT based) Part II > Flashcards

The Cell (PPT based) Part II Flashcards

1
Q

7.5 nm thick and composed of a lipid bilayer and associated proteins

A

PLASMA MEMBRANE

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2
Q

envelopes the cell

A

PLASMA MEMBRANE

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3
Q

aids in maintaining its structural and functional integrity

A

PLASMA MEMBRANE

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4
Q

functions as a semi-permeable membrane between the cytoplasm and the external environment

A

PLASMA MEMBRANE

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5
Q

sensory device

A

PLASMA MEMBRANE

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6
Q

recognize other cells and macromolecules

A

PLASMA MEMBRANE

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7
Q

composed of an inner leaflet (facing the cytoplasm) and an outer leaflet (facing the extracellular environment)

A

PLASMA MEMBRANE

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8
Q

exhibits a trilaminar structure (called the unit membrane)

A

PLASMA MEMBRANE

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9
Q

performs special processes like: phagocytosis, pinocytosis, exocytosis

A

PLASMA MEMBRANE

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10
Q

composed of phospholipids, glycolipids and cholesterol

A

Lipid bilayer

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11
Q

12 nm wide and 25 nm long

A

RIBOSOMES/ Palade granules

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12
Q

consist of a small and large subunit composed of several types of RNA

A

RIBOSOMES/ Palade granules

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13
Q

may be:
free in the cytosol

A

RIBOSOMES/ Palade granules

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14
Q

may be:
bound to membranes of the
*rough endoplasmic reticulum
*outer nuclear membrane

A

RIBOSOMES/ Palade granules

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15
Q

may be:
actual sites of protein synthesis

A

RIBOSOMES/ Palade granules

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16
Q

may be:
responsible for the basophilic staining of the cytoplasm

A

RIBOSOMES/ Palade granules

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17
Q

site where non-cytosolic proteins are synthesized

A

ROUGH ENDOPLASMIC RETICULUM (RER)

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18
Q

ROUGH ENDOPLASMIC RETICULUM (RER):
site where non-cytosolic proteins are synthesized are:

A

Secretory
Plasma membrane
Lysosomal

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19
Q

provide an area of storage and transport of proteins

A

ROUGH ENDOPLASMIC RETICULUM (RER)

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20
Q

irregular network of membrane bounded channels that lack ribosomes on its surface appearing smooth

A

SMOOTH ENDOPLASMIC RETICULUM/Agranular endoplasmic reticulum

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21
Q

appears as branching anastomosing tubules or vesicles membranes

A

SMOOTH ENDOPLASMIC RETICULUM/Agranular endoplasmic reticulum

22
Q

less common than RER

A

SMOOTH ENDOPLASMIC RETICULUM/Agranular endoplasmic reticulum

23
Q

predominates in cells synthesizing steroids, triglycerides and cholesterol

A

SMOOTH ENDOPLASMIC RETICULUM/Agranular endoplasmic reticulum

24
Q

SMOOTH ENDOPLASMIC RETICULUM serves different functions in different cell types:

A

steroid hormones and lipid synthesis
drug detoxification (liver)
muscle contraction and relaxation

25
Q

parallel stacks of membranes (6-10) located near the nucleus

A

ANNULATE LAMELLAE

26
Q

resemble the nuclear envelope, including its pore complexes

A

ANNULATE LAMELLAE

27
Q

are continuous with the RER

A

ANNULATE LAMELLAE

28
Q

are found in rapidly growing cells (germ cells, embroyonic cells, tumor cells)

A

ANNULATE LAMELLAE

29
Q

are found in rapidly growing cells (germ cells, embroyonic cells, tumor cells)

A

ANNULATE LAMELLAE

30
Q

rod-shaped organelles [0.2 µm (W) – 7 µm (L)] double layered sac

A

MITOCHONDRIA

31
Q

possess an outer smooth membrane and an inner membrane, which invaginates to form cristae

A

MITOCHONDRIA

32
Q

important in energy metabolism

A

MITOCHONDRIA

33
Q

as major source of adenosine triphosphate (ATP)

A

MITOCHONDRIA

34
Q

site of many metabolic reaction

A

MITOCHONDRIA

35
Q

subdivided into an intermembrane compartment and an inner matrix compartment

A

MITOCHONDRIA

36
Q

contain granules within the matrix that bind the divalent cations Mg+2 and Ca+2

A

MITOCHONDRIA

37
Q

contain all of the enzymes of the krebs (TCA) cycle

A

MITOCHONDRIA

38
Q

consists of disk-shaped cisternae (saccules) arranged in a stack

A

GOLGI COMPLEX (apparatus)

39
Q

pale area near the nucleus

A

GOLGI COMPLEX (apparatus)

40
Q

processing of non-cytosolic proteins synthesized in the RER

A

GOLGI COMPLEX (apparatus)

41
Q

membrane retrieval, recycling and redistribution(renewal of cell membrane)

A

GOLGI COMPLEX (apparatus)

42
Q

characterized by a visible cytoplasmic surface coat

A

COATED VESICLES

43
Q

2 varieties of Coated Vesicles:

A

clathrin-coated vesicles
clathrin

44
Q

3 large and 3 small polypeptide chains that form a triskelion (3 legged structure)

A

formed during endocytosis
associated with signal-directed transport
non-clathrin-coated vesicles
involved in the transport of proteins
from RER to golgi,
one golgi cisterna to another
golgi complex to plasma membrane
associated with constitutive protein transport

45
Q

dark staining body containing hydrolytic enzymes

A

LYSOSOMES

46
Q

essential for intracellular digestion

A

LYSOSOMES

47
Q

Types of lysosomes:

A

Multivesicular bodies/endosomes
Phagolysosomes/phagosomes + lysosomes
Auto-phagolysosomes
Residual bodies

48
Q

also known as microbodies

A

PEROXISOMES

49
Q

membrane-bound, ovoid

A

PEROXISOMES

50
Q

has oxidative enzyme for the breakdown of hydrogen peroxide and alcohol

A

PEROXISOMES

Histology (37 decks)

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