cytology questions Flashcards
(134 cards)
1
Q
Which of the following is not included in the glycocalyx?
A
steroids
2
Q
Organelles involved in rectory pathway?
A
All are true except peroxisomes
3
Q
Electrically excited cells are?
A
All are true except adipocytes.
4
Q
Which substances are detected by periodic acid shift PAS staining method?
A
Glycolipids & Glycoproteins
5
Q
Which of the following are inorganic compounds of the cell?
A
water
6
Q
Microtubules..which of the following statement is true?
A
Have a wall composed of 13 protofilament.
7
Q
Which of the following statements regarding lysosomes is true?
A
Optimal pH is 5.0
8
Q
The middle segment of chromosomes is known as
A
centromere
9
Q
. All of the following cell junctions are associated with the cytoskeleton except
A
nexus(gap) junctions
10
Q
. Synaptical vesicles..are all true except?
A
Do not have a membrane.
11
Q
Cytoskeleton motor proteins are..all are true except
A
Vimentin
12
Q
The division of the nucleus is reffered to as
A
Mitosis
13
Q
Where the fibres of the nuclear lamina localised?
A
Just inside the inner nuclear membrane
14
Q
Which of the following regarding cell shape is not true
A
Smooth muscle cells are cuboidal cells
15
Q
Integrins are..all are true except
A
Intermediate filament receptors.
16
Q
All of the following structures contain microtubules except
A
Microvilli
17
Q
. All of the following are cell to cell junctions except
A
hemidesmosome
18
Q
Which statement regarding peroxisomes is true
A
Peroxisomes are generated from pre-existing peroxisomes.
19
Q
Secretory granules..all are true except
A
Are returned to the Rough ER for recycling
20
Q
Which is the range of thickness of the biological membranes?
A
5-10µm
21
Q
F-actin is found in
A
microfilaments
22
Q
Components of the nuclear envelope..all are true except
A
chromatin
23
Q
Which of the following statements related to the Golgi Complex is not true?
A
? It is a semi autonomous organelle that contains DNA, RNA & Ribosomes.
24
Q
Autophagosomes are typical for
A
lymphocytes
25
The cytosol..which of the following statements is not true
Contains ions and small proteins
26
Intermediate filaments are composed of
keratin
27
Synaptic vesicles..all are true except?
Use microtubules for their movement
28
Smooth ER is not involved in
Protein synthesis
29
Ribosomes can attach to which of the following?
Outer nuclear membrane
30
Ca2+ release from the endoplasmic reticulum takes place via
Voltage sensitive Ca2+ channels
31
Extracellular proteins such as hormones achieve their effect on the cells by the means of
Transmembrane receptors
32
Secretory proteins..all are true except?
Are translocated into the nucleus.
33
Which of the cells have a prominent rough ER?
Adrenal gland cells.
34
The parts of DNA which are not exposed are concentrated in..?
Heterochromatin
35
. Amino-oxidase and catalase are characteristic enzymes of..?
peroxisomes
36
. Microtubules..all are true except?
Are the thick filaments of the sarcomere
37
Intermediate filaments are associated with which of the following cell junctions
desmosomes
38
. Organelle included in the secretory pathway..All are true except
peroxisomes
39
Which of the following is not a component of the plasma membrane?
nucleic acids
40
Which of the following substance is not a component of the biomembrane?
melanin
41
Microfilaments
Consist of globular actin monomers forming a double helix
42
Which of the following of the cell matrix function is true?
Regulates intracellular traffic of the molecule
43
Which of the following statements regarding the Golgi Complex is true?
It is the site of protein glycosylation
44
Intracellular targeting of vesicles depends on?
Snare-Snare Interactions
45
The Barr-body corresponds to?
Heterochoromatin
46
Integrins
Link the Extracellular Matrix with the Cytoskeleton
47
The chromatin contains the following elements..All are true except
RNA
48
Microtubules..all are true except
Associate with myosin
49
Major mitochondrial compartments are..All are true except
mitochondrial pores
50
Which of the following is not a characteristic of living matter?
refraction
51
Tissues grow in site because of the following processes..All are true except
apoptosis
52
Ageing is associated with which type of processes..All are true except
hyperplasia
53
The main molecular railroads for intracellular transport are
microtubules
54
Biological membranes..Which of the following is not true?
Organise the mitotic spindle during cell division
55
Which of the following statements about cell matrix functions are true?
It regulates intracellular traffic of molecules and organelles.
56
The cytoplasmic inclusions
all answers are correct
57
Ribosomes are..All are true except
related in function to lipid synthesis
58
Apoptosis is..All are true except
A spontaneous process.
59
Cell crystals
Crystalline forms of protein
60
Which family of proteins are excretions of apoptosis?
capsases
61
Which of the following statements related to histological techniques is not true?
Paraffin embedding includes processing of the material
62
Which of the following about eukaryotic/prokaryotic cells is not true?
Prokaryotic cells are cells with a nuclear envelope
63
All of the following statements regarding pigment deposits are true except?
globin is a pigment
64
Movement of which type of particle is involved in the generation of ATP?
proton
65
Signal recognition particle/SR receptors are required for the translocation of
secretory proteins
66
Cells participating in closing the wound
myofibroblast
67
Which cell type has a squamous shape
endothelial cells
68
Which of the following statements about plasmalemma is true?
Ion channels are transmembrane proteins.
69
Which of the following membrane proteins are not localised in the plasma membrane?
histone molecules
70
Which of the cell types have more than one nucleus? All are true except
Neutrophil Leukocytes
71
Which of the following statements about lysosomes is not true
Optimal pH of lysosomal digestion is pH 8.0
72
Which of the following molecules are material carrier of life?
Protein & Nucleic acids
73
Golgi Complex-RER communication requires
COP coated vesicles
74
Clathrin coated vesicles are formed in
transgolgi network
75
The change of cell shape requires which following organelles
actin filaments
76
Which is the size range for peroxisomes?
0.5-1.5mm
77
Which of the cytoskeletal proteins is components of nuclear lamina?
intermediate filaments
78
Secretory proteins
Are not translocated into the RER
79
Which type of molecules can pass through the nuclear pore?
Molecules with a nuclear localisation signal
80
Which phase of the mitotic cycle is mediated by actin cytoskeleton?
cytokenesis
81
Which of the following does not belong to cytoplasmic inclusions?
secretory vesicles
82
The Zelwegger syndrome is related to biogenesis of which organelle?
peroxisomes
83
Which of the following statements regarding the structure of biomembranes is true?
Biomembranes are supermolecular lipoprotein complexes composes of polar lipids and proteins
84
The process of apoptosis normally occurs
during mitotic cell death
85
Secretory granules are characteristic for
exocrine cells
86
Mitochondrial ATP synthase is involved in
oxidative phosphorylation
87
What is the main function of the intermediate filaments?
structural stability of the cell
88
Which of the following are non membranous?
microtubules
89
Which of the following statement about the cell theory is not true?
There is no close relationship between cell structure and function
90
Which of the following is a market enzyme for lysosomes?
Acid phosphitase
91
.Components of the mitotic spindle are, all true except
actin filaments
92
Ribosomes can attach to which of the following
outer nuclear membrane
93
Which of the following statements is not true?
Proteins contain glycerol, fatty acids and ATP
94
Which of the following structures (centriole) is true?
Each centriole is composed of 9 microtubule triplets and 0 in the centre
95
Which of the following increases surface area necessary for absorption?
microvilli
96
Which of the following about the plasma membrane is not true?
It maintains the negative charge of the cell surface.
97
Free poly-ribosomes synthesize proteins for
cytosol
98
Which of the following ions is not present in the cytosol?
Hg2
99
Divisions of tissue stem cells result from direct activity of
DNA molecules
100
The role of Calcium is muscle contraction is
To bind to troponin and expose actin filaments to myosin heads
101
How many centrioles are there in non dividing cells?
2
102
The kinetic core binds to which segment of the chromosome?
centromere
103
Glycogen granules
Are responsible for Glucose storage
104
Which of the following methods uses a beam of electrons?
Transmission Electron Microscope
105
Which cells have plenty of lysosomes?
phagocytes
106
Molecules involved in the transmembrane transport of small molecules (small than 1000) are all true except?
hormone receptors
107
Which is the range of size of human cells?
5-200 mm
108
What is the normal pathway of migration of proteins through the Golgi Apparatus?
? Cis golgi --\> Oyctiosomes --\> Trans golgi --\> Trans golgi: Network
109
Which of the following is not a function of EPR?
Microtubule organiser
110
Major mitochondrial functions are all true except
phagocytosis
111
Which of the following molecules are present in the cytosol?
H20
112
Which of the following molecules are not carbohydrates?
polypeptides
113
What are the main components of the nucleus?
all answers are correct
114
Cell movement requires
microtubules
115
Cell differentiation includes the following features. All are true except
apoptosis
116
Which of the following statements related to the RER is true?
It takes part in the metabolism of glycogen
117
The diameter of actin filament is
6-8nm
118
Which of the following statements relating to H&E staining is true?
Basophilic structures under H&E stain are not red
119
Where are intermediate filaments present?
in the nucleus and cytosol
120
The brushborder of erythrocytes represents which structure?
microvilli
121
The glycocalyx is composed of all, except?
glyocolipids
122
Microtubules are found in the
microvilli
123
What is the function of dystropin?
It links microfilaments to the plasmalemma
124
What syndrome is the genetic defect in Dynein linked to?
Kartagener syndrome
125
What is the function of the layer at the bottom (usually pointed with an arrow) of the plasmalemma?
ion transport
126
The caveolae are involved in all except
ATP synthesis
127
Which of the following answers is TRUE
The viscous external surface cover of the plasmalemma is called?
glycocalyx
128
Which cytoskeleton is associated with the hemidesmosome?
Intermediate filament
129
Which of the following cytoskeletal elements is important for the nucleus?
intermediate filaments
130
Which cytoskeleton is associated with the adherent junction?
actin filements
131
What type of cell junction is the adherent junction?
cell-cell
132
Which cytoskeleton is associated with the desmosome?
intermediate filament
133
Which of the listed proteins does not interact with actin filament?
kinesin
134
which cytoskeleton is associated with focal adhesion?
Actin Filament
