Histology MCQs/Mock Credit Test C

Sir James Young Simpson invigilating an examination (1862)

Mock credit test.

Only one answer is correct, minimal score is 18 points.

1

What is main purpose of fixation?

To remove water from the cells and the extracellular space
To prevent degradation by enzymes released from the cells
To prepare tissue for staining by charged dyes
To make tissue structures harder

2

What is the most common basic dye?

Nuclear red
Hematoxylin
Azocarmine
Eosin

3

Which of following structures is stainable with the PAS reaction?

Smooth endoplasmic reticulum
Elastic fibers and membranes
Intermediate filaments
Reticular fibers

4

Which of following stainings is the best for the transmission electron microscopy?

Incubation with fluorescent dyes
Impregnation by silver nitrate
Staining with osmium tetroxide
Feulgen's reaction

5

There a section through lungs on the picture. Which staining was applied on the specimen?

Weigert - Van Gieson's stain
Masson's yellow trichrome
Masson's blue trichrome
Hematoxylin - eosin

6

Which of following statements about glycocalyx is true?

Glycocalyx is associated to the cell membrany mainly by non-covalent bonds
Glycocalyx is the most abundant on the inner side of Golgi apparatus
Glycocalyx takes place on the outer side of the cell membrane
Glycocalyx is composed mainly of glycogen

7

How is called process ivolving small invaginations of the cell membrane which fuse and entrap extracellular fluid?

Phagocytosis
Endocytosis
Pinocytosis
Exocytosis

8

Which type of signaling is "low-range", i.e. ligands are able to reach cells which are close to the secreting cell only?

Juxtacrine signaling
Paracrine signaling
Endocrine signaling
Synaptic signaling

9

Which organelle is responsible for degradation of misfolded proteins?

Proteasomes
Lysosomes
Endosomes
Exosomes

10

Which type of cytoskeleton supports stereocilia

Vimentin filament
Desmin filaments
Actin filament
Microtubules

11

What is a Barr body?

Site of production of rRNA
Inactivated X chromosome
Granule of glycogen
Lipid droplet

12

Nuclear lamina belong to one group of cellular structures. Which one?

Intermediate filaments
Cell inclusions
Microfilaments
That structure does not exist

13

What is main event during the S phase of the cell cycle?

Simplification of superstructure of DNA
Reparation of DNA breaks
Mitotic division
Synthesis of DNA

14

All but one of processes occurs during the apoptosis. Which of them is not present?

Increased mitochondrial function
Degradation of membrane proteins
Fragmentation of DNA
Activation caspases

15

Which type of epithelium is on the picture?

Stratified squamous non-keratinizing epithelium
Stratified squamous keratinizing epithelium
Transitional epithelium
Trabecular epithelium

16

Which type of collagen is common in the basal lamina?

Type I collagen
Type II collagen
Type III collagen
Type IV collagen

17

Which type of cytoskeleton is associated with the tight junction (occluning junction)?

Intermetiate filaments
Actin filaments
Microtubules
None of above mentioned

18

Which motor protein is responsible for movement of cilia?

Kinesin
Dynein
Myosin
Cilia are immotile

19

Which embryonic structre give rise the connective tissue?

Mesenchyme
Endoderm
Mesoderm
Ektoderm

20

Which structure is abundant inside fibroblasts?

Smooth endoplasmic reticulum
Rough endoplasmic reticulum
Lipid droplets
Lysosomes

21

Which organ is on this picture of some connective tissue?

Wall of the oesophagus
Bone marrow
Tendon
Scar

22

Which type of collagen is main collagen of elastic fibers?

Type I collagen
Type II collagen
Type III collagen
Elastic fibers are not composed of collagens

23

Which molecules are released by activated mast cells?

Proteins of coagulation cascade
Epinephrin and norepinephrin
Heparin and histamine
Antibodies

24

Which type of collagens forms fibrilary component of the extracellular matrix of the fibrocartilage?

Type I and type II collagens
Type I and type III collagens
Type II and type IV collagens
Type III and type IV collagens

25

What is an aggrecan?

Main signaling molecule of osteogenesis
Main adhesion molecule of fibroblasts
Main progeoglycan of cartilages
Main glycoprotein of bones

26

How is called strucure labeled A on the picture?

Volkman's canal
Haverisan canal
Endosteum
Lacuna

27

What is main molecule of Sharpey fibers?

Type III collagen
Type I collagen
Osteopontin
Osteonectin

28

Which intracelular structure is called in neurons a Nissl substance?

Rough endoplasmic reticulum
Golgi apparatus
Microtubules
Nucleolus

29

To which structure in astrocytes belongs glial fibrillary acid protein (GFAP)?

Intermediate filaments
Golgi apparatus
Cell inclusions
Mitochondria

30

Which white blood cell is on the picture?

Lymphocyte
Neutrophil
Monocyte
Basophil