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

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