What system of lenses of a light microscope collects and focuses the Illumination to produce a cone of light that illuminates the object to be observed?

Condenser

Objective

Ocular

10

2

Из 106

What maximal resolving power of the light microscope can be?

0,2 micrometers

0,1 nm

1 mm

10

3

Из 106

What type of microscopy include the using of microspectrophotometer?

fluorescence

polarizing

electron

ultraviolet

10

4

Из 106

What substance uses for clearing?

xylene

ethanol

eosin

hematoxylin

10

5

Из 106

Enumerate acidophilic components of tissues:

mitochondria, secretory granules, collagen

microtubules, centrioles, basal body

nucleoproteins, glycosaminoglycans, glycoproteins

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6

Из 106

By using of Feulgen reaction can be identified:

DNA

histones

lipids

RNA

10

7

Из 106

Which one of the following subcellular components has the largest single dimension?

microtubule

lysosome

centriole

Golgi complex

10

8

Из 106

All the following organelles incorporate unit membrane EXEPT:

Ribosome

Lysosomes

Golgi complex

Rough endoplasmic reticulum

10

9

Из 106

Differentiated adult human cells incorporate following structures EXEPT:

sarcomeres

Endoplasmic reticulum

Plasma membranes

Golgi complex

10

10

Из 106

What is the total thickness of the plasma membrane?

1.8-10 nm

2-5 mm

1-2 nm

10

11

Из 106

What organelles contain oxidative enzymes, particularly - catalase?

Peroxisomes

Ribosomes

Lysosomes

Golgi complex

10

12

Из 106

What inclusions the organic solvents used to prepare tissues for both light and electron microscopy can extract?

lipid

glycogen

pigment

10

13

Из 106

In what phase of cell cycle synthesis and replication of DNA take place?

S

M

Go

G1

G2

10

14

Из 106

In what phase of mitosis reappears the nucleolus?

telophase

prophase

anaphase

10

15

Из 106

What is the diameter of nuclear pore?

1.70 nm

70 mm

14 mm

10

16

Из 106

For what purpose can be used the definition of Barr body?

to identify the sex of a human

to definition a certain genetic diseases

to definition the age of a human

10

17

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What is the function of a smooth endoplasmic reticulum?

lipid absorption and metabolism

protein secretion

dehydrating function

10

18

Из 106

What cells in such a stage of development is referred to as being in a Go-phase?

Neurons

Epithelial cells

Connective tissue cells

10

19

Из 106

What is the principal function of the rough endoplasmic reticulum?

Protein synthesis

Steroid synthesis

Side of intracellular digestion

10

20

Из 106

What organelle contains the DNA?

Mitochondria

Ribosomes

Golgi complex

10

21

Из 106

DNA is replicated during

S- period of interphase

G1 -period of interphase

Prophase

G2 -period of interphase

metaphase

10

22

Из 106

Oxidative phosphorylation to adenosine triphosphate in mitochondria is associated with

Cristae

Outer mitochondrial membrane

Matrix

non of the above

10

23

Из 106

The mitotic spindle is composed mostly of

Microtubules

Smooth-surfaced endoplasmic reticulum

Golgi flattened sac

none of the above

10

24

Из 106

The fluid-mosaic model of the membrane structure

has hydrophilic elements directed away from the center

has hydrophobic elements directed away from the center

contains actin filaments

none of the above

10

25

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During anaphase

the chromatids separate, moving away from each other

the chromosomes become visible and condense

the chromosomes uncoil becoming indistinct

none of the above

10

26

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All of the following are considered membranous organelles except

centrioles

lysosomes

mitochondria

Golgi apparatus

peroxysomes

10

27

Из 106

The pars granulosa and pars fibrosa refer to specific portions of the

nucleolus

nucleus

nuclear envelop

rough endoplasmatic reticulum

smooth endoplasmatic reticulum

10

28

Из 106

The serous cells form the secretory potions of a parotid gland. Which of the following organelles provide synthesis and secretion of salivary enzymes?

Rough endoplasmic reticulum, Golgi apparatus

Smooth endoplasmic reticulum

Lysosomes

Endosomes

Mitochondria, Golgi apparatus

10

29

Из 106

A solution of amino acid leucine with a radioactive label has been added to a culture medium where animal cells are growing. A high concentration of marked amino acid near some organelles has been found by a method of radioautography. These organelles can be:

Ribosomes

Lysosomes

Smooth endoplasmic reticulum

Cell center

Golgi apparatus

10

30

Из 106

At reversion to the doctor the patient complained of the strongest girdle pains at a level of an epigastrium, temperature, nausea and vomiting. He is hospitalized with the diagnosis - a pancreatitis. What cell structures at destruction of the membrane are capable to cause an autolysis and fusion of cells and tissues?

Lysosomes

Ribosomes

Smooth endoplasmic reticulum

Cell center

Golgi apparatus

10

31

Из 106