8TH GRADE BIOLOGY TEST ON THE TOPIC: “BLOOD AND THE REST OF THE INTERNAL ENVIRONMENT OF THE BODY”.

Option 1. Part 1.

For each of the questions A1-A 13 there are answer options, of which only one is correct.

А1. The internal environment of an organism is formed by:

1. body cavities
2. internal organs
3. blood, lymph, tissue fluid
4. cell cytoplasm

A 2.Blood is: 

1. a solution of organic substances 
2. a solution of inorganic substances 
3. a solution of organic and inorganic substances       
4. liquid connective tissue

А3. From what is lymph formed?

1. from blood
2. from tissue fluid
3. from intercellular substance
4. from gastric juice 

 A4.How much water is normal in blood plasma?

1.  90%                
2.  2.80%        
3. 70%                
4.   60%

A5.Who discovered platelets:

1. A. van Leeuwenhoek(1673)
2. W. Gevson (1771)
3. I. I. Mechnikov
4. A. Donne(1842)

А6. What shape do red blood cells have: 

1. the nucleus in the cell contains two to five lobules connected by thin filaments
2. blood cells without nuclei
3. white blood amoeba-like cells with a nucleus
4. red, biconvex blood cell nucleus containing hemoglobin

А7. Where are white blood cells formed?

1. red bone marrow, spleen, lymphatic vessels
2. red bone marrow
3. spleen
4. lymphatic vessels.

A8.Which of the form elements are long-lived:

1. platelets
2. leukocytes
3. red blood cells
4. monocytes

A9.Where do platelets die off:

1. in the red bone marrow
2. in liver
3. in spleen
4. in liver and spleen

А10. How many erythrocytes are contained in 1 mm3:

1. 4.5-5 million.
2. 300-400 thou.
3. 1 million
4. 6-8 thousand

А11. The function of leukocytes is:

1. Transport of oxygen and carbon dioxide
2. Protection against microorganisms, foreign proteins, foreign bodies
3. Participation in blood clotting
4. production of hormones.

А12. The hemoglobin molecule includes: 

1. Iron
2. magnesium
3. zinc 
4. copper  

Part 2.

В1. Choose three correct answers out of six. Which of the following components are part of plasma.

1. amino acids
2. water
3. tissue fluid
4. intercellular substance
5. lymph

Protein, fat, glucose 6.

B2.Make a correspondence between the indicators of human blood and the gender of a person. To do this, for each item in the first column, match the item in the second column. Write the numbers of your answers into the table.

 BLOOD COUNTS SEX

A) red blood cells 4-4.5 million

B) leucocytes 4-8 thou.

C) 200-400 Thousand 2.females

D)sedimentation rate 2-15 mm/hr

D) hemoglobin 13-16 g%

F)sedimentation rate 2-10 mm/hr

G)Red blood cells 4.5-5 million

H) Hemoglobin 12-14 g\%

     A B C D E F G H 

Variant 2. Part 1.

Answers to each of the questions A1-A13 are given, of which only one is correct.

А1. The liquid internal environment does NOT include:

1. blood
2. lymph
3. saliva
4. tissue fluid 

A2.From what is tissue fluid formed?

1. from plasma
2. from lymph
3. from intercellular substance
4. from gastric juice. 

A3.Blood plasma is the fraction after: 

1. precipitation of calcium from the blood                                
2. extraction of all blood-forming elements    
3. deposition of erythrocytes only                              
4. conversion of fibrinogen into fibrin

 A 4 The amount of blood in an adult’s body (liters): 

1. 2    
2. 5-6             
3. 8           
4. 11      

   A5.Who discovered red blood cells :

1. A. van Leeuwenhoek(1673)
2. W. Gevson (1771)
3. i.i. Mechnikow
4. A. Donne (1842)

А6. What shape do leukocytes have: 

1. the cell has a nucleus containing two to five lobules connected by thin filaments
2. blood nonnucleated cells
3. white blood amoeba-like cells with a nucleus
4. red, biconvex blood cell nucleus containing hemoglobin

А7. Where are platelets formed?

1. red bone marrow, spleen, lymphatic vessels
2. red bone marrow
3. spleen
4. lymphatic vessels

А8. Which of the form elements has a duration of 5-7 days

1. platelets
2. white blood cells
3. red blood cells
4. monocytes

А9. Where the erythrocytes die off:

1.  in the red bone marrow
2. in the liver
3. in the spleen
4. in liver and spleen

А10. How many leukocytes are contained in 1 mm3:

1. 4.5-5 million.
2. 300-400 thou.
3. 1 million
4. 6-8 thousand.

А11. The function of red blood cells is:

1. Transport of oxygen and carbon dioxide
2. Protection against microorganisms, foreign proteins, foreign bodies
3. Participation in blood clotting
4. production of hormones.

А12.  As part of the hemoglobin molecule: 

1. protein                                     
2. carbohydrate                                           
3. a fat-like substance  
4. protein and carbohydrate     

Part 2

Q1.Choose three correct answers out of six. Which of the following are the form elements of the leukocyte group.

1. Neutrophils
2. erythrocytes
3. monocytes
4. thrombocytes
5. eosiphils
6. fibrinogen

Q2. Match the characteristics of a human erythrocyte with those of a frog erythrocyte. To do this, for each item in the first column, match the item in the second column. Write the numbers of your answers in the table.

CHARACTERISTIC OF ERYTHROCYTES

A) red blood cells do not contain a nucleus 1. human

B) red blood cells are oval in shape 2.frog

C) biconvex disk shape

D) diameter of 7-8 microns

E) red blood cells contain a nucleus (nuclear)

F) 15-20 microns in length and about 10 microns in width and thickness. 

        A B C D E F