Chapter 4 - Questions

•The opposite figure represents one of the complex structured chemical substances that is used by the plant as immune mean, which of the following statements is correct about this mean ?

It solidifies after a while, so that it prevents the microbe spreading among tissues.
It is secreted inside the vessels, so that it obstructs the pathogen movement
The organisms can't analyze it, so that it prevents the entry of pathogens.
It surrounds the mycelium, so that it prevents its growth.

Which of the following tissues may form tyloses to prevent the spreading of pathogens inside the plant?

A
B
C
D

•What is the type of danger that the plant faces in the opposite ligure ?

Physical by which severe damages are arisen.
Biological with high risk.
Physical that can be avoided by demise the cause.
Chemical that is toxic for the plant.

•In the following, there are 3 substances that play a role in the plant defenses: (X) contributes in the isolation of cut plant regions (Y) supplies the plant cells external protector with the strength and flexibility (Z) prevents the settlement of water on the plant surface. the substances (X), (Y) and (Z) represent ……….respectively

Gums / lignin / cutin
Suberin / cellulose / cutin
Lignin / cutin / cellulose
Cellulose / suberin / gums

•The immunological method that prevents the entry of a microbe inside the plant is …….

The deposition of gums
The hypersensitivity
The formation of an insulating cover around the microbe
The formation of tyloses

•If you know that fusarium is from the fungi that live in the soil and attack the root system of tomato plant which prevents the arrival of water and salts to the leaves, causing panama (wilt) disease, in the light of your study, what is the mean of the structural immunity that the plant used to prevent the spread of this infection by the fungus?

The formation of tyloses in xylem vessels
The plant get rid of the fungus by killing its infected tissues
The plant isolated the tissues that were exposed to the infection
The plant secreted gum substance around the sites of infection

•Which of the following lymphoid organs keeps the red blood corpuscles balance in the human body ?

red bone marrow and thymus gland.
Thymus gland and spleen.
Spleen and red bone marrow.
Lymphoid glands and tonsils.

Which of the following table represents compounds (X) and the mechanism in the following figure?

A
B
C
D

•Which of the following compounds its(their) amount doesn’t increase after infection ?

Receptors.
Phenols
Canavanine.
cutin.

Which choice in the following table illustrates the change that occurs in the receptors number and their location during the resistance of the plant to a disease ?

A
B
C
D

•Which of the following is formed in the plant on the occurrence of an infection with a microbe ?

Detoxifying enzymes
Cutin
Cephalosporin
Receptors

•The opposite figure represents a sample of human blood, which of the following cells are some of them differentiated in the blood bone Marrow?

(M) and (X)
(Z) and (L)
(X)
( Y )

•Which of the following store(s) that most types of immune cells ?

Lymphatic nodes
Bone Marrow
Tonsils
Thymus gland

In the opposite graph, both (x) and (Y)represent a biochemical immunity for the plant, as (X) works on increasing (Y).Which of the following graphs shows what happens to the concentration of both substances after point (Z) ?

A
B
C
D

•The acquired immunity occurs through two apparently separated mechanisms, but they are interfering with each other by some lymphocytes, which are

B, T-cytotoxic and T-helper
Macrophages, T-helper and T-cytotoxic
T-helper, T-cytotoxic and T-suppressor
T-helper and T-suppressor

•The substance(s) whose presence is synchronized with the plasma B-cells is (are) ….

Thymosin
Interleukins
Complements
Interferons

Which of the following cells doesn’t belong to the third line of defense?

A
B
C
D

•T-lymphocytes are named by that name, because……

They circulate in the lymph
They are produced in the bone marrow
They maturate in the thymus gland
They are stored in the lymphatic nodes

•If the number of B-cells in a blood drop of a person is about 400 cells, therefore the number of T-cells in the same blood drop is about ………cells

1000
1800
1500
2500

•The complements perform their immune role by …..

Facilitating the engulfment of pathogen
Engulfing the pathogen
Attracting the macrophages
Mediating the communication among the different immune cells

•The action mechanism of interferons is similar to that of ………..in that both of them are cells stimulators

Complements
Antibodies
Cytokines
lymphokines

Which choice in the following table illustrates the difference between B and T-lymphocytes?

A
B
C
D

•Which of the following can’t lyse the coats of microbes ?

ears enzymes.
Complements.
Histamine.
saliva enzymes.

•From the two opposite figures, which of the following is correct ?

Molecule (1) is formed from two polypeptide chains.
Structure (3) represents an antigen.
Structure (4) stimulates the response of another antibody.
(1) and (2) can't be bound except in the presence of complements.

•The opposite figure illustrates the structure of antibody, the specificity of antibody is due to the presence of structure………

(X)
(L)
(Y)
(Z)

•The best mechanism of the antibodies action is ………..

Agglutination
Lysis
Neutralization
Precipitation

•Which of the following pairs isn’t correct?

antibodies and complements.
B cells and immunoglobulins.
Blood group determination and IgM
Thymus gland and T-cells activity.

•The process that is represented by the opposite figure occurs in the ……….

Blood only
Blood and lymph
Lymph only
Red bone marrow and lymph

•The opposite graph illustrates the concentration of antibodies in the blood of a person who infected by antigen (X) during January and by antigen (Y) during March, which of the following statements expresses this graph?

Antigen (X) is different from antigen (Y) and each one attacks the body for the first time
Antigen (X) is different from antigen (Y) and antigen (X) attacks the body for the second time, while antigen (Y) attacks the bod for the first time
Antigens (X) and (Y) belong to the same microbe that attacks the body for the first time
Antigens (X) and (Y) belong to the same microbe and attacks the body for the second time

•A chain of molecular and cellular signals that leads to a non-specific immune response for a certain antigen is the ……..

Inflammatory response
First line of defense
Cellular immunity
Humoral immunity

•Which of the following characterize(s) the adaptive immunity from the natural immunity ?

inflammatory response
Natural killer cells.
Lysosomes.
Memory cells.

•If you know that the serum by which the patient was injected contains antibodies against the pathogen, while vaccine contains the pathogen in its weak form, which of the following is correct ?

Serum represents an innate immunity.
Serum represents the second line of defense.
Serum represents the second line of defense.
Vaccine represents an acquired immunity.

•On increasing the lymphokines proteins, …… Is not affected

The secretion of perforin and lymphatic toxins
The action of plasma B-cells
The secretion of interleukins and cytokines
The storage of memory cells

•The opposite figure illustrates an immune cell’s action mechanism that occurred inside the human body, this process takes place in the …..

Blood
Thymus gland
Red bone marrow
Cell infected with the virus

•From the opposite table that illustrates the concentration of antibodies in the blood of a person within 50 days, starting from (1st of march to 19th of April), from the previous, we conclude that this person was exposed to the infection for the first time on the …….. of march

8th
2nd
10th
16th

•Which of the following substances doesn’t / don’t play a role in the third line of defense ?

Histamine
Complements
Perforin
interleukins

•From the opposite diagram illustrates the effect of interleukin substance (IL4) on the lymphocytes. So, the two processes (X) and (Y ) represents……….. respectively

Inhibition / phagocytosis
Activation / differentiation
Inhibition / differentiation
Activation / maturation

Chapter 4 – Questions

Quiz Summary

Information

Results

Results

Categories

1. Question

2. Question

3. Question

4. Question

5. Question

6. Question

7. Question

8. Question

9. Question

10. Question

11. Question

12. Question

13. Question

14. Question

15. Question

16. Question

17. Question

18. Question

19. Question

20. Question

21. Question

22. Question

23. Question

24. Question

25. Question

26. Question

27. Question

28. Question

29. Question

30. Question

31. Question

32. Question

33. Question

34. Question

35. Question

36. Question

37. Question