Phagocytosis

Q.

Differentiate between phagocytosis and pinocytosis.

Q.

What are the 4 steps of phagocytosis?

Q.

Choose the correct sequence of events that occur in the process of phagocytosis.

1. Enzymes destroy the Pathogen $\to$ Membrane sac combines with Lysosome $\to$ Engulfs pathogen in Membrane sac $\to$ Remains are expelled

2. Engulfs pathogen in Membrane sac $\to$ Enzymes destroy the Pathogen $\to$ Membrane sac combines with Lysosome $\to$ Remains are expelled

3. Membrane sac combines with Lysosome $\to$ Engulfs pathogen in Membrane sac $\to$ Enzymes destroy the Pathogen $\to$ Remains are expelled

4. Engulfs pathogen in Membrane sac $\to$ Membrane sac combines with Lysosome $\to$ Enzymes destroy the Pathogen $\to$ Remains are expelled

Q. why is a bacterial cell able to survive better in hot weather conditions?

Q.

What would happen to a marine fish placed in fresh water? Also explain why.

1. Fish would shrivel up as exosmosis would occur

2. Fish would bloat up as exosmosis would occur

3. Fish would shrivel up as endosmosis would occur

4. Fish would bloat up as endosmosis would occur

Q.

What is the difference between apoplast and symplastic pathway?

Q. Select the correct statement w.r.t. life cycle of Plasmodium.

प्लैज्मोडियम के जीवन चक्र के संदर्भ में सही कथन का चयन कीजिए।

1. The sporozoites deposit in spleen before starting life cycle in humans.
   
   जीवाणुज, मनुष्य में अपने जीवन चक्र को प्रारंभ करने से पहले प्लीहा में एकत्र होते हैं
2. Asexual reproduction occurs only in liver cells of human.
   
   अलैंगिक जनन, केवल मनुष्य की यकृत कोशिकाओं में होता है
3. Gametocyte stage is formed in salivary glands of mosquito.
   
   मच्छर की लार ग्रंथियों में युग्मकजनक अवस्था का निर्माण होता है
4. Fertilisation and development take place in the gut of mosquito.
   
   निषेचन और परिवर्धन, मच्छर की आँत्र में होता है

Q.

Which of the following are known as a phagocyte?

1. Erythrocyte

2. Monocyte

3. Eosinophil

4. Basophil

Q.

Why is a Virus not alive?

Q.

Which of the following is not part of phagocytosis?

1. Engulfing of the pathogen in the membrane sac.

2. Expels the remnants of the pathogen.

3. Increases the number of pathogens.

4. Pathogen membrane sacs combine with the lysosome.

Q.

What is phagocytosis

Q. Which cell of the body exhibit a characteristic feature of phagocytosis?

1. Neurons
2. Leucocytes
3. Thrombocytes
4. Erythrocytes

Q. Phagocytosis is also known as

1. Cell eating
2. Cell death
3. Cell drinking
4. Cell lysis

Q. Match the columns and identify the correct option.

	LIST I		LIST II
a	Pinocytosis	(i)	Ephagy
b	Exocytosis	(ii)	Autodigestion
c	Phagocytosis	(iii)	Cell drinking process
d	Autolysis	(iv)	Cell eating process

1. a(iii), b(ii), c(iv), d(i)
2. a(i), b(iii), c(iv), d(ii)
3. a(iii), b(i), c(iv), d(ii)
4. a(iii), b(i), c(ii), d(iv)

Q.

Which of the following are stages of phagocytosis?

1. Expels the remnants of the pathogen.

2. Engulfing of the pathogen in the membrane sac.

3. First, the number of pathogens increase and then it'll decrease.

4. Pathogen membrane sacs combine with the lysosome.

Q.

Select the correct flow of events in which monocyte act as part of nonspecific defense.

1. Monocyte cell membrane engulfs the pathogen and forms a membrane sac.

2. Lysosome combines with the membrane sac carrying the pathogen.

3. Monocyte reaches near the pathogen.

4. Monocyte expells the remnants of the pathogen.

5. The enzyme in the lysosomes destroys and digests the pathogen.

1. 3$\to$ 2$\to$ 1$\to$ 5$\to$ 4

2. 3$\to$ 1$\to$ 2$\to$ 5$\to$ 4

3. 4$\to$ 5$\to$ 2$\to$ 3$\to$ 1

4. 2$\to$ 1$\to$ 3$\to$ 5$\to$4

Q. Neutrophils engulf pathogens by a method called phagocytosis.

1. True
2. False

Q. The process during which the living cells ingest or engulf other cells or particles is called

1. pinocytosis
2. exocytosis
3. phagocytosis

Q. Phagocytosis was first seen by

1. Huxley
2. Strasburger
3. Haeckel
4. Metchnikoff

Q. Which is the correct sequence of events during the phagocytosis of a bacterium by a leucocyte ?
I. Food vacuole forms
II. Plasma membrane receptors detect anti gen on the surface of the bacterium.
III. Lysosomes fuse with the food vacuole
IV. Engults bacterium

1. II $\to$ I $\to$ IV $\to$ III
2. I $\to$ II $\to$ III $\to$ IV
3. II $\to$ IV $\to$ I $\to$ III
4. I $\to$ II $\to$ IV $\to$ III

Q. When a cell engulfs or surrounds a particle and forms a vesicle around it, the phenomenon is known as

1. Exocytosis
2. Phagocytosis
3. Endocytosis
4. None of these

Q. Viruses are neither living nor non-living.

1. True
2. False

Q. Blood group is determined by the present on the red blood cells.

1. antibodies
2. antigens
3. phospholipids
4. nucleic acids

Q. Which of the following engulfs pathogen rapidly?
(a) Acidophils
(b) Basophils
(c) Monocytes
(d) Neutrophils

Q. Engulfing of solid materials by cells is called

1. Pinocytosis
2. Phagocytosis
3. Active transport
4. Autolysis

Q. Which of the following are stages of phagocytosis?

1. Lysosome destroys the pathogens.
2. Engulfing of the pathogen in the membrane sac.
3. Some pathogens may be expelled unharmed.
4. Pathogen membrane sacs combine with the lysosome.

Q. The cell engulfs large particular matter by

1. Pinocytosis
2. Exocytosis
3. Cytokinesis
4. Phagocytosis
5. Osmosis

Q. Taking in of food particles or foreign bodies through cell membrane is

1. Phagocytosis
2. Pinocytosis
3. Active transport.
4. Osmosis

Q. In the diagram which of the following processes are shown in Amoeba?

1. Phagocytosis
2. All of the above
3. Pinocytosis
4. Exocytosis