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The plasmalemma allows the passage of...

The plasmalemma allows the passage of liquids engulfed in vesicles and passed on to the cytoplasmic vacuoles. This process of bulk drinking is called

A

phagocytosis

B

reverse pinocytosis

C

exocytosis

D

pinocytosis

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The correct Answer is:
D
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What is the process of solid, changing into liquid called?

Quantum mechanical calcuations show that mathematical mixing of certain combinaaation of orbitals in a given atom forms hybrid orbitals. The spatial orientations of these new orbitals lead to more stable bonds and are consistent with the observed molecular shapes . The process of orbital mixing is called hybridization and the new atomic orbitals are called hybrid orbitals.- Conditions (i) The no. of hybrid orbitals equal the number of atomic orbitalsmixed. (ii)The type of hybrid orbitals obtained varies with the type of atomic orbitals mixed. Rules to determine hybrid orbitals. Method i:Count no .of atoms directiy attached to central atom + lone pairs+single electrons. Method II: Count sigma - bonds+co-ordinate bonds+ lone pair+single electrons. If the number comes one to be 2 implies sp 5 implies sp^3d/dsp^3 3 implies sp^2 6 implies sp^3d^2/d^2sp^3 4 implies sp^3/dsp^2 7 implies sp^3d^3 Answer the following questions based on above passage : Hybrid states of Xe in XeF_2, XeF_4 and XeF_6 respectively are :

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The membrane that allows some of solute molecules to pass through it and prevent others is called

What is the process of liquid substance changing into solid state called?

[A] : Macrophage is a large amoeboid cell that can engulf, ingest and destroy bacteria, damaged cells and worn-out red blood cells. This process is called phagocytosis and is an important part of the body s defence against disease. [R]: Macrophages are found free (wandering) in the tissues, in connective tissue) as histiocytes), in the lining of the blood sinusoids of the liver (as Kupffer cells), and in lymphoid tissue. They make up the reticulo-endothelial system.

The membrane which allows only water molecules to pass through it and no solute molecules is called

Glomerular filtrate is 1. formed continuously by the process of ultrafiltration occurring at Malpighian corpuscles, in which the blood cells and the colloidal macromolecules are not allowed to pass across the filtering surface 2. the electrolyte free fluid collected within the lumen of Bawman's capsule 3. the protein free fluid collected within the lumen of Bowman's capsule 4. formed by the process of selective reabsorption

TRUEMAN BIOLOGY-CELL- THE BASIC UNIT OF LIFE ( CELL AND ITS STRUCTURAL ORGANISATION )-MULTIPLE CHOICE ANSWER TYPE
  1. In cell membrane which molecules show flip flop diffusion

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  2. An Amoeba survives in a hypotonic solution that destroys a ...

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  3. The plasmalemma allows the passage of liquids engulfed in vesicle...

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  4. Lipid bilayers in biomembranes are barrier to

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  5. The fluid mosaic model explains

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  6. Fluidity/flexibiliy of a cell membrane is due to are

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  7. Transmembrane proteins in cell membrane are

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  8. The functional characteristics of a Plasma membrane in fluid mosaic...

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  9. The channels and pumps that control molecular traffic in and out of ...

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  10. A membrane is held together primarily by

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  11. Absorptive cells on free surface bear

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  12. Carbohydrates in cell membrane participate in

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  13. Cell membrane has proteins, lipids and carbohydrates. With respect t...

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  14. Purple cabbage leaves do not pass out colour in cold water but do so i...

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  15. Plasmalemma of two adjacent cells are fussed in case of

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  16. Intercellular junction in animal cell is

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  17. Poisons like cyanides inhibit Na^+ efflux and K^+ influx. The effect i...

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  18. Protein icebergs in a sea of lipids means

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  19. Microfibrils are related to

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  20. The overarching secondary wall which encloses a part of the pit c...

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