EASY
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What are 3 types of facilitated diffusion?

Important Questions on Cell - The Unit of Life

EASY
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
In simple organisms, exchange of gases and excretion occurs through –
EASY
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
The movement of molecules during diffusion can be described through all of the following except - 
MEDIUM
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
Select the incorrect statements from the following
I) In plasma membrane, hydrophilic polar heads of lipids arrange towards the outside and the hydrophobic tail towards the inner side
II) In the plasma membrane, peripheral proteins lie on the surface of the membrane while the integrated proteins are not buried in the membrane
III) Neutral solutes may move across the membrane by the process of simple diffusion against the concentration gradient
IV) Polar molecules can pass through the non-polar lipid bilayer and do not require a carrier protein
EASY
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
The plasma membrane (pm) forms the boundary of lung cells. Which of the following statements is true for the pm?
A. Plasma membrane is a semipermeable membrane
B. Water moves across the pm by osmosis.
C. O2 and CO2 can cross the pm by diffusion.
D. Na+ and K+ ions can pass the pm by diffusion.
MEDIUM
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
How does Amoeba obtain its food?
 
EASY
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
Give reasons why a perfume sprayed in a corner of a room can be smelled in other parts of the room?
MEDIUM
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
How does carbon dioxide move in and out of cells?
MEDIUM
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions

What is diffusion ?

MEDIUM
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
What is diffusion? Write its significance?
EASY
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
The plasma membrane is porous and?
EASY
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
Glucose is taken back from glomerular filtrate through 
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Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
In ____ permease assists a molecule to diffuse through the membrane that it cannot penetrate alone.
MEDIUM
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
Write a note on endocytosis.
EASY
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
Movement of a substance from the area of low concentration to an area of high concentration is called diffusion. 
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Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
Assume that an actively respiring cell has 3x number of K+ in its cytoplasm and 2x number of K+ entered into the cell. What is the process by which K+ transport has taken place?
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Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
The smell of hot food spreads by the process of _____. (Osmosis/Diffusion)
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Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
In Amoeba, exchange of environmental oxygen and the body's carbon dioxide occurs by
MEDIUM
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions

Endocytosis is _____
(i) intake of extra-cellular fluid, droplets and macromolecules.
(ii) intake of extracellular particles.
(iii) Growth of plasma membrane around the particle as pseudopodia.
(iv) a nutritive process.
Select the correct option:

Note:- The options provided were not helping to choose the correct answer hence one of the option is changed.

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Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
Phagocytosis is:
EASY
Biology>Cell: Structure and Function>Cell - The Unit of Life>Cell Membrane: Structure and Functions
Selective permeability identifies the process of transmission through semipermeable membrane. This is called