A Lysergic acid diethylamide (LSD) is synthetically derived from the fungus Cleviceps purpuria. LSD was first synthesized by Albert Hofmann in 1938. LSD are powerful hellucinogens. That change mood, behavior and thoughts they may cause pleasant or unpleasant semation in the body, they effect cerebrum and sense organ and produce euphoria.
Haryana PMT-2003
Cell : Structure and Functions
169055
On which surface of cell Donnan equilibrium occur?
1 Tonoplast
2 Cell wall
3 Plasma membrane
4 Nuclear membrane
Explanation:
C Plasma Membrane - Plasma Membrane is selectively permiable membrane. The resting membrane potential occurs across plasma membrane. Due to selectively permeability there is a high concentration of anions present across the cell membrane. This creates donnan equilibrium. It is also called as Gibbs - Donnan equilibrium. In other words, it is an uneven distribution of ions on one side of semi permeable membrane. Thus, the correct answer is option (c). a) Cell wall- The cell wall is the protective, semipermeable outer layer of plant cell. The major function of the cell work is to give the cell strength and picture and to filter molecules that pass in and out of the cell. A cell is the smallest part of an organism that still contain that organism's elements. b) Tonoplasts- It is a semi permeable membrane surrounding a vacuole in a plant cell. It is mainly involve in regulating the movement of ions around the cell and isolating materials that might be harmful or a threat to the cell. d. Nuclear Membrane- A nuclear membrane is a double membranous structure. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials such as nucleic acids and proteins, between the nucleoplasm and cytoplasm.
GUJCET-2015
Cell : Structure and Functions
169056
Keeping in view the "fluid mosaic model" for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
1 While proteins can flip-flop, lipids cannot
2 neither lipids, nor proteins can flip-flop
3 Both lipids and proteins can flip-flop
4 While lipids can rarely flip-flop proteins cannot
Explanation:
D Fluid mosaic model of membranes states that membrane components are free to diffuse in the plane of the membrane. Some of the membrane proteins are restricted to specific regions of the membrane by interactions with cytoskeletal proteins. The lipids in the bilayer can sometimes undergo transverse diffusion or "flip-flop movement" to go from one layer to the other that means rarely flip-flop of the phospholipids occur. This does not occur with the protein. (a) Movement of phospholipids
AIPMT-2008
Cell : Structure and Functions
169059
Cell wall consists of
1 Lignin, hemi cellulose, pectin and lipid
2 Lignin, hemi cellulose, pectin and cellulose
3 Lignin, hemi cellulose, protein and lipid
4 Hemi cellulose, cellulose, tubulin and lignin
Explanation:
B Cell Walls consist of Lignin, hemi cellulose, pectin and cellulose. Cellulose \(\rightarrow\) It is an important component of plant cell that provide rigidity to the plant stems leaves and branches. They are present in the cellulosic micro fibril walls. Hemicellulose \(\rightarrow\) Hemicellulose is a mixture of polymerised xylans, mannans,glucomannans, galactans xyloglucans and arabinogalactans. It binds microfibrils with matrix. Pectin \(\rightarrow\) Pectin is the filler substance of matrix. It is mixture of polymerised and methylated, galacturonic acid and neutral sugars.
NEET Test Series from KOTA - 10 Papers In MS WORD
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Cell : Structure and Functions
169048
L.S.D. is obtained from :
1 Claviceps purpurea
2 Rauwolffia serpentine
3 Papaver somniferum
4 Cannabis sativa
Explanation:
A Lysergic acid diethylamide (LSD) is synthetically derived from the fungus Cleviceps purpuria. LSD was first synthesized by Albert Hofmann in 1938. LSD are powerful hellucinogens. That change mood, behavior and thoughts they may cause pleasant or unpleasant semation in the body, they effect cerebrum and sense organ and produce euphoria.
Haryana PMT-2003
Cell : Structure and Functions
169055
On which surface of cell Donnan equilibrium occur?
1 Tonoplast
2 Cell wall
3 Plasma membrane
4 Nuclear membrane
Explanation:
C Plasma Membrane - Plasma Membrane is selectively permiable membrane. The resting membrane potential occurs across plasma membrane. Due to selectively permeability there is a high concentration of anions present across the cell membrane. This creates donnan equilibrium. It is also called as Gibbs - Donnan equilibrium. In other words, it is an uneven distribution of ions on one side of semi permeable membrane. Thus, the correct answer is option (c). a) Cell wall- The cell wall is the protective, semipermeable outer layer of plant cell. The major function of the cell work is to give the cell strength and picture and to filter molecules that pass in and out of the cell. A cell is the smallest part of an organism that still contain that organism's elements. b) Tonoplasts- It is a semi permeable membrane surrounding a vacuole in a plant cell. It is mainly involve in regulating the movement of ions around the cell and isolating materials that might be harmful or a threat to the cell. d. Nuclear Membrane- A nuclear membrane is a double membranous structure. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials such as nucleic acids and proteins, between the nucleoplasm and cytoplasm.
GUJCET-2015
Cell : Structure and Functions
169056
Keeping in view the "fluid mosaic model" for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
1 While proteins can flip-flop, lipids cannot
2 neither lipids, nor proteins can flip-flop
3 Both lipids and proteins can flip-flop
4 While lipids can rarely flip-flop proteins cannot
Explanation:
D Fluid mosaic model of membranes states that membrane components are free to diffuse in the plane of the membrane. Some of the membrane proteins are restricted to specific regions of the membrane by interactions with cytoskeletal proteins. The lipids in the bilayer can sometimes undergo transverse diffusion or "flip-flop movement" to go from one layer to the other that means rarely flip-flop of the phospholipids occur. This does not occur with the protein. (a) Movement of phospholipids
AIPMT-2008
Cell : Structure and Functions
169059
Cell wall consists of
1 Lignin, hemi cellulose, pectin and lipid
2 Lignin, hemi cellulose, pectin and cellulose
3 Lignin, hemi cellulose, protein and lipid
4 Hemi cellulose, cellulose, tubulin and lignin
Explanation:
B Cell Walls consist of Lignin, hemi cellulose, pectin and cellulose. Cellulose \(\rightarrow\) It is an important component of plant cell that provide rigidity to the plant stems leaves and branches. They are present in the cellulosic micro fibril walls. Hemicellulose \(\rightarrow\) Hemicellulose is a mixture of polymerised xylans, mannans,glucomannans, galactans xyloglucans and arabinogalactans. It binds microfibrils with matrix. Pectin \(\rightarrow\) Pectin is the filler substance of matrix. It is mixture of polymerised and methylated, galacturonic acid and neutral sugars.
A Lysergic acid diethylamide (LSD) is synthetically derived from the fungus Cleviceps purpuria. LSD was first synthesized by Albert Hofmann in 1938. LSD are powerful hellucinogens. That change mood, behavior and thoughts they may cause pleasant or unpleasant semation in the body, they effect cerebrum and sense organ and produce euphoria.
Haryana PMT-2003
Cell : Structure and Functions
169055
On which surface of cell Donnan equilibrium occur?
1 Tonoplast
2 Cell wall
3 Plasma membrane
4 Nuclear membrane
Explanation:
C Plasma Membrane - Plasma Membrane is selectively permiable membrane. The resting membrane potential occurs across plasma membrane. Due to selectively permeability there is a high concentration of anions present across the cell membrane. This creates donnan equilibrium. It is also called as Gibbs - Donnan equilibrium. In other words, it is an uneven distribution of ions on one side of semi permeable membrane. Thus, the correct answer is option (c). a) Cell wall- The cell wall is the protective, semipermeable outer layer of plant cell. The major function of the cell work is to give the cell strength and picture and to filter molecules that pass in and out of the cell. A cell is the smallest part of an organism that still contain that organism's elements. b) Tonoplasts- It is a semi permeable membrane surrounding a vacuole in a plant cell. It is mainly involve in regulating the movement of ions around the cell and isolating materials that might be harmful or a threat to the cell. d. Nuclear Membrane- A nuclear membrane is a double membranous structure. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials such as nucleic acids and proteins, between the nucleoplasm and cytoplasm.
GUJCET-2015
Cell : Structure and Functions
169056
Keeping in view the "fluid mosaic model" for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
1 While proteins can flip-flop, lipids cannot
2 neither lipids, nor proteins can flip-flop
3 Both lipids and proteins can flip-flop
4 While lipids can rarely flip-flop proteins cannot
Explanation:
D Fluid mosaic model of membranes states that membrane components are free to diffuse in the plane of the membrane. Some of the membrane proteins are restricted to specific regions of the membrane by interactions with cytoskeletal proteins. The lipids in the bilayer can sometimes undergo transverse diffusion or "flip-flop movement" to go from one layer to the other that means rarely flip-flop of the phospholipids occur. This does not occur with the protein. (a) Movement of phospholipids
AIPMT-2008
Cell : Structure and Functions
169059
Cell wall consists of
1 Lignin, hemi cellulose, pectin and lipid
2 Lignin, hemi cellulose, pectin and cellulose
3 Lignin, hemi cellulose, protein and lipid
4 Hemi cellulose, cellulose, tubulin and lignin
Explanation:
B Cell Walls consist of Lignin, hemi cellulose, pectin and cellulose. Cellulose \(\rightarrow\) It is an important component of plant cell that provide rigidity to the plant stems leaves and branches. They are present in the cellulosic micro fibril walls. Hemicellulose \(\rightarrow\) Hemicellulose is a mixture of polymerised xylans, mannans,glucomannans, galactans xyloglucans and arabinogalactans. It binds microfibrils with matrix. Pectin \(\rightarrow\) Pectin is the filler substance of matrix. It is mixture of polymerised and methylated, galacturonic acid and neutral sugars.
A Lysergic acid diethylamide (LSD) is synthetically derived from the fungus Cleviceps purpuria. LSD was first synthesized by Albert Hofmann in 1938. LSD are powerful hellucinogens. That change mood, behavior and thoughts they may cause pleasant or unpleasant semation in the body, they effect cerebrum and sense organ and produce euphoria.
Haryana PMT-2003
Cell : Structure and Functions
169055
On which surface of cell Donnan equilibrium occur?
1 Tonoplast
2 Cell wall
3 Plasma membrane
4 Nuclear membrane
Explanation:
C Plasma Membrane - Plasma Membrane is selectively permiable membrane. The resting membrane potential occurs across plasma membrane. Due to selectively permeability there is a high concentration of anions present across the cell membrane. This creates donnan equilibrium. It is also called as Gibbs - Donnan equilibrium. In other words, it is an uneven distribution of ions on one side of semi permeable membrane. Thus, the correct answer is option (c). a) Cell wall- The cell wall is the protective, semipermeable outer layer of plant cell. The major function of the cell work is to give the cell strength and picture and to filter molecules that pass in and out of the cell. A cell is the smallest part of an organism that still contain that organism's elements. b) Tonoplasts- It is a semi permeable membrane surrounding a vacuole in a plant cell. It is mainly involve in regulating the movement of ions around the cell and isolating materials that might be harmful or a threat to the cell. d. Nuclear Membrane- A nuclear membrane is a double membranous structure. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials such as nucleic acids and proteins, between the nucleoplasm and cytoplasm.
GUJCET-2015
Cell : Structure and Functions
169056
Keeping in view the "fluid mosaic model" for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
1 While proteins can flip-flop, lipids cannot
2 neither lipids, nor proteins can flip-flop
3 Both lipids and proteins can flip-flop
4 While lipids can rarely flip-flop proteins cannot
Explanation:
D Fluid mosaic model of membranes states that membrane components are free to diffuse in the plane of the membrane. Some of the membrane proteins are restricted to specific regions of the membrane by interactions with cytoskeletal proteins. The lipids in the bilayer can sometimes undergo transverse diffusion or "flip-flop movement" to go from one layer to the other that means rarely flip-flop of the phospholipids occur. This does not occur with the protein. (a) Movement of phospholipids
AIPMT-2008
Cell : Structure and Functions
169059
Cell wall consists of
1 Lignin, hemi cellulose, pectin and lipid
2 Lignin, hemi cellulose, pectin and cellulose
3 Lignin, hemi cellulose, protein and lipid
4 Hemi cellulose, cellulose, tubulin and lignin
Explanation:
B Cell Walls consist of Lignin, hemi cellulose, pectin and cellulose. Cellulose \(\rightarrow\) It is an important component of plant cell that provide rigidity to the plant stems leaves and branches. They are present in the cellulosic micro fibril walls. Hemicellulose \(\rightarrow\) Hemicellulose is a mixture of polymerised xylans, mannans,glucomannans, galactans xyloglucans and arabinogalactans. It binds microfibrils with matrix. Pectin \(\rightarrow\) Pectin is the filler substance of matrix. It is mixture of polymerised and methylated, galacturonic acid and neutral sugars.
