D Mycoplasma is a genus of bacteria that lack a cell wall around their cell membrane. They have the cell membrane as outermost layer. Mycoplasma - Aspergillus is a fungus having chitinous cell wall. - Funaria is bryophyte having cellulosic cell wall. - Nostoc is a cyanobacteria surrounded by cellulosic cell wall.
AIPMT (Re-Exam)-2015
Cell : Structure and Functions
168980
Fluid mosaic model for cell membrane was proposed by
1 Singer and Nicholson
2 Robert Brown
3 Watson and Crick
4 Beadle and Tatum
Explanation:
A Fluid mosaic model of the cell membrane was proposed by Singer and Nicholson in 1972. - Robert Brown Discovered nucleus - Watson and Crick's Model stated that the two strands of the double helix DNA are held together by hydrogen bonds between nitrogenous bases on opposite strands. - Beadle and Tatum hypothesis is known as the one gene one enzyme
Tripura JEE-2019
Cell : Structure and Functions
168985
Carrier proteins are involved in :
1 transport of enzymes
2 water transport
3 active transport of ions
4 passive transport of ions
Explanation:
D Active transport is the movement of a substance across a membrane against its concentration gradient It requires energy for that process unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion. Carrier proteins are proteins that carry substances from one side of a biological membrane to the other. Many carriers proteins are found in a cells membrane, through they may also be found in the membranes of internal organelles such as the mitochondria, chloroplasts, nucleolus and others.
BVP-2014
Cell : Structure and Functions
168988
A specific organism [A] showing the lack of cell wall, survive without oxygen, pleomorphic. The other organism \([B]\) has cell wall embedded with silica and indestructible. \(A\) and \(B\) respectively belong to
1 Actinomyces. Diatoms
2 Mycoplasma, Chrysophytes
3 Cyanobacteria, Dinoflagellates
4 Archaebacteria, Desmids
Explanation:
B Mycoplasma- The organism without a cell wall and can live without oxygen are mycoplasmas. Mycoplasma is the simplest and the smallest of the free living prokaryotes. Chrysophytes- Chrysophytes are protists that resemble plants and are typically found in freshwater and marine habitats with low calcium. While some species are amoeboid without any cell walls, others have cellulose cell walls that are reainforced by silica compounds.
D Mycoplasma is a genus of bacteria that lack a cell wall around their cell membrane. They have the cell membrane as outermost layer. Mycoplasma - Aspergillus is a fungus having chitinous cell wall. - Funaria is bryophyte having cellulosic cell wall. - Nostoc is a cyanobacteria surrounded by cellulosic cell wall.
AIPMT (Re-Exam)-2015
Cell : Structure and Functions
168980
Fluid mosaic model for cell membrane was proposed by
1 Singer and Nicholson
2 Robert Brown
3 Watson and Crick
4 Beadle and Tatum
Explanation:
A Fluid mosaic model of the cell membrane was proposed by Singer and Nicholson in 1972. - Robert Brown Discovered nucleus - Watson and Crick's Model stated that the two strands of the double helix DNA are held together by hydrogen bonds between nitrogenous bases on opposite strands. - Beadle and Tatum hypothesis is known as the one gene one enzyme
Tripura JEE-2019
Cell : Structure and Functions
168985
Carrier proteins are involved in :
1 transport of enzymes
2 water transport
3 active transport of ions
4 passive transport of ions
Explanation:
D Active transport is the movement of a substance across a membrane against its concentration gradient It requires energy for that process unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion. Carrier proteins are proteins that carry substances from one side of a biological membrane to the other. Many carriers proteins are found in a cells membrane, through they may also be found in the membranes of internal organelles such as the mitochondria, chloroplasts, nucleolus and others.
BVP-2014
Cell : Structure and Functions
168988
A specific organism [A] showing the lack of cell wall, survive without oxygen, pleomorphic. The other organism \([B]\) has cell wall embedded with silica and indestructible. \(A\) and \(B\) respectively belong to
1 Actinomyces. Diatoms
2 Mycoplasma, Chrysophytes
3 Cyanobacteria, Dinoflagellates
4 Archaebacteria, Desmids
Explanation:
B Mycoplasma- The organism without a cell wall and can live without oxygen are mycoplasmas. Mycoplasma is the simplest and the smallest of the free living prokaryotes. Chrysophytes- Chrysophytes are protists that resemble plants and are typically found in freshwater and marine habitats with low calcium. While some species are amoeboid without any cell walls, others have cellulose cell walls that are reainforced by silica compounds.
D Mycoplasma is a genus of bacteria that lack a cell wall around their cell membrane. They have the cell membrane as outermost layer. Mycoplasma - Aspergillus is a fungus having chitinous cell wall. - Funaria is bryophyte having cellulosic cell wall. - Nostoc is a cyanobacteria surrounded by cellulosic cell wall.
AIPMT (Re-Exam)-2015
Cell : Structure and Functions
168980
Fluid mosaic model for cell membrane was proposed by
1 Singer and Nicholson
2 Robert Brown
3 Watson and Crick
4 Beadle and Tatum
Explanation:
A Fluid mosaic model of the cell membrane was proposed by Singer and Nicholson in 1972. - Robert Brown Discovered nucleus - Watson and Crick's Model stated that the two strands of the double helix DNA are held together by hydrogen bonds between nitrogenous bases on opposite strands. - Beadle and Tatum hypothesis is known as the one gene one enzyme
Tripura JEE-2019
Cell : Structure and Functions
168985
Carrier proteins are involved in :
1 transport of enzymes
2 water transport
3 active transport of ions
4 passive transport of ions
Explanation:
D Active transport is the movement of a substance across a membrane against its concentration gradient It requires energy for that process unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion. Carrier proteins are proteins that carry substances from one side of a biological membrane to the other. Many carriers proteins are found in a cells membrane, through they may also be found in the membranes of internal organelles such as the mitochondria, chloroplasts, nucleolus and others.
BVP-2014
Cell : Structure and Functions
168988
A specific organism [A] showing the lack of cell wall, survive without oxygen, pleomorphic. The other organism \([B]\) has cell wall embedded with silica and indestructible. \(A\) and \(B\) respectively belong to
1 Actinomyces. Diatoms
2 Mycoplasma, Chrysophytes
3 Cyanobacteria, Dinoflagellates
4 Archaebacteria, Desmids
Explanation:
B Mycoplasma- The organism without a cell wall and can live without oxygen are mycoplasmas. Mycoplasma is the simplest and the smallest of the free living prokaryotes. Chrysophytes- Chrysophytes are protists that resemble plants and are typically found in freshwater and marine habitats with low calcium. While some species are amoeboid without any cell walls, others have cellulose cell walls that are reainforced by silica compounds.
D Mycoplasma is a genus of bacteria that lack a cell wall around their cell membrane. They have the cell membrane as outermost layer. Mycoplasma - Aspergillus is a fungus having chitinous cell wall. - Funaria is bryophyte having cellulosic cell wall. - Nostoc is a cyanobacteria surrounded by cellulosic cell wall.
AIPMT (Re-Exam)-2015
Cell : Structure and Functions
168980
Fluid mosaic model for cell membrane was proposed by
1 Singer and Nicholson
2 Robert Brown
3 Watson and Crick
4 Beadle and Tatum
Explanation:
A Fluid mosaic model of the cell membrane was proposed by Singer and Nicholson in 1972. - Robert Brown Discovered nucleus - Watson and Crick's Model stated that the two strands of the double helix DNA are held together by hydrogen bonds between nitrogenous bases on opposite strands. - Beadle and Tatum hypothesis is known as the one gene one enzyme
Tripura JEE-2019
Cell : Structure and Functions
168985
Carrier proteins are involved in :
1 transport of enzymes
2 water transport
3 active transport of ions
4 passive transport of ions
Explanation:
D Active transport is the movement of a substance across a membrane against its concentration gradient It requires energy for that process unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion. Carrier proteins are proteins that carry substances from one side of a biological membrane to the other. Many carriers proteins are found in a cells membrane, through they may also be found in the membranes of internal organelles such as the mitochondria, chloroplasts, nucleolus and others.
BVP-2014
Cell : Structure and Functions
168988
A specific organism [A] showing the lack of cell wall, survive without oxygen, pleomorphic. The other organism \([B]\) has cell wall embedded with silica and indestructible. \(A\) and \(B\) respectively belong to
1 Actinomyces. Diatoms
2 Mycoplasma, Chrysophytes
3 Cyanobacteria, Dinoflagellates
4 Archaebacteria, Desmids
Explanation:
B Mycoplasma- The organism without a cell wall and can live without oxygen are mycoplasmas. Mycoplasma is the simplest and the smallest of the free living prokaryotes. Chrysophytes- Chrysophytes are protists that resemble plants and are typically found in freshwater and marine habitats with low calcium. While some species are amoeboid without any cell walls, others have cellulose cell walls that are reainforced by silica compounds.
