NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Cell : Structure and Functions
168813
What is true about ribosomes?
1 These are found only in eukaryotic cells
2 These are self-splicing introns of some RNAs
3 The prokaryotic ribosomes are \(80 \mathrm{~S}\) where ' \(\mathrm{S}\) ' stands for sedimentation coefficient
4 These are composed of ribonucleic acid and proteins
Explanation:
D Ribosome is a small spherical body within a living cell that is the site of protein synthesis and are composed of ribonucleic acid and proteins. - Ribosome have 2 subunit that is \(70 \mathrm{~S}\) and which is present in prokaryotic cell consist to unit one larger and one smaller. - \(80 \mathrm{~S}\) ribosome are found in eukaryotic cell where 'S' denotes Svedberg unit.
AIPMT (Screening)-2012
Cell : Structure and Functions
168816
Prokaryotic cells occur in:
1 PPLO
2 bacteria
3 cyanobacteria
4 all of these J\
K CET-2002
Explanation:
D (Greek : Pro - Primitive + karyon - nucleus) Here primitive or ill defined or incident nucleus is present eg in bacteria, blue green algae (lyxophyceae or cyano phycease or cynobacteria) and PPLO (Pleuro pneumonia like organism) i.e. akaryobionta. The most extensively studied prokaryote is E. coli. Common bacterium found in intestine of human beings.
Cell : Structure and Functions
168818
Consider the following statements A. In prokaryotic cells, a special membranous structure formed by the extension of the plasma membrane into the cell is known as polysome B. The smooth endoplasmic reticulum is the major site for synthesis of glycoproteins C. RuBisCO is the most abundant protein in the whole of biosphere D. Mitochondria, chloroplasts and peroxisomes are not considered as part of endomembrane system Of the above statements
1 \(\mathrm{C}\) and \(\mathrm{D}\) alone are correct
2 \(\mathrm{A}\) and \(\mathrm{B}\) alone are correct
3 \(\mathrm{B}\) and \(\mathrm{C}\) alone are correct
4 A and D alone are correct
5 B and D alone are correct
Explanation:
A RuBisCO (Ribulose-15 Biphasphate carboxylase/oxygenase) Which is bifunctional or Dual in nature. It has affinity with \(\mathrm{CO}_{2}\) and functions as carboxylation and also has affinity with \(\mathrm{O}_{2}\) and act as oxygenation it is most Abundently found on the earth. An about \(16 \%\) protein of total chloroplast. Functions of mitochondria, chloroplast and peroxisomes are not coordinated with ER, Golgi complex: lysosomes and vacuoles. Hence these are not considered as a part of the end membrane system.
Kerala PMT-2012
Cell : Structure and Functions
168820
Which one of the following is not an inclusion body found in prokaryotes?
1 Cyanophycean granule
2 Glycogen granule
3 Polysome
4 Phosphate granule
Explanation:
C Polysome is not an inclusion body found in prokaryotes. Polysome is an aggregation of ribosomes formed under conditions of high concentration of magnesium. An inclusion body is any of various particulate structure. Usually proteins, formed after viral infections in a prokaryotic or eukaryotic cell. Cell inclusions are considered various nutrient or pigments that can be found within the cell. Example - Cynophycean granule, Glycogen Granule and phosphate granule.
3 The prokaryotic ribosomes are \(80 \mathrm{~S}\) where ' \(\mathrm{S}\) ' stands for sedimentation coefficient
4 These are composed of ribonucleic acid and proteins
Explanation:
D Ribosome is a small spherical body within a living cell that is the site of protein synthesis and are composed of ribonucleic acid and proteins. - Ribosome have 2 subunit that is \(70 \mathrm{~S}\) and which is present in prokaryotic cell consist to unit one larger and one smaller. - \(80 \mathrm{~S}\) ribosome are found in eukaryotic cell where 'S' denotes Svedberg unit.
AIPMT (Screening)-2012
Cell : Structure and Functions
168816
Prokaryotic cells occur in:
1 PPLO
2 bacteria
3 cyanobacteria
4 all of these J\
K CET-2002
Explanation:
D (Greek : Pro - Primitive + karyon - nucleus) Here primitive or ill defined or incident nucleus is present eg in bacteria, blue green algae (lyxophyceae or cyano phycease or cynobacteria) and PPLO (Pleuro pneumonia like organism) i.e. akaryobionta. The most extensively studied prokaryote is E. coli. Common bacterium found in intestine of human beings.
Cell : Structure and Functions
168818
Consider the following statements A. In prokaryotic cells, a special membranous structure formed by the extension of the plasma membrane into the cell is known as polysome B. The smooth endoplasmic reticulum is the major site for synthesis of glycoproteins C. RuBisCO is the most abundant protein in the whole of biosphere D. Mitochondria, chloroplasts and peroxisomes are not considered as part of endomembrane system Of the above statements
1 \(\mathrm{C}\) and \(\mathrm{D}\) alone are correct
2 \(\mathrm{A}\) and \(\mathrm{B}\) alone are correct
3 \(\mathrm{B}\) and \(\mathrm{C}\) alone are correct
4 A and D alone are correct
5 B and D alone are correct
Explanation:
A RuBisCO (Ribulose-15 Biphasphate carboxylase/oxygenase) Which is bifunctional or Dual in nature. It has affinity with \(\mathrm{CO}_{2}\) and functions as carboxylation and also has affinity with \(\mathrm{O}_{2}\) and act as oxygenation it is most Abundently found on the earth. An about \(16 \%\) protein of total chloroplast. Functions of mitochondria, chloroplast and peroxisomes are not coordinated with ER, Golgi complex: lysosomes and vacuoles. Hence these are not considered as a part of the end membrane system.
Kerala PMT-2012
Cell : Structure and Functions
168820
Which one of the following is not an inclusion body found in prokaryotes?
1 Cyanophycean granule
2 Glycogen granule
3 Polysome
4 Phosphate granule
Explanation:
C Polysome is not an inclusion body found in prokaryotes. Polysome is an aggregation of ribosomes formed under conditions of high concentration of magnesium. An inclusion body is any of various particulate structure. Usually proteins, formed after viral infections in a prokaryotic or eukaryotic cell. Cell inclusions are considered various nutrient or pigments that can be found within the cell. Example - Cynophycean granule, Glycogen Granule and phosphate granule.
3 The prokaryotic ribosomes are \(80 \mathrm{~S}\) where ' \(\mathrm{S}\) ' stands for sedimentation coefficient
4 These are composed of ribonucleic acid and proteins
Explanation:
D Ribosome is a small spherical body within a living cell that is the site of protein synthesis and are composed of ribonucleic acid and proteins. - Ribosome have 2 subunit that is \(70 \mathrm{~S}\) and which is present in prokaryotic cell consist to unit one larger and one smaller. - \(80 \mathrm{~S}\) ribosome are found in eukaryotic cell where 'S' denotes Svedberg unit.
AIPMT (Screening)-2012
Cell : Structure and Functions
168816
Prokaryotic cells occur in:
1 PPLO
2 bacteria
3 cyanobacteria
4 all of these J\
K CET-2002
Explanation:
D (Greek : Pro - Primitive + karyon - nucleus) Here primitive or ill defined or incident nucleus is present eg in bacteria, blue green algae (lyxophyceae or cyano phycease or cynobacteria) and PPLO (Pleuro pneumonia like organism) i.e. akaryobionta. The most extensively studied prokaryote is E. coli. Common bacterium found in intestine of human beings.
Cell : Structure and Functions
168818
Consider the following statements A. In prokaryotic cells, a special membranous structure formed by the extension of the plasma membrane into the cell is known as polysome B. The smooth endoplasmic reticulum is the major site for synthesis of glycoproteins C. RuBisCO is the most abundant protein in the whole of biosphere D. Mitochondria, chloroplasts and peroxisomes are not considered as part of endomembrane system Of the above statements
1 \(\mathrm{C}\) and \(\mathrm{D}\) alone are correct
2 \(\mathrm{A}\) and \(\mathrm{B}\) alone are correct
3 \(\mathrm{B}\) and \(\mathrm{C}\) alone are correct
4 A and D alone are correct
5 B and D alone are correct
Explanation:
A RuBisCO (Ribulose-15 Biphasphate carboxylase/oxygenase) Which is bifunctional or Dual in nature. It has affinity with \(\mathrm{CO}_{2}\) and functions as carboxylation and also has affinity with \(\mathrm{O}_{2}\) and act as oxygenation it is most Abundently found on the earth. An about \(16 \%\) protein of total chloroplast. Functions of mitochondria, chloroplast and peroxisomes are not coordinated with ER, Golgi complex: lysosomes and vacuoles. Hence these are not considered as a part of the end membrane system.
Kerala PMT-2012
Cell : Structure and Functions
168820
Which one of the following is not an inclusion body found in prokaryotes?
1 Cyanophycean granule
2 Glycogen granule
3 Polysome
4 Phosphate granule
Explanation:
C Polysome is not an inclusion body found in prokaryotes. Polysome is an aggregation of ribosomes formed under conditions of high concentration of magnesium. An inclusion body is any of various particulate structure. Usually proteins, formed after viral infections in a prokaryotic or eukaryotic cell. Cell inclusions are considered various nutrient or pigments that can be found within the cell. Example - Cynophycean granule, Glycogen Granule and phosphate granule.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Cell : Structure and Functions
168813
What is true about ribosomes?
1 These are found only in eukaryotic cells
2 These are self-splicing introns of some RNAs
3 The prokaryotic ribosomes are \(80 \mathrm{~S}\) where ' \(\mathrm{S}\) ' stands for sedimentation coefficient
4 These are composed of ribonucleic acid and proteins
Explanation:
D Ribosome is a small spherical body within a living cell that is the site of protein synthesis and are composed of ribonucleic acid and proteins. - Ribosome have 2 subunit that is \(70 \mathrm{~S}\) and which is present in prokaryotic cell consist to unit one larger and one smaller. - \(80 \mathrm{~S}\) ribosome are found in eukaryotic cell where 'S' denotes Svedberg unit.
AIPMT (Screening)-2012
Cell : Structure and Functions
168816
Prokaryotic cells occur in:
1 PPLO
2 bacteria
3 cyanobacteria
4 all of these J\
K CET-2002
Explanation:
D (Greek : Pro - Primitive + karyon - nucleus) Here primitive or ill defined or incident nucleus is present eg in bacteria, blue green algae (lyxophyceae or cyano phycease or cynobacteria) and PPLO (Pleuro pneumonia like organism) i.e. akaryobionta. The most extensively studied prokaryote is E. coli. Common bacterium found in intestine of human beings.
Cell : Structure and Functions
168818
Consider the following statements A. In prokaryotic cells, a special membranous structure formed by the extension of the plasma membrane into the cell is known as polysome B. The smooth endoplasmic reticulum is the major site for synthesis of glycoproteins C. RuBisCO is the most abundant protein in the whole of biosphere D. Mitochondria, chloroplasts and peroxisomes are not considered as part of endomembrane system Of the above statements
1 \(\mathrm{C}\) and \(\mathrm{D}\) alone are correct
2 \(\mathrm{A}\) and \(\mathrm{B}\) alone are correct
3 \(\mathrm{B}\) and \(\mathrm{C}\) alone are correct
4 A and D alone are correct
5 B and D alone are correct
Explanation:
A RuBisCO (Ribulose-15 Biphasphate carboxylase/oxygenase) Which is bifunctional or Dual in nature. It has affinity with \(\mathrm{CO}_{2}\) and functions as carboxylation and also has affinity with \(\mathrm{O}_{2}\) and act as oxygenation it is most Abundently found on the earth. An about \(16 \%\) protein of total chloroplast. Functions of mitochondria, chloroplast and peroxisomes are not coordinated with ER, Golgi complex: lysosomes and vacuoles. Hence these are not considered as a part of the end membrane system.
Kerala PMT-2012
Cell : Structure and Functions
168820
Which one of the following is not an inclusion body found in prokaryotes?
1 Cyanophycean granule
2 Glycogen granule
3 Polysome
4 Phosphate granule
Explanation:
C Polysome is not an inclusion body found in prokaryotes. Polysome is an aggregation of ribosomes formed under conditions of high concentration of magnesium. An inclusion body is any of various particulate structure. Usually proteins, formed after viral infections in a prokaryotic or eukaryotic cell. Cell inclusions are considered various nutrient or pigments that can be found within the cell. Example - Cynophycean granule, Glycogen Granule and phosphate granule.
