168961
If a biochemical analysis of mitochondria has to done, the best procedure would be:
1 Select cells which have a larger number of mitochondria
2 Plasmolyse the cell and filter out the mixture an take the debris
3 Grind the cells and filter out the mixture and take the debris
4 Subject the cell to cell fractionation (centrifuge) and obtain mitochondria
Explanation:
D The best procedure would be to subject the cell to cell fractionation (centrifuge) and obtain mitochondria. Cell fractionation is a multistep process that subjects cells to centrifugal force in a spinning device called a centrifuge, which seperates organelles by their physical properties. - Centrifugation of \(5000 \mathrm{~g}\), will sediment the mitochondria.
AIIMS-2015
Cell : Structure and Functions
168962
DNA is present in
1 Chromosomes and dictyosomes
2 Chloroplasts and lysosomes
3 Mitochondria and chloroplasts
4 Mitochondria and endoplasmic reticulum.
Explanation:
C Mitochondria and chloroplast are both semi autonomous organelles with DNA. - Mitochondria and Chloroplast are contain self DNA molecule. The DNA are small and circular double stranded. The mitochondrial DNA varies in size starting from \(5 \mu \mathrm{m}\) to \(30 \mu \mathrm{m}\). Average length of chloroplast DNA is \(45 \mu \mathrm{m}\)
AIIMS-2004
Cell : Structure and Functions
168964
These type of vacuoles contain hydrolases:
1 Sap
2 Contractile
3 Food
4 Air
Explanation:
C Food vacuoles contain hydrolyzing enzymes as they are formed by fusion with lysosomes. The food is digested by hydrolyzing enzymes. Food vacuole or digestive vacuole formed by engulfing the food particles found in protist. Contractile vacuole- Take part in osmoregualation and excretion as in Amoeba. Air vacuole- Help in buoyancy of cell. Sap vacuole- Store and concentrate mineral salts and nutrients.
BCECE-2015
Cell : Structure and Functions
168965
The non-membranous organelles are:
1 centrioles
2 ribosomes
3 nucleolus
4 all of these
Explanation:
D The nucleolus is a small, dense and spherical structure (lack membrane) present in the nucleus of the cell that is visible during the inter phase of the cell. Centrioles (lack membrane) which are right angled to each other and is composed of a protein known as tubulin. Ribosome is a non-membranous cell organelle and present in eukaryotes and prokaryotes cells.
168961
If a biochemical analysis of mitochondria has to done, the best procedure would be:
1 Select cells which have a larger number of mitochondria
2 Plasmolyse the cell and filter out the mixture an take the debris
3 Grind the cells and filter out the mixture and take the debris
4 Subject the cell to cell fractionation (centrifuge) and obtain mitochondria
Explanation:
D The best procedure would be to subject the cell to cell fractionation (centrifuge) and obtain mitochondria. Cell fractionation is a multistep process that subjects cells to centrifugal force in a spinning device called a centrifuge, which seperates organelles by their physical properties. - Centrifugation of \(5000 \mathrm{~g}\), will sediment the mitochondria.
AIIMS-2015
Cell : Structure and Functions
168962
DNA is present in
1 Chromosomes and dictyosomes
2 Chloroplasts and lysosomes
3 Mitochondria and chloroplasts
4 Mitochondria and endoplasmic reticulum.
Explanation:
C Mitochondria and chloroplast are both semi autonomous organelles with DNA. - Mitochondria and Chloroplast are contain self DNA molecule. The DNA are small and circular double stranded. The mitochondrial DNA varies in size starting from \(5 \mu \mathrm{m}\) to \(30 \mu \mathrm{m}\). Average length of chloroplast DNA is \(45 \mu \mathrm{m}\)
AIIMS-2004
Cell : Structure and Functions
168964
These type of vacuoles contain hydrolases:
1 Sap
2 Contractile
3 Food
4 Air
Explanation:
C Food vacuoles contain hydrolyzing enzymes as they are formed by fusion with lysosomes. The food is digested by hydrolyzing enzymes. Food vacuole or digestive vacuole formed by engulfing the food particles found in protist. Contractile vacuole- Take part in osmoregualation and excretion as in Amoeba. Air vacuole- Help in buoyancy of cell. Sap vacuole- Store and concentrate mineral salts and nutrients.
BCECE-2015
Cell : Structure and Functions
168965
The non-membranous organelles are:
1 centrioles
2 ribosomes
3 nucleolus
4 all of these
Explanation:
D The nucleolus is a small, dense and spherical structure (lack membrane) present in the nucleus of the cell that is visible during the inter phase of the cell. Centrioles (lack membrane) which are right angled to each other and is composed of a protein known as tubulin. Ribosome is a non-membranous cell organelle and present in eukaryotes and prokaryotes cells.
168961
If a biochemical analysis of mitochondria has to done, the best procedure would be:
1 Select cells which have a larger number of mitochondria
2 Plasmolyse the cell and filter out the mixture an take the debris
3 Grind the cells and filter out the mixture and take the debris
4 Subject the cell to cell fractionation (centrifuge) and obtain mitochondria
Explanation:
D The best procedure would be to subject the cell to cell fractionation (centrifuge) and obtain mitochondria. Cell fractionation is a multistep process that subjects cells to centrifugal force in a spinning device called a centrifuge, which seperates organelles by their physical properties. - Centrifugation of \(5000 \mathrm{~g}\), will sediment the mitochondria.
AIIMS-2015
Cell : Structure and Functions
168962
DNA is present in
1 Chromosomes and dictyosomes
2 Chloroplasts and lysosomes
3 Mitochondria and chloroplasts
4 Mitochondria and endoplasmic reticulum.
Explanation:
C Mitochondria and chloroplast are both semi autonomous organelles with DNA. - Mitochondria and Chloroplast are contain self DNA molecule. The DNA are small and circular double stranded. The mitochondrial DNA varies in size starting from \(5 \mu \mathrm{m}\) to \(30 \mu \mathrm{m}\). Average length of chloroplast DNA is \(45 \mu \mathrm{m}\)
AIIMS-2004
Cell : Structure and Functions
168964
These type of vacuoles contain hydrolases:
1 Sap
2 Contractile
3 Food
4 Air
Explanation:
C Food vacuoles contain hydrolyzing enzymes as they are formed by fusion with lysosomes. The food is digested by hydrolyzing enzymes. Food vacuole or digestive vacuole formed by engulfing the food particles found in protist. Contractile vacuole- Take part in osmoregualation and excretion as in Amoeba. Air vacuole- Help in buoyancy of cell. Sap vacuole- Store and concentrate mineral salts and nutrients.
BCECE-2015
Cell : Structure and Functions
168965
The non-membranous organelles are:
1 centrioles
2 ribosomes
3 nucleolus
4 all of these
Explanation:
D The nucleolus is a small, dense and spherical structure (lack membrane) present in the nucleus of the cell that is visible during the inter phase of the cell. Centrioles (lack membrane) which are right angled to each other and is composed of a protein known as tubulin. Ribosome is a non-membranous cell organelle and present in eukaryotes and prokaryotes cells.
168961
If a biochemical analysis of mitochondria has to done, the best procedure would be:
1 Select cells which have a larger number of mitochondria
2 Plasmolyse the cell and filter out the mixture an take the debris
3 Grind the cells and filter out the mixture and take the debris
4 Subject the cell to cell fractionation (centrifuge) and obtain mitochondria
Explanation:
D The best procedure would be to subject the cell to cell fractionation (centrifuge) and obtain mitochondria. Cell fractionation is a multistep process that subjects cells to centrifugal force in a spinning device called a centrifuge, which seperates organelles by their physical properties. - Centrifugation of \(5000 \mathrm{~g}\), will sediment the mitochondria.
AIIMS-2015
Cell : Structure and Functions
168962
DNA is present in
1 Chromosomes and dictyosomes
2 Chloroplasts and lysosomes
3 Mitochondria and chloroplasts
4 Mitochondria and endoplasmic reticulum.
Explanation:
C Mitochondria and chloroplast are both semi autonomous organelles with DNA. - Mitochondria and Chloroplast are contain self DNA molecule. The DNA are small and circular double stranded. The mitochondrial DNA varies in size starting from \(5 \mu \mathrm{m}\) to \(30 \mu \mathrm{m}\). Average length of chloroplast DNA is \(45 \mu \mathrm{m}\)
AIIMS-2004
Cell : Structure and Functions
168964
These type of vacuoles contain hydrolases:
1 Sap
2 Contractile
3 Food
4 Air
Explanation:
C Food vacuoles contain hydrolyzing enzymes as they are formed by fusion with lysosomes. The food is digested by hydrolyzing enzymes. Food vacuole or digestive vacuole formed by engulfing the food particles found in protist. Contractile vacuole- Take part in osmoregualation and excretion as in Amoeba. Air vacuole- Help in buoyancy of cell. Sap vacuole- Store and concentrate mineral salts and nutrients.
BCECE-2015
Cell : Structure and Functions
168965
The non-membranous organelles are:
1 centrioles
2 ribosomes
3 nucleolus
4 all of these
Explanation:
D The nucleolus is a small, dense and spherical structure (lack membrane) present in the nucleus of the cell that is visible during the inter phase of the cell. Centrioles (lack membrane) which are right angled to each other and is composed of a protein known as tubulin. Ribosome is a non-membranous cell organelle and present in eukaryotes and prokaryotes cells.
