169358
Which one of the following cellular parts is correctly described
1 Ribosomes - those on chloroplasts are larger \((80 \mathrm{~s})\) while those in the cytoplasm are smaller \((70 \mathrm{~s}\)
2 Lysosomes-optimally active at a \(\mathrm{pH}\) of about 8.5
3 Thylakoids-flattened membranous sacs forming the grana of chloroplasts
4 Centrioles - sites for active RNA synthesis
Explanation:
Exp:C The structure that are fromed by stacking of organised flattened membranous sacs (Thylakoids) in the chloroplast of grana an resembles a stack of coins. - It is made up of three layers like structrue in thylakoid system which is surrounded by the stroma and grana. - Chlorophyll and other photosynthetic pigments are situated in the theylakoid membrane which are site for the light dependent reaction of photosynthesis. - Centriole are a membranous hallow micro-cylinders occurs in pair and play Important role in cell division. - Ribosome in chloroplast are 70s type while those cytoplasm in eukaryotic it is of 80 s type. - The enzyme of lysosome (called suicidal bag) function at acidic \(\mathrm{pH}(\mathrm{pH} 4.5-5.0)\).
AIPMT (Mains)-2012
Cell : Structure and Functions
169359
Select the wrong statement from the following:
1 The chloroplasts are generally much larger than mitochondria
2 Both chloroplasts and mitochondria contain an inner and an outer membrane
3 Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
4 Both chloroplasts and mitochondria contain DNA
Explanation:
Exp:C Chloroplasts and mitochondria have an internal compartment. - The thylakoid space, bounded by the thylakoid lumen membrane in chloroplast only. - Chloroplast is largest organelle of cell and mitochondria is \(2^{\text {nd }}\) largest organelles of cell. Both mitochondria and chloroplast have inner and outer membrane. Both mitochondria and chloroplast contain DNA and RNA thus they are called as semiautonomous organelle.
AIPMT-2007
Cell : Structure and Functions
169363
A pigment, which absorbs red and far red light, is
1 cytochrome
2 phytochrome
3 xanthophyll
4 carotene.
Explanation:
Exp:B Phytochrome occurs in two form Pr and Pfr an absorbs red and for red light. Phytochrome is a light sensitive pigment in plants and some bacteria and fungi. It exist in two inter convertible form. Pr and Pfr. If Pfr absorbs for red light of \(730 \mathrm{~nm}\) wavelength when it absorbs for red light convert to its original form. Pr Thus \(\mathrm{Pfr}\) is a active form of phytochrome which inhibited flowering. carotene - These are the hydrocarbon. Insoluble in water and soluble in organic solvent. xanthophylls - is insoluble in water as the long hydrocorban tail attached to the porphyrin ring makes then fat soluble.
AIIMS-1994
Cell : Structure and Functions
169365
What is common between chloroplasts, chromoplasts and leucoplasts ?
1 Presence of pigments
2 Possession of thylakoids and grana
3 Storage of starch, proteins and lipids
4 Ability to multiply by a fission-like process
Explanation:
Exp:D Chloroplast, Chromoplast and Leucoplast are plastids and have the ability to multiply by a fission like process before they are fully mature. - Leucoplast is colorless plastid, involved in the storage of starch lipid and proteins. (i) e.g underground root and stem. - Chloroplast are green colored plastids containing thylakoids and photosynthetic pigment chlorophyll. They are involved in the photosynthetic production of carbohydrates. (ii) In higher plant chloroplast may be ovoid, spheroid or dish-shaped but mostly they are lance shaped. - Chromoplast are plastids responsible for pigment synthesis. They give distinctive to different fruits, flowers and ageing leaves in plants.
AIIMS-2006
Cell : Structure and Functions
169367
All types of plastids possess essentially the same structure because they:
1 Perform the same function
2 Store food materials like starch, fat and protein
3 Occur in aerial parts
4 Can transform from one form to another.
Explanation:
Exp:D All the plastids have a common origin and one type of plastid change into another plastids considered as sac like organelles, generally involved in the formation or storage of food. Schimper divided the plastic into three part according to presence or absence of their pigment. 1.Chloroplasts (chloro - green + plast - living) 2.Leucoplasts (Leukos - white + plast - living) 3.Chromoplasts (chromo - colour + plast - living)
169358
Which one of the following cellular parts is correctly described
1 Ribosomes - those on chloroplasts are larger \((80 \mathrm{~s})\) while those in the cytoplasm are smaller \((70 \mathrm{~s}\)
2 Lysosomes-optimally active at a \(\mathrm{pH}\) of about 8.5
3 Thylakoids-flattened membranous sacs forming the grana of chloroplasts
4 Centrioles - sites for active RNA synthesis
Explanation:
Exp:C The structure that are fromed by stacking of organised flattened membranous sacs (Thylakoids) in the chloroplast of grana an resembles a stack of coins. - It is made up of three layers like structrue in thylakoid system which is surrounded by the stroma and grana. - Chlorophyll and other photosynthetic pigments are situated in the theylakoid membrane which are site for the light dependent reaction of photosynthesis. - Centriole are a membranous hallow micro-cylinders occurs in pair and play Important role in cell division. - Ribosome in chloroplast are 70s type while those cytoplasm in eukaryotic it is of 80 s type. - The enzyme of lysosome (called suicidal bag) function at acidic \(\mathrm{pH}(\mathrm{pH} 4.5-5.0)\).
AIPMT (Mains)-2012
Cell : Structure and Functions
169359
Select the wrong statement from the following:
1 The chloroplasts are generally much larger than mitochondria
2 Both chloroplasts and mitochondria contain an inner and an outer membrane
3 Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
4 Both chloroplasts and mitochondria contain DNA
Explanation:
Exp:C Chloroplasts and mitochondria have an internal compartment. - The thylakoid space, bounded by the thylakoid lumen membrane in chloroplast only. - Chloroplast is largest organelle of cell and mitochondria is \(2^{\text {nd }}\) largest organelles of cell. Both mitochondria and chloroplast have inner and outer membrane. Both mitochondria and chloroplast contain DNA and RNA thus they are called as semiautonomous organelle.
AIPMT-2007
Cell : Structure and Functions
169363
A pigment, which absorbs red and far red light, is
1 cytochrome
2 phytochrome
3 xanthophyll
4 carotene.
Explanation:
Exp:B Phytochrome occurs in two form Pr and Pfr an absorbs red and for red light. Phytochrome is a light sensitive pigment in plants and some bacteria and fungi. It exist in two inter convertible form. Pr and Pfr. If Pfr absorbs for red light of \(730 \mathrm{~nm}\) wavelength when it absorbs for red light convert to its original form. Pr Thus \(\mathrm{Pfr}\) is a active form of phytochrome which inhibited flowering. carotene - These are the hydrocarbon. Insoluble in water and soluble in organic solvent. xanthophylls - is insoluble in water as the long hydrocorban tail attached to the porphyrin ring makes then fat soluble.
AIIMS-1994
Cell : Structure and Functions
169365
What is common between chloroplasts, chromoplasts and leucoplasts ?
1 Presence of pigments
2 Possession of thylakoids and grana
3 Storage of starch, proteins and lipids
4 Ability to multiply by a fission-like process
Explanation:
Exp:D Chloroplast, Chromoplast and Leucoplast are plastids and have the ability to multiply by a fission like process before they are fully mature. - Leucoplast is colorless plastid, involved in the storage of starch lipid and proteins. (i) e.g underground root and stem. - Chloroplast are green colored plastids containing thylakoids and photosynthetic pigment chlorophyll. They are involved in the photosynthetic production of carbohydrates. (ii) In higher plant chloroplast may be ovoid, spheroid or dish-shaped but mostly they are lance shaped. - Chromoplast are plastids responsible for pigment synthesis. They give distinctive to different fruits, flowers and ageing leaves in plants.
AIIMS-2006
Cell : Structure and Functions
169367
All types of plastids possess essentially the same structure because they:
1 Perform the same function
2 Store food materials like starch, fat and protein
3 Occur in aerial parts
4 Can transform from one form to another.
Explanation:
Exp:D All the plastids have a common origin and one type of plastid change into another plastids considered as sac like organelles, generally involved in the formation or storage of food. Schimper divided the plastic into three part according to presence or absence of their pigment. 1.Chloroplasts (chloro - green + plast - living) 2.Leucoplasts (Leukos - white + plast - living) 3.Chromoplasts (chromo - colour + plast - living)
169358
Which one of the following cellular parts is correctly described
1 Ribosomes - those on chloroplasts are larger \((80 \mathrm{~s})\) while those in the cytoplasm are smaller \((70 \mathrm{~s}\)
2 Lysosomes-optimally active at a \(\mathrm{pH}\) of about 8.5
3 Thylakoids-flattened membranous sacs forming the grana of chloroplasts
4 Centrioles - sites for active RNA synthesis
Explanation:
Exp:C The structure that are fromed by stacking of organised flattened membranous sacs (Thylakoids) in the chloroplast of grana an resembles a stack of coins. - It is made up of three layers like structrue in thylakoid system which is surrounded by the stroma and grana. - Chlorophyll and other photosynthetic pigments are situated in the theylakoid membrane which are site for the light dependent reaction of photosynthesis. - Centriole are a membranous hallow micro-cylinders occurs in pair and play Important role in cell division. - Ribosome in chloroplast are 70s type while those cytoplasm in eukaryotic it is of 80 s type. - The enzyme of lysosome (called suicidal bag) function at acidic \(\mathrm{pH}(\mathrm{pH} 4.5-5.0)\).
AIPMT (Mains)-2012
Cell : Structure and Functions
169359
Select the wrong statement from the following:
1 The chloroplasts are generally much larger than mitochondria
2 Both chloroplasts and mitochondria contain an inner and an outer membrane
3 Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
4 Both chloroplasts and mitochondria contain DNA
Explanation:
Exp:C Chloroplasts and mitochondria have an internal compartment. - The thylakoid space, bounded by the thylakoid lumen membrane in chloroplast only. - Chloroplast is largest organelle of cell and mitochondria is \(2^{\text {nd }}\) largest organelles of cell. Both mitochondria and chloroplast have inner and outer membrane. Both mitochondria and chloroplast contain DNA and RNA thus they are called as semiautonomous organelle.
AIPMT-2007
Cell : Structure and Functions
169363
A pigment, which absorbs red and far red light, is
1 cytochrome
2 phytochrome
3 xanthophyll
4 carotene.
Explanation:
Exp:B Phytochrome occurs in two form Pr and Pfr an absorbs red and for red light. Phytochrome is a light sensitive pigment in plants and some bacteria and fungi. It exist in two inter convertible form. Pr and Pfr. If Pfr absorbs for red light of \(730 \mathrm{~nm}\) wavelength when it absorbs for red light convert to its original form. Pr Thus \(\mathrm{Pfr}\) is a active form of phytochrome which inhibited flowering. carotene - These are the hydrocarbon. Insoluble in water and soluble in organic solvent. xanthophylls - is insoluble in water as the long hydrocorban tail attached to the porphyrin ring makes then fat soluble.
AIIMS-1994
Cell : Structure and Functions
169365
What is common between chloroplasts, chromoplasts and leucoplasts ?
1 Presence of pigments
2 Possession of thylakoids and grana
3 Storage of starch, proteins and lipids
4 Ability to multiply by a fission-like process
Explanation:
Exp:D Chloroplast, Chromoplast and Leucoplast are plastids and have the ability to multiply by a fission like process before they are fully mature. - Leucoplast is colorless plastid, involved in the storage of starch lipid and proteins. (i) e.g underground root and stem. - Chloroplast are green colored plastids containing thylakoids and photosynthetic pigment chlorophyll. They are involved in the photosynthetic production of carbohydrates. (ii) In higher plant chloroplast may be ovoid, spheroid or dish-shaped but mostly they are lance shaped. - Chromoplast are plastids responsible for pigment synthesis. They give distinctive to different fruits, flowers and ageing leaves in plants.
AIIMS-2006
Cell : Structure and Functions
169367
All types of plastids possess essentially the same structure because they:
1 Perform the same function
2 Store food materials like starch, fat and protein
3 Occur in aerial parts
4 Can transform from one form to another.
Explanation:
Exp:D All the plastids have a common origin and one type of plastid change into another plastids considered as sac like organelles, generally involved in the formation or storage of food. Schimper divided the plastic into three part according to presence or absence of their pigment. 1.Chloroplasts (chloro - green + plast - living) 2.Leucoplasts (Leukos - white + plast - living) 3.Chromoplasts (chromo - colour + plast - living)
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Cell : Structure and Functions
169358
Which one of the following cellular parts is correctly described
1 Ribosomes - those on chloroplasts are larger \((80 \mathrm{~s})\) while those in the cytoplasm are smaller \((70 \mathrm{~s}\)
2 Lysosomes-optimally active at a \(\mathrm{pH}\) of about 8.5
3 Thylakoids-flattened membranous sacs forming the grana of chloroplasts
4 Centrioles - sites for active RNA synthesis
Explanation:
Exp:C The structure that are fromed by stacking of organised flattened membranous sacs (Thylakoids) in the chloroplast of grana an resembles a stack of coins. - It is made up of three layers like structrue in thylakoid system which is surrounded by the stroma and grana. - Chlorophyll and other photosynthetic pigments are situated in the theylakoid membrane which are site for the light dependent reaction of photosynthesis. - Centriole are a membranous hallow micro-cylinders occurs in pair and play Important role in cell division. - Ribosome in chloroplast are 70s type while those cytoplasm in eukaryotic it is of 80 s type. - The enzyme of lysosome (called suicidal bag) function at acidic \(\mathrm{pH}(\mathrm{pH} 4.5-5.0)\).
AIPMT (Mains)-2012
Cell : Structure and Functions
169359
Select the wrong statement from the following:
1 The chloroplasts are generally much larger than mitochondria
2 Both chloroplasts and mitochondria contain an inner and an outer membrane
3 Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
4 Both chloroplasts and mitochondria contain DNA
Explanation:
Exp:C Chloroplasts and mitochondria have an internal compartment. - The thylakoid space, bounded by the thylakoid lumen membrane in chloroplast only. - Chloroplast is largest organelle of cell and mitochondria is \(2^{\text {nd }}\) largest organelles of cell. Both mitochondria and chloroplast have inner and outer membrane. Both mitochondria and chloroplast contain DNA and RNA thus they are called as semiautonomous organelle.
AIPMT-2007
Cell : Structure and Functions
169363
A pigment, which absorbs red and far red light, is
1 cytochrome
2 phytochrome
3 xanthophyll
4 carotene.
Explanation:
Exp:B Phytochrome occurs in two form Pr and Pfr an absorbs red and for red light. Phytochrome is a light sensitive pigment in plants and some bacteria and fungi. It exist in two inter convertible form. Pr and Pfr. If Pfr absorbs for red light of \(730 \mathrm{~nm}\) wavelength when it absorbs for red light convert to its original form. Pr Thus \(\mathrm{Pfr}\) is a active form of phytochrome which inhibited flowering. carotene - These are the hydrocarbon. Insoluble in water and soluble in organic solvent. xanthophylls - is insoluble in water as the long hydrocorban tail attached to the porphyrin ring makes then fat soluble.
AIIMS-1994
Cell : Structure and Functions
169365
What is common between chloroplasts, chromoplasts and leucoplasts ?
1 Presence of pigments
2 Possession of thylakoids and grana
3 Storage of starch, proteins and lipids
4 Ability to multiply by a fission-like process
Explanation:
Exp:D Chloroplast, Chromoplast and Leucoplast are plastids and have the ability to multiply by a fission like process before they are fully mature. - Leucoplast is colorless plastid, involved in the storage of starch lipid and proteins. (i) e.g underground root and stem. - Chloroplast are green colored plastids containing thylakoids and photosynthetic pigment chlorophyll. They are involved in the photosynthetic production of carbohydrates. (ii) In higher plant chloroplast may be ovoid, spheroid or dish-shaped but mostly they are lance shaped. - Chromoplast are plastids responsible for pigment synthesis. They give distinctive to different fruits, flowers and ageing leaves in plants.
AIIMS-2006
Cell : Structure and Functions
169367
All types of plastids possess essentially the same structure because they:
1 Perform the same function
2 Store food materials like starch, fat and protein
3 Occur in aerial parts
4 Can transform from one form to another.
Explanation:
Exp:D All the plastids have a common origin and one type of plastid change into another plastids considered as sac like organelles, generally involved in the formation or storage of food. Schimper divided the plastic into three part according to presence or absence of their pigment. 1.Chloroplasts (chloro - green + plast - living) 2.Leucoplasts (Leukos - white + plast - living) 3.Chromoplasts (chromo - colour + plast - living)
169358
Which one of the following cellular parts is correctly described
1 Ribosomes - those on chloroplasts are larger \((80 \mathrm{~s})\) while those in the cytoplasm are smaller \((70 \mathrm{~s}\)
2 Lysosomes-optimally active at a \(\mathrm{pH}\) of about 8.5
3 Thylakoids-flattened membranous sacs forming the grana of chloroplasts
4 Centrioles - sites for active RNA synthesis
Explanation:
Exp:C The structure that are fromed by stacking of organised flattened membranous sacs (Thylakoids) in the chloroplast of grana an resembles a stack of coins. - It is made up of three layers like structrue in thylakoid system which is surrounded by the stroma and grana. - Chlorophyll and other photosynthetic pigments are situated in the theylakoid membrane which are site for the light dependent reaction of photosynthesis. - Centriole are a membranous hallow micro-cylinders occurs in pair and play Important role in cell division. - Ribosome in chloroplast are 70s type while those cytoplasm in eukaryotic it is of 80 s type. - The enzyme of lysosome (called suicidal bag) function at acidic \(\mathrm{pH}(\mathrm{pH} 4.5-5.0)\).
AIPMT (Mains)-2012
Cell : Structure and Functions
169359
Select the wrong statement from the following:
1 The chloroplasts are generally much larger than mitochondria
2 Both chloroplasts and mitochondria contain an inner and an outer membrane
3 Both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane
4 Both chloroplasts and mitochondria contain DNA
Explanation:
Exp:C Chloroplasts and mitochondria have an internal compartment. - The thylakoid space, bounded by the thylakoid lumen membrane in chloroplast only. - Chloroplast is largest organelle of cell and mitochondria is \(2^{\text {nd }}\) largest organelles of cell. Both mitochondria and chloroplast have inner and outer membrane. Both mitochondria and chloroplast contain DNA and RNA thus they are called as semiautonomous organelle.
AIPMT-2007
Cell : Structure and Functions
169363
A pigment, which absorbs red and far red light, is
1 cytochrome
2 phytochrome
3 xanthophyll
4 carotene.
Explanation:
Exp:B Phytochrome occurs in two form Pr and Pfr an absorbs red and for red light. Phytochrome is a light sensitive pigment in plants and some bacteria and fungi. It exist in two inter convertible form. Pr and Pfr. If Pfr absorbs for red light of \(730 \mathrm{~nm}\) wavelength when it absorbs for red light convert to its original form. Pr Thus \(\mathrm{Pfr}\) is a active form of phytochrome which inhibited flowering. carotene - These are the hydrocarbon. Insoluble in water and soluble in organic solvent. xanthophylls - is insoluble in water as the long hydrocorban tail attached to the porphyrin ring makes then fat soluble.
AIIMS-1994
Cell : Structure and Functions
169365
What is common between chloroplasts, chromoplasts and leucoplasts ?
1 Presence of pigments
2 Possession of thylakoids and grana
3 Storage of starch, proteins and lipids
4 Ability to multiply by a fission-like process
Explanation:
Exp:D Chloroplast, Chromoplast and Leucoplast are plastids and have the ability to multiply by a fission like process before they are fully mature. - Leucoplast is colorless plastid, involved in the storage of starch lipid and proteins. (i) e.g underground root and stem. - Chloroplast are green colored plastids containing thylakoids and photosynthetic pigment chlorophyll. They are involved in the photosynthetic production of carbohydrates. (ii) In higher plant chloroplast may be ovoid, spheroid or dish-shaped but mostly they are lance shaped. - Chromoplast are plastids responsible for pigment synthesis. They give distinctive to different fruits, flowers and ageing leaves in plants.
AIIMS-2006
Cell : Structure and Functions
169367
All types of plastids possess essentially the same structure because they:
1 Perform the same function
2 Store food materials like starch, fat and protein
3 Occur in aerial parts
4 Can transform from one form to another.
Explanation:
Exp:D All the plastids have a common origin and one type of plastid change into another plastids considered as sac like organelles, generally involved in the formation or storage of food. Schimper divided the plastic into three part according to presence or absence of their pigment. 1.Chloroplasts (chloro - green + plast - living) 2.Leucoplasts (Leukos - white + plast - living) 3.Chromoplasts (chromo - colour + plast - living)
