168885
Which of the following enhances or induces fusion of protoplasts?
1 Polyethylene glycol and sodium nitrate
2 IAA and kinetin
3 IAA and gibberellins
4 Sodium chloride and potassium chloride
Explanation:
A Polyethylene glycol (PEG) and sodium nitrate enhances fusion of protoplasts (protoplast fusion), protoplast fusion is physical phenomenon which occurs due to the fusion of protoplast (cell without cell wall) of two more cell. Polyethylene Glycol and sodium nitrate are mostcommonly used protoplast fusion inducing agents which are commonly known as chemical fucogens.
AIPMT-2015
Cell : Structure and Functions
168886
A protoplast is a cell
1 Without cell wall
2 Without plasma membrane
3 Without nucleus
4 Undergoing division
Explanation:
A A protoplast in a cell without cell wall. It is a plant, bacterial or fungal cell that had its cell wall removed, either completely or partially via mechanical, chemical or enzymatic actions. The colour less material comprising the living part of a cell, including the cytoplasm nucleus and other organelles.
AIPMT (Re-Exam)-2015
Cell : Structure and Functions
168887
Match the following and select the correct answer:
A. Centriole
(i) Infoldings in mitochondria
B. Chlorophyll
(ii) Thylakoids
C. Cristae
(iii) Nucleic acids
D. Ribozymes
(iv) Basal body cilia or flagella
1 A - (iv) B - (ii) C - (i) D - (iii)
2 A - (i) B - (ii) C - (iv) D - (iii)
3 A - (i) B - (iii) C - (ii) D - (iv)
4 A - (iv) B - (iii) C - (i) D - (ii)
Explanation:
A Basal bodies of eukaryotes are modified centrioles that give rise to cilia and flagella. Have \(\mathrm{Mg}^{+}\) as central element. Chlorophyll is found in high concentrations in chloroplasts of plant cells. They are vital for photosynthesis and are specifically arranged in and around photo systems that are embedded in the thylakoid membranes of chloroplasts. The inner membrane of the mitochondrion fold inwards, forming the cristae. The cristae increase the surface area to increase the productivity of cellular respiration. Ribosome's, also termed RNA molecules are capable of catalyzing specific biochemical reactions are ribonucleic acid that are self splicing.
AIPMT-2014
Cell : Structure and Functions
168888
A human RBC is placed in \(1.5 \%\) salt solution. It will :-
1 Swell up
2 Shrink
3 Remain unaffected
4 Burst.
Explanation:
B Human RBC isotonic for \(0.9 \%\) salt solution water moves from high conc. to low concentration human \(\mathrm{RBC}=1.5 \%\) salt solution RBCs is an animal cell when a animal cell is placed in \(1.5 \% \mathrm{NaCl}\) the cell shrinks, because, when a cell is placed in high salt concentration exosmosis will occur and the cell will lose water, water moves from higher water concentration to lower water concentration.
168885
Which of the following enhances or induces fusion of protoplasts?
1 Polyethylene glycol and sodium nitrate
2 IAA and kinetin
3 IAA and gibberellins
4 Sodium chloride and potassium chloride
Explanation:
A Polyethylene glycol (PEG) and sodium nitrate enhances fusion of protoplasts (protoplast fusion), protoplast fusion is physical phenomenon which occurs due to the fusion of protoplast (cell without cell wall) of two more cell. Polyethylene Glycol and sodium nitrate are mostcommonly used protoplast fusion inducing agents which are commonly known as chemical fucogens.
AIPMT-2015
Cell : Structure and Functions
168886
A protoplast is a cell
1 Without cell wall
2 Without plasma membrane
3 Without nucleus
4 Undergoing division
Explanation:
A A protoplast in a cell without cell wall. It is a plant, bacterial or fungal cell that had its cell wall removed, either completely or partially via mechanical, chemical or enzymatic actions. The colour less material comprising the living part of a cell, including the cytoplasm nucleus and other organelles.
AIPMT (Re-Exam)-2015
Cell : Structure and Functions
168887
Match the following and select the correct answer:
A. Centriole
(i) Infoldings in mitochondria
B. Chlorophyll
(ii) Thylakoids
C. Cristae
(iii) Nucleic acids
D. Ribozymes
(iv) Basal body cilia or flagella
1 A - (iv) B - (ii) C - (i) D - (iii)
2 A - (i) B - (ii) C - (iv) D - (iii)
3 A - (i) B - (iii) C - (ii) D - (iv)
4 A - (iv) B - (iii) C - (i) D - (ii)
Explanation:
A Basal bodies of eukaryotes are modified centrioles that give rise to cilia and flagella. Have \(\mathrm{Mg}^{+}\) as central element. Chlorophyll is found in high concentrations in chloroplasts of plant cells. They are vital for photosynthesis and are specifically arranged in and around photo systems that are embedded in the thylakoid membranes of chloroplasts. The inner membrane of the mitochondrion fold inwards, forming the cristae. The cristae increase the surface area to increase the productivity of cellular respiration. Ribosome's, also termed RNA molecules are capable of catalyzing specific biochemical reactions are ribonucleic acid that are self splicing.
AIPMT-2014
Cell : Structure and Functions
168888
A human RBC is placed in \(1.5 \%\) salt solution. It will :-
1 Swell up
2 Shrink
3 Remain unaffected
4 Burst.
Explanation:
B Human RBC isotonic for \(0.9 \%\) salt solution water moves from high conc. to low concentration human \(\mathrm{RBC}=1.5 \%\) salt solution RBCs is an animal cell when a animal cell is placed in \(1.5 \% \mathrm{NaCl}\) the cell shrinks, because, when a cell is placed in high salt concentration exosmosis will occur and the cell will lose water, water moves from higher water concentration to lower water concentration.
168885
Which of the following enhances or induces fusion of protoplasts?
1 Polyethylene glycol and sodium nitrate
2 IAA and kinetin
3 IAA and gibberellins
4 Sodium chloride and potassium chloride
Explanation:
A Polyethylene glycol (PEG) and sodium nitrate enhances fusion of protoplasts (protoplast fusion), protoplast fusion is physical phenomenon which occurs due to the fusion of protoplast (cell without cell wall) of two more cell. Polyethylene Glycol and sodium nitrate are mostcommonly used protoplast fusion inducing agents which are commonly known as chemical fucogens.
AIPMT-2015
Cell : Structure and Functions
168886
A protoplast is a cell
1 Without cell wall
2 Without plasma membrane
3 Without nucleus
4 Undergoing division
Explanation:
A A protoplast in a cell without cell wall. It is a plant, bacterial or fungal cell that had its cell wall removed, either completely or partially via mechanical, chemical or enzymatic actions. The colour less material comprising the living part of a cell, including the cytoplasm nucleus and other organelles.
AIPMT (Re-Exam)-2015
Cell : Structure and Functions
168887
Match the following and select the correct answer:
A. Centriole
(i) Infoldings in mitochondria
B. Chlorophyll
(ii) Thylakoids
C. Cristae
(iii) Nucleic acids
D. Ribozymes
(iv) Basal body cilia or flagella
1 A - (iv) B - (ii) C - (i) D - (iii)
2 A - (i) B - (ii) C - (iv) D - (iii)
3 A - (i) B - (iii) C - (ii) D - (iv)
4 A - (iv) B - (iii) C - (i) D - (ii)
Explanation:
A Basal bodies of eukaryotes are modified centrioles that give rise to cilia and flagella. Have \(\mathrm{Mg}^{+}\) as central element. Chlorophyll is found in high concentrations in chloroplasts of plant cells. They are vital for photosynthesis and are specifically arranged in and around photo systems that are embedded in the thylakoid membranes of chloroplasts. The inner membrane of the mitochondrion fold inwards, forming the cristae. The cristae increase the surface area to increase the productivity of cellular respiration. Ribosome's, also termed RNA molecules are capable of catalyzing specific biochemical reactions are ribonucleic acid that are self splicing.
AIPMT-2014
Cell : Structure and Functions
168888
A human RBC is placed in \(1.5 \%\) salt solution. It will :-
1 Swell up
2 Shrink
3 Remain unaffected
4 Burst.
Explanation:
B Human RBC isotonic for \(0.9 \%\) salt solution water moves from high conc. to low concentration human \(\mathrm{RBC}=1.5 \%\) salt solution RBCs is an animal cell when a animal cell is placed in \(1.5 \% \mathrm{NaCl}\) the cell shrinks, because, when a cell is placed in high salt concentration exosmosis will occur and the cell will lose water, water moves from higher water concentration to lower water concentration.
168885
Which of the following enhances or induces fusion of protoplasts?
1 Polyethylene glycol and sodium nitrate
2 IAA and kinetin
3 IAA and gibberellins
4 Sodium chloride and potassium chloride
Explanation:
A Polyethylene glycol (PEG) and sodium nitrate enhances fusion of protoplasts (protoplast fusion), protoplast fusion is physical phenomenon which occurs due to the fusion of protoplast (cell without cell wall) of two more cell. Polyethylene Glycol and sodium nitrate are mostcommonly used protoplast fusion inducing agents which are commonly known as chemical fucogens.
AIPMT-2015
Cell : Structure and Functions
168886
A protoplast is a cell
1 Without cell wall
2 Without plasma membrane
3 Without nucleus
4 Undergoing division
Explanation:
A A protoplast in a cell without cell wall. It is a plant, bacterial or fungal cell that had its cell wall removed, either completely or partially via mechanical, chemical or enzymatic actions. The colour less material comprising the living part of a cell, including the cytoplasm nucleus and other organelles.
AIPMT (Re-Exam)-2015
Cell : Structure and Functions
168887
Match the following and select the correct answer:
A. Centriole
(i) Infoldings in mitochondria
B. Chlorophyll
(ii) Thylakoids
C. Cristae
(iii) Nucleic acids
D. Ribozymes
(iv) Basal body cilia or flagella
1 A - (iv) B - (ii) C - (i) D - (iii)
2 A - (i) B - (ii) C - (iv) D - (iii)
3 A - (i) B - (iii) C - (ii) D - (iv)
4 A - (iv) B - (iii) C - (i) D - (ii)
Explanation:
A Basal bodies of eukaryotes are modified centrioles that give rise to cilia and flagella. Have \(\mathrm{Mg}^{+}\) as central element. Chlorophyll is found in high concentrations in chloroplasts of plant cells. They are vital for photosynthesis and are specifically arranged in and around photo systems that are embedded in the thylakoid membranes of chloroplasts. The inner membrane of the mitochondrion fold inwards, forming the cristae. The cristae increase the surface area to increase the productivity of cellular respiration. Ribosome's, also termed RNA molecules are capable of catalyzing specific biochemical reactions are ribonucleic acid that are self splicing.
AIPMT-2014
Cell : Structure and Functions
168888
A human RBC is placed in \(1.5 \%\) salt solution. It will :-
1 Swell up
2 Shrink
3 Remain unaffected
4 Burst.
Explanation:
B Human RBC isotonic for \(0.9 \%\) salt solution water moves from high conc. to low concentration human \(\mathrm{RBC}=1.5 \%\) salt solution RBCs is an animal cell when a animal cell is placed in \(1.5 \% \mathrm{NaCl}\) the cell shrinks, because, when a cell is placed in high salt concentration exosmosis will occur and the cell will lose water, water moves from higher water concentration to lower water concentration.
