168889
In plant cells peroxisomes are associated with:
1 Photorespiration
2 Phototropism
3 Photoperiodism
4 Photosynthesis
Explanation:
A Peroxisomes or microbodies are small organelle which contains reducing and oxidizing enzyme catalase, it helps in breakdown of long chain fatty acids through \(\beta\)-oxidation. Peroxysome produces two plant hormone which are associated with chloroplast and mitochondria and help in photorespiration. Peroxisomes were one of the last major cellular organelles to be discovered. In plant cells peroxisomes are associated with photorespiration.
AIPMT-1993
Cell : Structure and Functions
168890
HIV virus affect ...... in AIDS patient.
1 cytotoxic T-cell
2 \(\mathrm{M}-\mathrm{N}\) cell
3 suppressor cell
4 helper T-cells
Explanation:
D \(\mathrm{HIV}\) finds the white blood cells called \(\mathrm{CD}_{4}\) cells. HIV finds to the \(\mathrm{CD}_{4}\) molecule on the surface of helper T-cells and replicates within them. This results in destruction of \(\mathrm{CD}_{4}+\mathrm{T}\) - cells and leads to a steady decline in this population of T-cells. The definition of Progressive and slow loss of \(\mathrm{CD}_{4}+\mathrm{T}\) cells is not clear. T-cells \(\rightarrow\) Also called T- lymphocytes are major components of the adaptive immune system. Their role include - directly killing infected host cells, Activating other immune cells Producing cytokines and regulating the immune response. T-cells mainly 2 types- Cytotoxic T-cells Helper-T-cells
Punjab MET-2008
Cell : Structure and Functions
168892
Which of the following gland is often referred in relation with AIDS?
1 Thyroid
2 Thymus
3 Adrenal
4 Pancreas
Explanation:
B The thymus is a primary lymphoid organ where \(T\) cells or \(T\)-lymphocytes mature. \(T\) cells are critical to the adaptive immune system, where the body adapts specifically to foreign invaders. The HIV virus causes an acquired \(\mathrm{T}\)-Cell immunodeficiency syndrome (AIDS) by sporadically killing \(\mathrm{CD}_{4}+\mathrm{T}\)-cells. Where as the major effect of the virus is on mature peripheral \(\mathrm{T}\) cells, HIV can also infect developing thymocytes in the thymus most of which express \(\mathrm{CD}_{4}\). - Thymus gland is an endocrine gland present in chest between the lung and behind the breast bone/sternum. Thymus and bone marrow creates special immune system cells called lymphocytes. Lymphocytes are 2 type - T-Lymphocyte, B-Lymphocyte.
WB JEE-2007
Cell : Structure and Functions
168894
A feature of peroxisome in our body is
1 they are associated with synthesis and storage of lipids
2 they contain oxidising enzymes and promotes gluconeogenesis
3 they contain oxygenase a detoxification enzyme
4 They are not found in intact cells
Explanation:
B The peroxisome is a single membrane bound organelles which contains oxidative enzymes and is responsible for lipid production and oxidation reactions within the cell. The important oxidation reactions of peroxisome within a cell are oxidation or breakdown of excess purines ie, adenosines monophosphate to uric acid. It contains the enzyme called D- amino acid oxidase which oxidises amino acids. It also oxidase or metabolises alcohol and drugs in the liver by paroxysmal catalase.
MGIMS Wardha-2015
Cell : Structure and Functions
168895
Which of the following test is used for AIDS ?
1 ELISA test
2 Western blot test
3 P.C.R.
4 None of these
Explanation:
A ELISA Stands for enzyme linked immunoassay. It is commonly used laboratory test to detect antibodies in the blood. An antibody is a protein produced by the body's immune system when it detects harmful substances called antigens. - Western blot is often used in research to separate and identify proteins. In this technique a mixture of proteins is separated based on molecular weight and thus by type through gel electrophoresis. - PCR (Polymerase chain reaction) used to rapid make several copies of specific DNA sample to diagnose certain infectious disease and genetic changes.
168889
In plant cells peroxisomes are associated with:
1 Photorespiration
2 Phototropism
3 Photoperiodism
4 Photosynthesis
Explanation:
A Peroxisomes or microbodies are small organelle which contains reducing and oxidizing enzyme catalase, it helps in breakdown of long chain fatty acids through \(\beta\)-oxidation. Peroxysome produces two plant hormone which are associated with chloroplast and mitochondria and help in photorespiration. Peroxisomes were one of the last major cellular organelles to be discovered. In plant cells peroxisomes are associated with photorespiration.
AIPMT-1993
Cell : Structure and Functions
168890
HIV virus affect ...... in AIDS patient.
1 cytotoxic T-cell
2 \(\mathrm{M}-\mathrm{N}\) cell
3 suppressor cell
4 helper T-cells
Explanation:
D \(\mathrm{HIV}\) finds the white blood cells called \(\mathrm{CD}_{4}\) cells. HIV finds to the \(\mathrm{CD}_{4}\) molecule on the surface of helper T-cells and replicates within them. This results in destruction of \(\mathrm{CD}_{4}+\mathrm{T}\) - cells and leads to a steady decline in this population of T-cells. The definition of Progressive and slow loss of \(\mathrm{CD}_{4}+\mathrm{T}\) cells is not clear. T-cells \(\rightarrow\) Also called T- lymphocytes are major components of the adaptive immune system. Their role include - directly killing infected host cells, Activating other immune cells Producing cytokines and regulating the immune response. T-cells mainly 2 types- Cytotoxic T-cells Helper-T-cells
Punjab MET-2008
Cell : Structure and Functions
168892
Which of the following gland is often referred in relation with AIDS?
1 Thyroid
2 Thymus
3 Adrenal
4 Pancreas
Explanation:
B The thymus is a primary lymphoid organ where \(T\) cells or \(T\)-lymphocytes mature. \(T\) cells are critical to the adaptive immune system, where the body adapts specifically to foreign invaders. The HIV virus causes an acquired \(\mathrm{T}\)-Cell immunodeficiency syndrome (AIDS) by sporadically killing \(\mathrm{CD}_{4}+\mathrm{T}\)-cells. Where as the major effect of the virus is on mature peripheral \(\mathrm{T}\) cells, HIV can also infect developing thymocytes in the thymus most of which express \(\mathrm{CD}_{4}\). - Thymus gland is an endocrine gland present in chest between the lung and behind the breast bone/sternum. Thymus and bone marrow creates special immune system cells called lymphocytes. Lymphocytes are 2 type - T-Lymphocyte, B-Lymphocyte.
WB JEE-2007
Cell : Structure and Functions
168894
A feature of peroxisome in our body is
1 they are associated with synthesis and storage of lipids
2 they contain oxidising enzymes and promotes gluconeogenesis
3 they contain oxygenase a detoxification enzyme
4 They are not found in intact cells
Explanation:
B The peroxisome is a single membrane bound organelles which contains oxidative enzymes and is responsible for lipid production and oxidation reactions within the cell. The important oxidation reactions of peroxisome within a cell are oxidation or breakdown of excess purines ie, adenosines monophosphate to uric acid. It contains the enzyme called D- amino acid oxidase which oxidises amino acids. It also oxidase or metabolises alcohol and drugs in the liver by paroxysmal catalase.
MGIMS Wardha-2015
Cell : Structure and Functions
168895
Which of the following test is used for AIDS ?
1 ELISA test
2 Western blot test
3 P.C.R.
4 None of these
Explanation:
A ELISA Stands for enzyme linked immunoassay. It is commonly used laboratory test to detect antibodies in the blood. An antibody is a protein produced by the body's immune system when it detects harmful substances called antigens. - Western blot is often used in research to separate and identify proteins. In this technique a mixture of proteins is separated based on molecular weight and thus by type through gel electrophoresis. - PCR (Polymerase chain reaction) used to rapid make several copies of specific DNA sample to diagnose certain infectious disease and genetic changes.
168889
In plant cells peroxisomes are associated with:
1 Photorespiration
2 Phototropism
3 Photoperiodism
4 Photosynthesis
Explanation:
A Peroxisomes or microbodies are small organelle which contains reducing and oxidizing enzyme catalase, it helps in breakdown of long chain fatty acids through \(\beta\)-oxidation. Peroxysome produces two plant hormone which are associated with chloroplast and mitochondria and help in photorespiration. Peroxisomes were one of the last major cellular organelles to be discovered. In plant cells peroxisomes are associated with photorespiration.
AIPMT-1993
Cell : Structure and Functions
168890
HIV virus affect ...... in AIDS patient.
1 cytotoxic T-cell
2 \(\mathrm{M}-\mathrm{N}\) cell
3 suppressor cell
4 helper T-cells
Explanation:
D \(\mathrm{HIV}\) finds the white blood cells called \(\mathrm{CD}_{4}\) cells. HIV finds to the \(\mathrm{CD}_{4}\) molecule on the surface of helper T-cells and replicates within them. This results in destruction of \(\mathrm{CD}_{4}+\mathrm{T}\) - cells and leads to a steady decline in this population of T-cells. The definition of Progressive and slow loss of \(\mathrm{CD}_{4}+\mathrm{T}\) cells is not clear. T-cells \(\rightarrow\) Also called T- lymphocytes are major components of the adaptive immune system. Their role include - directly killing infected host cells, Activating other immune cells Producing cytokines and regulating the immune response. T-cells mainly 2 types- Cytotoxic T-cells Helper-T-cells
Punjab MET-2008
Cell : Structure and Functions
168892
Which of the following gland is often referred in relation with AIDS?
1 Thyroid
2 Thymus
3 Adrenal
4 Pancreas
Explanation:
B The thymus is a primary lymphoid organ where \(T\) cells or \(T\)-lymphocytes mature. \(T\) cells are critical to the adaptive immune system, where the body adapts specifically to foreign invaders. The HIV virus causes an acquired \(\mathrm{T}\)-Cell immunodeficiency syndrome (AIDS) by sporadically killing \(\mathrm{CD}_{4}+\mathrm{T}\)-cells. Where as the major effect of the virus is on mature peripheral \(\mathrm{T}\) cells, HIV can also infect developing thymocytes in the thymus most of which express \(\mathrm{CD}_{4}\). - Thymus gland is an endocrine gland present in chest between the lung and behind the breast bone/sternum. Thymus and bone marrow creates special immune system cells called lymphocytes. Lymphocytes are 2 type - T-Lymphocyte, B-Lymphocyte.
WB JEE-2007
Cell : Structure and Functions
168894
A feature of peroxisome in our body is
1 they are associated with synthesis and storage of lipids
2 they contain oxidising enzymes and promotes gluconeogenesis
3 they contain oxygenase a detoxification enzyme
4 They are not found in intact cells
Explanation:
B The peroxisome is a single membrane bound organelles which contains oxidative enzymes and is responsible for lipid production and oxidation reactions within the cell. The important oxidation reactions of peroxisome within a cell are oxidation or breakdown of excess purines ie, adenosines monophosphate to uric acid. It contains the enzyme called D- amino acid oxidase which oxidises amino acids. It also oxidase or metabolises alcohol and drugs in the liver by paroxysmal catalase.
MGIMS Wardha-2015
Cell : Structure and Functions
168895
Which of the following test is used for AIDS ?
1 ELISA test
2 Western blot test
3 P.C.R.
4 None of these
Explanation:
A ELISA Stands for enzyme linked immunoassay. It is commonly used laboratory test to detect antibodies in the blood. An antibody is a protein produced by the body's immune system when it detects harmful substances called antigens. - Western blot is often used in research to separate and identify proteins. In this technique a mixture of proteins is separated based on molecular weight and thus by type through gel electrophoresis. - PCR (Polymerase chain reaction) used to rapid make several copies of specific DNA sample to diagnose certain infectious disease and genetic changes.
168889
In plant cells peroxisomes are associated with:
1 Photorespiration
2 Phototropism
3 Photoperiodism
4 Photosynthesis
Explanation:
A Peroxisomes or microbodies are small organelle which contains reducing and oxidizing enzyme catalase, it helps in breakdown of long chain fatty acids through \(\beta\)-oxidation. Peroxysome produces two plant hormone which are associated with chloroplast and mitochondria and help in photorespiration. Peroxisomes were one of the last major cellular organelles to be discovered. In plant cells peroxisomes are associated with photorespiration.
AIPMT-1993
Cell : Structure and Functions
168890
HIV virus affect ...... in AIDS patient.
1 cytotoxic T-cell
2 \(\mathrm{M}-\mathrm{N}\) cell
3 suppressor cell
4 helper T-cells
Explanation:
D \(\mathrm{HIV}\) finds the white blood cells called \(\mathrm{CD}_{4}\) cells. HIV finds to the \(\mathrm{CD}_{4}\) molecule on the surface of helper T-cells and replicates within them. This results in destruction of \(\mathrm{CD}_{4}+\mathrm{T}\) - cells and leads to a steady decline in this population of T-cells. The definition of Progressive and slow loss of \(\mathrm{CD}_{4}+\mathrm{T}\) cells is not clear. T-cells \(\rightarrow\) Also called T- lymphocytes are major components of the adaptive immune system. Their role include - directly killing infected host cells, Activating other immune cells Producing cytokines and regulating the immune response. T-cells mainly 2 types- Cytotoxic T-cells Helper-T-cells
Punjab MET-2008
Cell : Structure and Functions
168892
Which of the following gland is often referred in relation with AIDS?
1 Thyroid
2 Thymus
3 Adrenal
4 Pancreas
Explanation:
B The thymus is a primary lymphoid organ where \(T\) cells or \(T\)-lymphocytes mature. \(T\) cells are critical to the adaptive immune system, where the body adapts specifically to foreign invaders. The HIV virus causes an acquired \(\mathrm{T}\)-Cell immunodeficiency syndrome (AIDS) by sporadically killing \(\mathrm{CD}_{4}+\mathrm{T}\)-cells. Where as the major effect of the virus is on mature peripheral \(\mathrm{T}\) cells, HIV can also infect developing thymocytes in the thymus most of which express \(\mathrm{CD}_{4}\). - Thymus gland is an endocrine gland present in chest between the lung and behind the breast bone/sternum. Thymus and bone marrow creates special immune system cells called lymphocytes. Lymphocytes are 2 type - T-Lymphocyte, B-Lymphocyte.
WB JEE-2007
Cell : Structure and Functions
168894
A feature of peroxisome in our body is
1 they are associated with synthesis and storage of lipids
2 they contain oxidising enzymes and promotes gluconeogenesis
3 they contain oxygenase a detoxification enzyme
4 They are not found in intact cells
Explanation:
B The peroxisome is a single membrane bound organelles which contains oxidative enzymes and is responsible for lipid production and oxidation reactions within the cell. The important oxidation reactions of peroxisome within a cell are oxidation or breakdown of excess purines ie, adenosines monophosphate to uric acid. It contains the enzyme called D- amino acid oxidase which oxidises amino acids. It also oxidase or metabolises alcohol and drugs in the liver by paroxysmal catalase.
MGIMS Wardha-2015
Cell : Structure and Functions
168895
Which of the following test is used for AIDS ?
1 ELISA test
2 Western blot test
3 P.C.R.
4 None of these
Explanation:
A ELISA Stands for enzyme linked immunoassay. It is commonly used laboratory test to detect antibodies in the blood. An antibody is a protein produced by the body's immune system when it detects harmful substances called antigens. - Western blot is often used in research to separate and identify proteins. In this technique a mixture of proteins is separated based on molecular weight and thus by type through gel electrophoresis. - PCR (Polymerase chain reaction) used to rapid make several copies of specific DNA sample to diagnose certain infectious disease and genetic changes.
168889
In plant cells peroxisomes are associated with:
1 Photorespiration
2 Phototropism
3 Photoperiodism
4 Photosynthesis
Explanation:
A Peroxisomes or microbodies are small organelle which contains reducing and oxidizing enzyme catalase, it helps in breakdown of long chain fatty acids through \(\beta\)-oxidation. Peroxysome produces two plant hormone which are associated with chloroplast and mitochondria and help in photorespiration. Peroxisomes were one of the last major cellular organelles to be discovered. In plant cells peroxisomes are associated with photorespiration.
AIPMT-1993
Cell : Structure and Functions
168890
HIV virus affect ...... in AIDS patient.
1 cytotoxic T-cell
2 \(\mathrm{M}-\mathrm{N}\) cell
3 suppressor cell
4 helper T-cells
Explanation:
D \(\mathrm{HIV}\) finds the white blood cells called \(\mathrm{CD}_{4}\) cells. HIV finds to the \(\mathrm{CD}_{4}\) molecule on the surface of helper T-cells and replicates within them. This results in destruction of \(\mathrm{CD}_{4}+\mathrm{T}\) - cells and leads to a steady decline in this population of T-cells. The definition of Progressive and slow loss of \(\mathrm{CD}_{4}+\mathrm{T}\) cells is not clear. T-cells \(\rightarrow\) Also called T- lymphocytes are major components of the adaptive immune system. Their role include - directly killing infected host cells, Activating other immune cells Producing cytokines and regulating the immune response. T-cells mainly 2 types- Cytotoxic T-cells Helper-T-cells
Punjab MET-2008
Cell : Structure and Functions
168892
Which of the following gland is often referred in relation with AIDS?
1 Thyroid
2 Thymus
3 Adrenal
4 Pancreas
Explanation:
B The thymus is a primary lymphoid organ where \(T\) cells or \(T\)-lymphocytes mature. \(T\) cells are critical to the adaptive immune system, where the body adapts specifically to foreign invaders. The HIV virus causes an acquired \(\mathrm{T}\)-Cell immunodeficiency syndrome (AIDS) by sporadically killing \(\mathrm{CD}_{4}+\mathrm{T}\)-cells. Where as the major effect of the virus is on mature peripheral \(\mathrm{T}\) cells, HIV can also infect developing thymocytes in the thymus most of which express \(\mathrm{CD}_{4}\). - Thymus gland is an endocrine gland present in chest between the lung and behind the breast bone/sternum. Thymus and bone marrow creates special immune system cells called lymphocytes. Lymphocytes are 2 type - T-Lymphocyte, B-Lymphocyte.
WB JEE-2007
Cell : Structure and Functions
168894
A feature of peroxisome in our body is
1 they are associated with synthesis and storage of lipids
2 they contain oxidising enzymes and promotes gluconeogenesis
3 they contain oxygenase a detoxification enzyme
4 They are not found in intact cells
Explanation:
B The peroxisome is a single membrane bound organelles which contains oxidative enzymes and is responsible for lipid production and oxidation reactions within the cell. The important oxidation reactions of peroxisome within a cell are oxidation or breakdown of excess purines ie, adenosines monophosphate to uric acid. It contains the enzyme called D- amino acid oxidase which oxidises amino acids. It also oxidase or metabolises alcohol and drugs in the liver by paroxysmal catalase.
MGIMS Wardha-2015
Cell : Structure and Functions
168895
Which of the following test is used for AIDS ?
1 ELISA test
2 Western blot test
3 P.C.R.
4 None of these
Explanation:
A ELISA Stands for enzyme linked immunoassay. It is commonly used laboratory test to detect antibodies in the blood. An antibody is a protein produced by the body's immune system when it detects harmful substances called antigens. - Western blot is often used in research to separate and identify proteins. In this technique a mixture of proteins is separated based on molecular weight and thus by type through gel electrophoresis. - PCR (Polymerase chain reaction) used to rapid make several copies of specific DNA sample to diagnose certain infectious disease and genetic changes.
