169342
Which of the following reaction does not take place in the cell organelle, that is referred to as "Power house of the cell"?
1 Glycine decarboxylation
2 Glyceraldehyde 3-phosphate hydrogenation
3 Fumaric acid hydration
4 Cytochrome oxidation
Explanation:
Exp:B Glyceraldehyde 3-Phosphate dehydrogenation does not take place in the cell organelle that is referred to as "power house of the cell" It is found in cytoplasm during glycolysis other three reactions take place in mitochondria. - Cytochrome oxidation is the process by which cytochrome oxidase, the last enzyme in the electron transport chain, reduces molecular oxygen to water This process help in the translocation of proton across the mitochondrial membrane, which creates a proton gradient that is used synthesize ATP. - Glycine decarboxylation : It is a metabolic oncogene that links glycine metabolism with tumerigenesis. - Fumaric acid hydration : The monoanion of fumaric acid has been shown to undergo hydration uncatalyzed by any external agents, while crotonic acid anion does not undergo such a reaction.
AP EAMCET-2003
Cell : Structure and Functions
169360
Which factor is responsible for inhibition of enzymatic process during feed back:
1 Substrate
2 Enzymes
3 End product
4 Temperature
Explanation:
Exp:C Feedback inhibition or end product is the inhibition of the activity of an enzyme catalysing some early reactions of the series by the end product of the metabolic pathway. For example a substrate A is converted into a product \(\mathrm{F}\) through \(\mathrm{B}, \mathrm{C}, \mathrm{D}\) and \(\mathrm{E}\) intermediate products. As the concentration of end product \(F\) increases, it diffuses to allosteric enzyme (E), causing a reduced synthesis of the product B which in turn lowers the rate of enzymatic reactions in rest of the pathway. Fig: Feedback inhibition: Product inhibits the action of enzyme \(E\)
AIPMT-2000
Cell : Structure and Functions
169361
Which of the following type of plastids does not contain stored food material?
1 Amyloplasts
2 Chromoplasts
3 Elaioplasts
4 Aleuroplasts
Explanation:
Exp:B Chromoplasts are yellow or reddish in colour because of the presence of carotenoid pigments. - Chromoplasts are formed either from leucoplasts or chloroplasts. Chromoplasts provide colour to many flowers for attracting pollinating insects. They provide bright red or orange colour to fruits for attracting animals for dispersal.Chromoplast is responsible for the colour not for food storage. - Amyloplasts e.g. potato tuber, Elaioplasts or lipidoplasts or oleoplasts are colourless plastids which store lipids e.g endosperm cells of castor seed . - Aleuroplasts or proteioplasts or proteinoplasts are protein storing plastids, eg. aleurone cells of maize grain.
Assam CEE-2014
Cell : Structure and Functions
169362
A pigment concerned with both floral induction and seed germination is :
1 anthocyanin
2 phytochrome
3 phycocyanin
4 xanthophylls
Explanation:
:Phytochrome is a kind of pigments which absorbs red and for red light and its light absorbing region in closely associated with protein. Pytochrome exists in two forms. - The Pr form- It absorbs red light and gets converted into its active form i.e. pfr form. - The Pfr form- It absorbs for red light and gets converted into Pr form Ativity of phytochrome. Elongation of leaf, stem and petiole, germination of pollen, fern spores, and seed etc.
169342
Which of the following reaction does not take place in the cell organelle, that is referred to as "Power house of the cell"?
1 Glycine decarboxylation
2 Glyceraldehyde 3-phosphate hydrogenation
3 Fumaric acid hydration
4 Cytochrome oxidation
Explanation:
Exp:B Glyceraldehyde 3-Phosphate dehydrogenation does not take place in the cell organelle that is referred to as "power house of the cell" It is found in cytoplasm during glycolysis other three reactions take place in mitochondria. - Cytochrome oxidation is the process by which cytochrome oxidase, the last enzyme in the electron transport chain, reduces molecular oxygen to water This process help in the translocation of proton across the mitochondrial membrane, which creates a proton gradient that is used synthesize ATP. - Glycine decarboxylation : It is a metabolic oncogene that links glycine metabolism with tumerigenesis. - Fumaric acid hydration : The monoanion of fumaric acid has been shown to undergo hydration uncatalyzed by any external agents, while crotonic acid anion does not undergo such a reaction.
AP EAMCET-2003
Cell : Structure and Functions
169360
Which factor is responsible for inhibition of enzymatic process during feed back:
1 Substrate
2 Enzymes
3 End product
4 Temperature
Explanation:
Exp:C Feedback inhibition or end product is the inhibition of the activity of an enzyme catalysing some early reactions of the series by the end product of the metabolic pathway. For example a substrate A is converted into a product \(\mathrm{F}\) through \(\mathrm{B}, \mathrm{C}, \mathrm{D}\) and \(\mathrm{E}\) intermediate products. As the concentration of end product \(F\) increases, it diffuses to allosteric enzyme (E), causing a reduced synthesis of the product B which in turn lowers the rate of enzymatic reactions in rest of the pathway. Fig: Feedback inhibition: Product inhibits the action of enzyme \(E\)
AIPMT-2000
Cell : Structure and Functions
169361
Which of the following type of plastids does not contain stored food material?
1 Amyloplasts
2 Chromoplasts
3 Elaioplasts
4 Aleuroplasts
Explanation:
Exp:B Chromoplasts are yellow or reddish in colour because of the presence of carotenoid pigments. - Chromoplasts are formed either from leucoplasts or chloroplasts. Chromoplasts provide colour to many flowers for attracting pollinating insects. They provide bright red or orange colour to fruits for attracting animals for dispersal.Chromoplast is responsible for the colour not for food storage. - Amyloplasts e.g. potato tuber, Elaioplasts or lipidoplasts or oleoplasts are colourless plastids which store lipids e.g endosperm cells of castor seed . - Aleuroplasts or proteioplasts or proteinoplasts are protein storing plastids, eg. aleurone cells of maize grain.
Assam CEE-2014
Cell : Structure and Functions
169362
A pigment concerned with both floral induction and seed germination is :
1 anthocyanin
2 phytochrome
3 phycocyanin
4 xanthophylls
Explanation:
:Phytochrome is a kind of pigments which absorbs red and for red light and its light absorbing region in closely associated with protein. Pytochrome exists in two forms. - The Pr form- It absorbs red light and gets converted into its active form i.e. pfr form. - The Pfr form- It absorbs for red light and gets converted into Pr form Ativity of phytochrome. Elongation of leaf, stem and petiole, germination of pollen, fern spores, and seed etc.
169342
Which of the following reaction does not take place in the cell organelle, that is referred to as "Power house of the cell"?
1 Glycine decarboxylation
2 Glyceraldehyde 3-phosphate hydrogenation
3 Fumaric acid hydration
4 Cytochrome oxidation
Explanation:
Exp:B Glyceraldehyde 3-Phosphate dehydrogenation does not take place in the cell organelle that is referred to as "power house of the cell" It is found in cytoplasm during glycolysis other three reactions take place in mitochondria. - Cytochrome oxidation is the process by which cytochrome oxidase, the last enzyme in the electron transport chain, reduces molecular oxygen to water This process help in the translocation of proton across the mitochondrial membrane, which creates a proton gradient that is used synthesize ATP. - Glycine decarboxylation : It is a metabolic oncogene that links glycine metabolism with tumerigenesis. - Fumaric acid hydration : The monoanion of fumaric acid has been shown to undergo hydration uncatalyzed by any external agents, while crotonic acid anion does not undergo such a reaction.
AP EAMCET-2003
Cell : Structure and Functions
169360
Which factor is responsible for inhibition of enzymatic process during feed back:
1 Substrate
2 Enzymes
3 End product
4 Temperature
Explanation:
Exp:C Feedback inhibition or end product is the inhibition of the activity of an enzyme catalysing some early reactions of the series by the end product of the metabolic pathway. For example a substrate A is converted into a product \(\mathrm{F}\) through \(\mathrm{B}, \mathrm{C}, \mathrm{D}\) and \(\mathrm{E}\) intermediate products. As the concentration of end product \(F\) increases, it diffuses to allosteric enzyme (E), causing a reduced synthesis of the product B which in turn lowers the rate of enzymatic reactions in rest of the pathway. Fig: Feedback inhibition: Product inhibits the action of enzyme \(E\)
AIPMT-2000
Cell : Structure and Functions
169361
Which of the following type of plastids does not contain stored food material?
1 Amyloplasts
2 Chromoplasts
3 Elaioplasts
4 Aleuroplasts
Explanation:
Exp:B Chromoplasts are yellow or reddish in colour because of the presence of carotenoid pigments. - Chromoplasts are formed either from leucoplasts or chloroplasts. Chromoplasts provide colour to many flowers for attracting pollinating insects. They provide bright red or orange colour to fruits for attracting animals for dispersal.Chromoplast is responsible for the colour not for food storage. - Amyloplasts e.g. potato tuber, Elaioplasts or lipidoplasts or oleoplasts are colourless plastids which store lipids e.g endosperm cells of castor seed . - Aleuroplasts or proteioplasts or proteinoplasts are protein storing plastids, eg. aleurone cells of maize grain.
Assam CEE-2014
Cell : Structure and Functions
169362
A pigment concerned with both floral induction and seed germination is :
1 anthocyanin
2 phytochrome
3 phycocyanin
4 xanthophylls
Explanation:
:Phytochrome is a kind of pigments which absorbs red and for red light and its light absorbing region in closely associated with protein. Pytochrome exists in two forms. - The Pr form- It absorbs red light and gets converted into its active form i.e. pfr form. - The Pfr form- It absorbs for red light and gets converted into Pr form Ativity of phytochrome. Elongation of leaf, stem and petiole, germination of pollen, fern spores, and seed etc.
169342
Which of the following reaction does not take place in the cell organelle, that is referred to as "Power house of the cell"?
1 Glycine decarboxylation
2 Glyceraldehyde 3-phosphate hydrogenation
3 Fumaric acid hydration
4 Cytochrome oxidation
Explanation:
Exp:B Glyceraldehyde 3-Phosphate dehydrogenation does not take place in the cell organelle that is referred to as "power house of the cell" It is found in cytoplasm during glycolysis other three reactions take place in mitochondria. - Cytochrome oxidation is the process by which cytochrome oxidase, the last enzyme in the electron transport chain, reduces molecular oxygen to water This process help in the translocation of proton across the mitochondrial membrane, which creates a proton gradient that is used synthesize ATP. - Glycine decarboxylation : It is a metabolic oncogene that links glycine metabolism with tumerigenesis. - Fumaric acid hydration : The monoanion of fumaric acid has been shown to undergo hydration uncatalyzed by any external agents, while crotonic acid anion does not undergo such a reaction.
AP EAMCET-2003
Cell : Structure and Functions
169360
Which factor is responsible for inhibition of enzymatic process during feed back:
1 Substrate
2 Enzymes
3 End product
4 Temperature
Explanation:
Exp:C Feedback inhibition or end product is the inhibition of the activity of an enzyme catalysing some early reactions of the series by the end product of the metabolic pathway. For example a substrate A is converted into a product \(\mathrm{F}\) through \(\mathrm{B}, \mathrm{C}, \mathrm{D}\) and \(\mathrm{E}\) intermediate products. As the concentration of end product \(F\) increases, it diffuses to allosteric enzyme (E), causing a reduced synthesis of the product B which in turn lowers the rate of enzymatic reactions in rest of the pathway. Fig: Feedback inhibition: Product inhibits the action of enzyme \(E\)
AIPMT-2000
Cell : Structure and Functions
169361
Which of the following type of plastids does not contain stored food material?
1 Amyloplasts
2 Chromoplasts
3 Elaioplasts
4 Aleuroplasts
Explanation:
Exp:B Chromoplasts are yellow or reddish in colour because of the presence of carotenoid pigments. - Chromoplasts are formed either from leucoplasts or chloroplasts. Chromoplasts provide colour to many flowers for attracting pollinating insects. They provide bright red or orange colour to fruits for attracting animals for dispersal.Chromoplast is responsible for the colour not for food storage. - Amyloplasts e.g. potato tuber, Elaioplasts or lipidoplasts or oleoplasts are colourless plastids which store lipids e.g endosperm cells of castor seed . - Aleuroplasts or proteioplasts or proteinoplasts are protein storing plastids, eg. aleurone cells of maize grain.
Assam CEE-2014
Cell : Structure and Functions
169362
A pigment concerned with both floral induction and seed germination is :
1 anthocyanin
2 phytochrome
3 phycocyanin
4 xanthophylls
Explanation:
:Phytochrome is a kind of pigments which absorbs red and for red light and its light absorbing region in closely associated with protein. Pytochrome exists in two forms. - The Pr form- It absorbs red light and gets converted into its active form i.e. pfr form. - The Pfr form- It absorbs for red light and gets converted into Pr form Ativity of phytochrome. Elongation of leaf, stem and petiole, germination of pollen, fern spores, and seed etc.
