238161
The compounds produced when RuBP reacts with $\mathrm{O}_{2}$ are
1 3 - phosphoglyceric acid.
2 G-3-P and DHAP
3 Phosphoglycerate and Phosphoglycolate
4 Phosphoglycolate and Glyceraldehyde - 3.P
Explanation:
C - $\left[\left(\mathrm{RuBP}\right.\right.$ reacts with oxygen $\left(\mathrm{O}_{2}\right)$ instead of carbon dioxide $\left(\mathrm{CO}_{2}\right)$ during the process of photosynthesis, a phenomenon called photorespiration occurs.) - Then it forms a six-carbon compound called 2carboxy-3-keto-arabinitol 1,5-bisphosphate. This compound is unstable and quickly breaks down into three-carbon compounds-phosphoglycerate and phosphoglycolate. - Phosphoglycerate is a precursor to the calvin cycle, which is the main pathway for photosynthesis. - Phosphoglycolate is a wasteful product that is reduced back into the calvin cycle.
AP EAPCET-23.05.2023
Photosynthesis in higher plants
238159
Photorespiration is favoured by
1 high temperature and low $\mathrm{O}_{2}$
2 high humidity and temperature
3 high $\mathrm{O}_{2}$ and low $\mathrm{CO}_{2}$
4 high $\mathrm{CO}_{2}$ and low $\mathrm{O}_{2}$
Explanation:
C Photorespiration is favored by high oxygen and low $\mathrm{CO}_{2}$ conditions. Photorespiration is light induced oxidation of photosynthetic intermediates with the help of oxygen. Due to this condition, $\mathrm{RuBisCO}$ behaves as carboxylase and it enters the calvin or $\mathrm{C}_{3}$ cycle. It occurs when the $\mathrm{CO}_{2}$ level inside a leaf become low or high $\mathrm{O}_{2}$ concentration, high intensity and high temp.
JIPMER-2003 / AIPMT-1996
Photosynthesis in higher plants
238163
Choose the correct statements.
1 A, B,
2 B, C, DC
3 A, C, D
4 A, B, D
Explanation:
B Photorespiratoin is a wasteful pathway that occurs when RuBisCO acts on $\mathrm{O}_{2}$ rather than $\mathrm{CO}_{2}$ and does not produce ATP or NADPH. $\mathrm{C}_{4}$ plants are adapted to dry hot tropical region. In $\mathrm{C}_{4}$ plants photorespiration does not occur so $\mathrm{C}_{4}$ pathways is more efficient than the $\mathrm{C}_{3}$ pathway. In the leaves of $\mathrm{C}_{4}$ plants, special type of anatomy is present in which bundle sheath cells are having large number of chloroplasts, thick wall with no inter cellular space, called kranz anatomy.
TS EAMCET-09.08.2021 Shift-II
Photosynthesis in higher plants
238168
Which of the option is correct for photorespiration?
1 In Chloroplast, glycerate forms glycine
2 In Peroxisome, glycerate forms phosphoglycolate
3 In Mitochondrion, glycine forms serine
4 In Bundle sheath, serine forms glycine
Explanation:
C The phosphoglycolate which is formed in the chloroplast is transferred to the peroxisome in the form of glycolate. The glycolate in peroxisome is converted to glycine through some intermediates and then transferred to the mitochondria. In the mitochondria 2 molecules of glycine form a molecule of serine, $\mathrm{CO}_{2}$ and $\mathrm{NH}_{3}$ and serine is transferred to peroxisome. In chloroplast $\rightarrow$ Glycerate $\rightarrow 3$ phosphoglycerate +2 phosphoglycolate. In peroxisome $\rightarrow$ Glycolate oxidase $\rightarrow \mathrm{H}_{2} \mathrm{O}_{2}+$ glyoxalate $\rightarrow$ Glycine.
238161
The compounds produced when RuBP reacts with $\mathrm{O}_{2}$ are
1 3 - phosphoglyceric acid.
2 G-3-P and DHAP
3 Phosphoglycerate and Phosphoglycolate
4 Phosphoglycolate and Glyceraldehyde - 3.P
Explanation:
C - $\left[\left(\mathrm{RuBP}\right.\right.$ reacts with oxygen $\left(\mathrm{O}_{2}\right)$ instead of carbon dioxide $\left(\mathrm{CO}_{2}\right)$ during the process of photosynthesis, a phenomenon called photorespiration occurs.) - Then it forms a six-carbon compound called 2carboxy-3-keto-arabinitol 1,5-bisphosphate. This compound is unstable and quickly breaks down into three-carbon compounds-phosphoglycerate and phosphoglycolate. - Phosphoglycerate is a precursor to the calvin cycle, which is the main pathway for photosynthesis. - Phosphoglycolate is a wasteful product that is reduced back into the calvin cycle.
AP EAPCET-23.05.2023
Photosynthesis in higher plants
238159
Photorespiration is favoured by
1 high temperature and low $\mathrm{O}_{2}$
2 high humidity and temperature
3 high $\mathrm{O}_{2}$ and low $\mathrm{CO}_{2}$
4 high $\mathrm{CO}_{2}$ and low $\mathrm{O}_{2}$
Explanation:
C Photorespiration is favored by high oxygen and low $\mathrm{CO}_{2}$ conditions. Photorespiration is light induced oxidation of photosynthetic intermediates with the help of oxygen. Due to this condition, $\mathrm{RuBisCO}$ behaves as carboxylase and it enters the calvin or $\mathrm{C}_{3}$ cycle. It occurs when the $\mathrm{CO}_{2}$ level inside a leaf become low or high $\mathrm{O}_{2}$ concentration, high intensity and high temp.
JIPMER-2003 / AIPMT-1996
Photosynthesis in higher plants
238163
Choose the correct statements.
1 A, B,
2 B, C, DC
3 A, C, D
4 A, B, D
Explanation:
B Photorespiratoin is a wasteful pathway that occurs when RuBisCO acts on $\mathrm{O}_{2}$ rather than $\mathrm{CO}_{2}$ and does not produce ATP or NADPH. $\mathrm{C}_{4}$ plants are adapted to dry hot tropical region. In $\mathrm{C}_{4}$ plants photorespiration does not occur so $\mathrm{C}_{4}$ pathways is more efficient than the $\mathrm{C}_{3}$ pathway. In the leaves of $\mathrm{C}_{4}$ plants, special type of anatomy is present in which bundle sheath cells are having large number of chloroplasts, thick wall with no inter cellular space, called kranz anatomy.
TS EAMCET-09.08.2021 Shift-II
Photosynthesis in higher plants
238168
Which of the option is correct for photorespiration?
1 In Chloroplast, glycerate forms glycine
2 In Peroxisome, glycerate forms phosphoglycolate
3 In Mitochondrion, glycine forms serine
4 In Bundle sheath, serine forms glycine
Explanation:
C The phosphoglycolate which is formed in the chloroplast is transferred to the peroxisome in the form of glycolate. The glycolate in peroxisome is converted to glycine through some intermediates and then transferred to the mitochondria. In the mitochondria 2 molecules of glycine form a molecule of serine, $\mathrm{CO}_{2}$ and $\mathrm{NH}_{3}$ and serine is transferred to peroxisome. In chloroplast $\rightarrow$ Glycerate $\rightarrow 3$ phosphoglycerate +2 phosphoglycolate. In peroxisome $\rightarrow$ Glycolate oxidase $\rightarrow \mathrm{H}_{2} \mathrm{O}_{2}+$ glyoxalate $\rightarrow$ Glycine.
238161
The compounds produced when RuBP reacts with $\mathrm{O}_{2}$ are
1 3 - phosphoglyceric acid.
2 G-3-P and DHAP
3 Phosphoglycerate and Phosphoglycolate
4 Phosphoglycolate and Glyceraldehyde - 3.P
Explanation:
C - $\left[\left(\mathrm{RuBP}\right.\right.$ reacts with oxygen $\left(\mathrm{O}_{2}\right)$ instead of carbon dioxide $\left(\mathrm{CO}_{2}\right)$ during the process of photosynthesis, a phenomenon called photorespiration occurs.) - Then it forms a six-carbon compound called 2carboxy-3-keto-arabinitol 1,5-bisphosphate. This compound is unstable and quickly breaks down into three-carbon compounds-phosphoglycerate and phosphoglycolate. - Phosphoglycerate is a precursor to the calvin cycle, which is the main pathway for photosynthesis. - Phosphoglycolate is a wasteful product that is reduced back into the calvin cycle.
AP EAPCET-23.05.2023
Photosynthesis in higher plants
238159
Photorespiration is favoured by
1 high temperature and low $\mathrm{O}_{2}$
2 high humidity and temperature
3 high $\mathrm{O}_{2}$ and low $\mathrm{CO}_{2}$
4 high $\mathrm{CO}_{2}$ and low $\mathrm{O}_{2}$
Explanation:
C Photorespiration is favored by high oxygen and low $\mathrm{CO}_{2}$ conditions. Photorespiration is light induced oxidation of photosynthetic intermediates with the help of oxygen. Due to this condition, $\mathrm{RuBisCO}$ behaves as carboxylase and it enters the calvin or $\mathrm{C}_{3}$ cycle. It occurs when the $\mathrm{CO}_{2}$ level inside a leaf become low or high $\mathrm{O}_{2}$ concentration, high intensity and high temp.
JIPMER-2003 / AIPMT-1996
Photosynthesis in higher plants
238163
Choose the correct statements.
1 A, B,
2 B, C, DC
3 A, C, D
4 A, B, D
Explanation:
B Photorespiratoin is a wasteful pathway that occurs when RuBisCO acts on $\mathrm{O}_{2}$ rather than $\mathrm{CO}_{2}$ and does not produce ATP or NADPH. $\mathrm{C}_{4}$ plants are adapted to dry hot tropical region. In $\mathrm{C}_{4}$ plants photorespiration does not occur so $\mathrm{C}_{4}$ pathways is more efficient than the $\mathrm{C}_{3}$ pathway. In the leaves of $\mathrm{C}_{4}$ plants, special type of anatomy is present in which bundle sheath cells are having large number of chloroplasts, thick wall with no inter cellular space, called kranz anatomy.
TS EAMCET-09.08.2021 Shift-II
Photosynthesis in higher plants
238168
Which of the option is correct for photorespiration?
1 In Chloroplast, glycerate forms glycine
2 In Peroxisome, glycerate forms phosphoglycolate
3 In Mitochondrion, glycine forms serine
4 In Bundle sheath, serine forms glycine
Explanation:
C The phosphoglycolate which is formed in the chloroplast is transferred to the peroxisome in the form of glycolate. The glycolate in peroxisome is converted to glycine through some intermediates and then transferred to the mitochondria. In the mitochondria 2 molecules of glycine form a molecule of serine, $\mathrm{CO}_{2}$ and $\mathrm{NH}_{3}$ and serine is transferred to peroxisome. In chloroplast $\rightarrow$ Glycerate $\rightarrow 3$ phosphoglycerate +2 phosphoglycolate. In peroxisome $\rightarrow$ Glycolate oxidase $\rightarrow \mathrm{H}_{2} \mathrm{O}_{2}+$ glyoxalate $\rightarrow$ Glycine.
238161
The compounds produced when RuBP reacts with $\mathrm{O}_{2}$ are
1 3 - phosphoglyceric acid.
2 G-3-P and DHAP
3 Phosphoglycerate and Phosphoglycolate
4 Phosphoglycolate and Glyceraldehyde - 3.P
Explanation:
C - $\left[\left(\mathrm{RuBP}\right.\right.$ reacts with oxygen $\left(\mathrm{O}_{2}\right)$ instead of carbon dioxide $\left(\mathrm{CO}_{2}\right)$ during the process of photosynthesis, a phenomenon called photorespiration occurs.) - Then it forms a six-carbon compound called 2carboxy-3-keto-arabinitol 1,5-bisphosphate. This compound is unstable and quickly breaks down into three-carbon compounds-phosphoglycerate and phosphoglycolate. - Phosphoglycerate is a precursor to the calvin cycle, which is the main pathway for photosynthesis. - Phosphoglycolate is a wasteful product that is reduced back into the calvin cycle.
AP EAPCET-23.05.2023
Photosynthesis in higher plants
238159
Photorespiration is favoured by
1 high temperature and low $\mathrm{O}_{2}$
2 high humidity and temperature
3 high $\mathrm{O}_{2}$ and low $\mathrm{CO}_{2}$
4 high $\mathrm{CO}_{2}$ and low $\mathrm{O}_{2}$
Explanation:
C Photorespiration is favored by high oxygen and low $\mathrm{CO}_{2}$ conditions. Photorespiration is light induced oxidation of photosynthetic intermediates with the help of oxygen. Due to this condition, $\mathrm{RuBisCO}$ behaves as carboxylase and it enters the calvin or $\mathrm{C}_{3}$ cycle. It occurs when the $\mathrm{CO}_{2}$ level inside a leaf become low or high $\mathrm{O}_{2}$ concentration, high intensity and high temp.
JIPMER-2003 / AIPMT-1996
Photosynthesis in higher plants
238163
Choose the correct statements.
1 A, B,
2 B, C, DC
3 A, C, D
4 A, B, D
Explanation:
B Photorespiratoin is a wasteful pathway that occurs when RuBisCO acts on $\mathrm{O}_{2}$ rather than $\mathrm{CO}_{2}$ and does not produce ATP or NADPH. $\mathrm{C}_{4}$ plants are adapted to dry hot tropical region. In $\mathrm{C}_{4}$ plants photorespiration does not occur so $\mathrm{C}_{4}$ pathways is more efficient than the $\mathrm{C}_{3}$ pathway. In the leaves of $\mathrm{C}_{4}$ plants, special type of anatomy is present in which bundle sheath cells are having large number of chloroplasts, thick wall with no inter cellular space, called kranz anatomy.
TS EAMCET-09.08.2021 Shift-II
Photosynthesis in higher plants
238168
Which of the option is correct for photorespiration?
1 In Chloroplast, glycerate forms glycine
2 In Peroxisome, glycerate forms phosphoglycolate
3 In Mitochondrion, glycine forms serine
4 In Bundle sheath, serine forms glycine
Explanation:
C The phosphoglycolate which is formed in the chloroplast is transferred to the peroxisome in the form of glycolate. The glycolate in peroxisome is converted to glycine through some intermediates and then transferred to the mitochondria. In the mitochondria 2 molecules of glycine form a molecule of serine, $\mathrm{CO}_{2}$ and $\mathrm{NH}_{3}$ and serine is transferred to peroxisome. In chloroplast $\rightarrow$ Glycerate $\rightarrow 3$ phosphoglycerate +2 phosphoglycolate. In peroxisome $\rightarrow$ Glycolate oxidase $\rightarrow \mathrm{H}_{2} \mathrm{O}_{2}+$ glyoxalate $\rightarrow$ Glycine.
