283705
In the mitochondrial matrix, pyruvate is first converted to acetyl $\mathrm{CoA}$ by a process called:
1 substrate level phosphorylation
2 dehydrogenation
3 oxidative decarboxylation
4 condensation
Explanation:
Exp:C In the mitochondrial matrix, pyruvate is the first converted to acetyl $\mathrm{CoA}$ by a process called oxidative decarboxylation. Dehydrogenation is the process by which hydrogen is removed from an organic compound to form a new chemical Condensation is the process by which water vapor in the air is changed into liquid water.
Tripura JEE-2019
Respiration in Plants
283706
Which one of the following metabolic conversions requires oxygen?
1 Glucose to pyruvate
2 Glucose to $\mathrm{CO}_{2}$ and ethanol
3 Glucose to lactate
4 Glucose to $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$
Explanation:
Exp:D Cellular respiration or respiration is the process by which cells breakdown glucose energy. $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$ are also released in the process. This can happen in the presence of oxygen it is known aerobic respiration. - During glycolysis, glucose is converted into pyruvate - Yeast converts glucose to ethanol and $\mathrm{CO}_{2}$ by anaerobic fermentation Glucose $\stackrel{\text { Fermentation }}{\longrightarrow}$ Ethanol $+\mathrm{CO}_{2}$ The conversion of glucose to lactate is known as anaerobic glycolysis (it does not require $\mathrm{O}_{2}$ )
KVPY SA-2019
Respiration in Plants
283708
In mitochondria, protons accumulate in the
1 Matrix
2 Outer membrane
3 Inner membrane
4 Intermembrane space
Explanation:
Exp:D During aerobic respiration, electrons move through the electron transport chain in mitochondria. As electron move, they loose energy, which is used to pump protons from the mitochondrial matrix to the intermembrane space.
AIPMT (Mains)-2011
Respiration in Plants
283709
Glycolate induces opening of stomata in :-
1 Presence of oxygen
2 Low $\mathrm{CO}_{2}$ conc.
3 $\mathrm{High} \mathrm{CO}_{2}$
4 $\mathrm{CO}_{2}$ absent
Explanation:
Exp:B Zelitch (1963) suggested that glycolic acid is formed in the guard cells. This acid is formed under low concentration of $\mathrm{CO}_{2}$. - Glycolate produced gives rise to carbohydrates under this condition osmotically active material is produced and ATP synthesis also takes place. - ATP is formed during glyoxylate-glycolate shuttle. - This ATP helps in the active pumping of water in the guard cells and stomata open. Stomata close when this process is reversed.
283705
In the mitochondrial matrix, pyruvate is first converted to acetyl $\mathrm{CoA}$ by a process called:
1 substrate level phosphorylation
2 dehydrogenation
3 oxidative decarboxylation
4 condensation
Explanation:
Exp:C In the mitochondrial matrix, pyruvate is the first converted to acetyl $\mathrm{CoA}$ by a process called oxidative decarboxylation. Dehydrogenation is the process by which hydrogen is removed from an organic compound to form a new chemical Condensation is the process by which water vapor in the air is changed into liquid water.
Tripura JEE-2019
Respiration in Plants
283706
Which one of the following metabolic conversions requires oxygen?
1 Glucose to pyruvate
2 Glucose to $\mathrm{CO}_{2}$ and ethanol
3 Glucose to lactate
4 Glucose to $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$
Explanation:
Exp:D Cellular respiration or respiration is the process by which cells breakdown glucose energy. $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$ are also released in the process. This can happen in the presence of oxygen it is known aerobic respiration. - During glycolysis, glucose is converted into pyruvate - Yeast converts glucose to ethanol and $\mathrm{CO}_{2}$ by anaerobic fermentation Glucose $\stackrel{\text { Fermentation }}{\longrightarrow}$ Ethanol $+\mathrm{CO}_{2}$ The conversion of glucose to lactate is known as anaerobic glycolysis (it does not require $\mathrm{O}_{2}$ )
KVPY SA-2019
Respiration in Plants
283708
In mitochondria, protons accumulate in the
1 Matrix
2 Outer membrane
3 Inner membrane
4 Intermembrane space
Explanation:
Exp:D During aerobic respiration, electrons move through the electron transport chain in mitochondria. As electron move, they loose energy, which is used to pump protons from the mitochondrial matrix to the intermembrane space.
AIPMT (Mains)-2011
Respiration in Plants
283709
Glycolate induces opening of stomata in :-
1 Presence of oxygen
2 Low $\mathrm{CO}_{2}$ conc.
3 $\mathrm{High} \mathrm{CO}_{2}$
4 $\mathrm{CO}_{2}$ absent
Explanation:
Exp:B Zelitch (1963) suggested that glycolic acid is formed in the guard cells. This acid is formed under low concentration of $\mathrm{CO}_{2}$. - Glycolate produced gives rise to carbohydrates under this condition osmotically active material is produced and ATP synthesis also takes place. - ATP is formed during glyoxylate-glycolate shuttle. - This ATP helps in the active pumping of water in the guard cells and stomata open. Stomata close when this process is reversed.
283705
In the mitochondrial matrix, pyruvate is first converted to acetyl $\mathrm{CoA}$ by a process called:
1 substrate level phosphorylation
2 dehydrogenation
3 oxidative decarboxylation
4 condensation
Explanation:
Exp:C In the mitochondrial matrix, pyruvate is the first converted to acetyl $\mathrm{CoA}$ by a process called oxidative decarboxylation. Dehydrogenation is the process by which hydrogen is removed from an organic compound to form a new chemical Condensation is the process by which water vapor in the air is changed into liquid water.
Tripura JEE-2019
Respiration in Plants
283706
Which one of the following metabolic conversions requires oxygen?
1 Glucose to pyruvate
2 Glucose to $\mathrm{CO}_{2}$ and ethanol
3 Glucose to lactate
4 Glucose to $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$
Explanation:
Exp:D Cellular respiration or respiration is the process by which cells breakdown glucose energy. $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$ are also released in the process. This can happen in the presence of oxygen it is known aerobic respiration. - During glycolysis, glucose is converted into pyruvate - Yeast converts glucose to ethanol and $\mathrm{CO}_{2}$ by anaerobic fermentation Glucose $\stackrel{\text { Fermentation }}{\longrightarrow}$ Ethanol $+\mathrm{CO}_{2}$ The conversion of glucose to lactate is known as anaerobic glycolysis (it does not require $\mathrm{O}_{2}$ )
KVPY SA-2019
Respiration in Plants
283708
In mitochondria, protons accumulate in the
1 Matrix
2 Outer membrane
3 Inner membrane
4 Intermembrane space
Explanation:
Exp:D During aerobic respiration, electrons move through the electron transport chain in mitochondria. As electron move, they loose energy, which is used to pump protons from the mitochondrial matrix to the intermembrane space.
AIPMT (Mains)-2011
Respiration in Plants
283709
Glycolate induces opening of stomata in :-
1 Presence of oxygen
2 Low $\mathrm{CO}_{2}$ conc.
3 $\mathrm{High} \mathrm{CO}_{2}$
4 $\mathrm{CO}_{2}$ absent
Explanation:
Exp:B Zelitch (1963) suggested that glycolic acid is formed in the guard cells. This acid is formed under low concentration of $\mathrm{CO}_{2}$. - Glycolate produced gives rise to carbohydrates under this condition osmotically active material is produced and ATP synthesis also takes place. - ATP is formed during glyoxylate-glycolate shuttle. - This ATP helps in the active pumping of water in the guard cells and stomata open. Stomata close when this process is reversed.
283705
In the mitochondrial matrix, pyruvate is first converted to acetyl $\mathrm{CoA}$ by a process called:
1 substrate level phosphorylation
2 dehydrogenation
3 oxidative decarboxylation
4 condensation
Explanation:
Exp:C In the mitochondrial matrix, pyruvate is the first converted to acetyl $\mathrm{CoA}$ by a process called oxidative decarboxylation. Dehydrogenation is the process by which hydrogen is removed from an organic compound to form a new chemical Condensation is the process by which water vapor in the air is changed into liquid water.
Tripura JEE-2019
Respiration in Plants
283706
Which one of the following metabolic conversions requires oxygen?
1 Glucose to pyruvate
2 Glucose to $\mathrm{CO}_{2}$ and ethanol
3 Glucose to lactate
4 Glucose to $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$
Explanation:
Exp:D Cellular respiration or respiration is the process by which cells breakdown glucose energy. $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$ are also released in the process. This can happen in the presence of oxygen it is known aerobic respiration. - During glycolysis, glucose is converted into pyruvate - Yeast converts glucose to ethanol and $\mathrm{CO}_{2}$ by anaerobic fermentation Glucose $\stackrel{\text { Fermentation }}{\longrightarrow}$ Ethanol $+\mathrm{CO}_{2}$ The conversion of glucose to lactate is known as anaerobic glycolysis (it does not require $\mathrm{O}_{2}$ )
KVPY SA-2019
Respiration in Plants
283708
In mitochondria, protons accumulate in the
1 Matrix
2 Outer membrane
3 Inner membrane
4 Intermembrane space
Explanation:
Exp:D During aerobic respiration, electrons move through the electron transport chain in mitochondria. As electron move, they loose energy, which is used to pump protons from the mitochondrial matrix to the intermembrane space.
AIPMT (Mains)-2011
Respiration in Plants
283709
Glycolate induces opening of stomata in :-
1 Presence of oxygen
2 Low $\mathrm{CO}_{2}$ conc.
3 $\mathrm{High} \mathrm{CO}_{2}$
4 $\mathrm{CO}_{2}$ absent
Explanation:
Exp:B Zelitch (1963) suggested that glycolic acid is formed in the guard cells. This acid is formed under low concentration of $\mathrm{CO}_{2}$. - Glycolate produced gives rise to carbohydrates under this condition osmotically active material is produced and ATP synthesis also takes place. - ATP is formed during glyoxylate-glycolate shuttle. - This ATP helps in the active pumping of water in the guard cells and stomata open. Stomata close when this process is reversed.
