science
Grade-7
Easy
Question
Pyruvate enters the Krebs cycle when oxygen is present. Where does this happen in the eukaryotic cell?
- Lysosome
- Mitochondria
- Chloroplast
- Plastid
Hint:
Krebs cycle occurs in mitochondrial membrane
The correct answer is: Mitochondria
- When oxygen is present, pyruvate is converted to acetyl coenzyme A
- This acetyl coenzyme A then enters the Krebs cycle
- Krebs cycle runs in mitochondrial matrix that contains all the required enzymes, coenzyme and phosphates
Related Questions to study
science
Two molecules of CO2, three molecules of NADH, one molecule of FADH2, and one molecule of GTP are the Krebs cycle's ultimate outputs. State true or false.
Two molecules of CO2, three molecules of NADH, one molecule of FADH2, and one molecule of GTP are the Krebs cycle's ultimate outputs. State true or false.
scienceGrade-7
science
Observe the image and analyze the portion asked in the image that is produced in the Krebs cycle.
Observe the image and analyze the portion asked in the image that is produced in the Krebs cycle.
scienceGrade-7
science
Cellular respiration utilizes glucose and oxygen and produces_________.
Cellular respiration utilizes glucose and oxygen and produces_________.
scienceGrade-7
science
Match the following.
| a. Glycolysis | Acetyl-CoA combines with a four-carbon moleculecalled OAA (oxaloacetate) |
| b. Transformation of pyruvate | 2. Enzymes split a molecule of glucose into two molecules of pyruvate |
| c. Beginning of Citric acid Cycle | Formation of acetyl CoA |
Match the following.
| a. Glycolysis | Acetyl-CoA combines with a four-carbon moleculecalled OAA (oxaloacetate) |
| b. Transformation of pyruvate | 2. Enzymes split a molecule of glucose into two molecules of pyruvate |
| c. Beginning of Citric acid Cycle | Formation of acetyl CoA |
scienceGrade-7
science
Suggest one word for each of the following statements.
a). Identify the stage in which energy from NADH and FADH2, which result from the previous stages of cellular respiration, is used to create ATP.
b). When Acetyl CoA and a four-carbon molecule join, a series of chemical processes known as ___________ takes place.
c). The process by which glucose is broken down to provide energy is known as ____________.
d). In mitochondria, _________ will be transformed into a two-carbon acetyl group.
Suggest one word for each of the following statements.
a). Identify the stage in which energy from NADH and FADH2, which result from the previous stages of cellular respiration, is used to create ATP.
b). When Acetyl CoA and a four-carbon molecule join, a series of chemical processes known as ___________ takes place.
c). The process by which glucose is broken down to provide energy is known as ____________.
d). In mitochondria, _________ will be transformed into a two-carbon acetyl group.
scienceGrade-7
science
Identify the stage of cellular respiration, which takes place on the inner membrane of mitochondria.
Identify the stage of cellular respiration, which takes place on the inner membrane of mitochondria.
scienceGrade-7
science
During the process of _________, the electrons extracted from food move down the electron transport chain in the inner membrane of the mitochondrion.
During the process of _________, the electrons extracted from food move down the electron transport chain in the inner membrane of the mitochondrion.
scienceGrade-7
science
______________ serves the straightforward objective of giving cells the energy they require to function.
______________ serves the straightforward objective of giving cells the energy they require to function.
scienceGrade-7
science
During ________________, a 6-carbon molecule is broken down into two 3-carbon pyruvate molecules.
During ________________, a 6-carbon molecule is broken down into two 3-carbon pyruvate molecules.
scienceGrade-7
science
Choose the odd one out.
Choose the odd one out.
scienceGrade-7
science
The oxidative phosphorylation process results in the production of adenosine triphosphate.
The oxidative phosphorylation process results in the production of adenosine triphosphate.
scienceGrade-7
science
Which of the following steps of cellular respiration occurs after this step (step shown in the image)?
Which of the following steps of cellular respiration occurs after this step (step shown in the image)?
scienceGrade-7
science
Which of the following is the final stage of aerobic cellular respiration?
Which of the following is the final stage of aerobic cellular respiration?
scienceGrade-7
science
___________ are known as the powerhouses of the cell whose membranes are specialized for aerobic respiration.
___________ are known as the powerhouses of the cell whose membranes are specialized for aerobic respiration.
scienceGrade-7
science
______________ requires oxygen and releases carbon dioxide.
______________ requires oxygen and releases carbon dioxide.
scienceGrade-7
