brodidit for students
ہوم / مشق / ایم ڈی کیٹ / حیاتیات / تنفس اور ضیائی تالیف
تنفس اور ضیائی تالیف
8 سوالات: ایم ڈی کیٹ حیاتیات، جوابات اور وضاحت کے ساتھ۔
-
Where does glycolysis take place in a cell?
- 1 Mitochondrial matrix
- 2 Cytoplasm
- 3 Nucleus
- 4 Inner mitochondrial membrane
جواب دیکھیں
درست جواب: Cytoplasm
Glycolysis happens in the cytoplasm and does not need oxygen. It splits glucose into two molecules of pyruvate.
-
What is the net gain of ATP from glycolysis of one glucose molecule?
- 1 2
- 2 4
- 3 36
- 4 38
جواب دیکھیں
درست جواب: 2
Glycolysis uses 2 ATP and makes 4, so the net gain is 2 ATP.
-
What is the final electron acceptor in aerobic respiration?
- 1 Carbon dioxide
- 2 NAD+
- 3 Oxygen
- 4 Water
جواب دیکھیں
درست جواب: Oxygen
Oxygen accepts the electrons at the end of the electron transport chain and is reduced to water.
-
The Krebs cycle takes place in the:
- 1 Cytoplasm
- 2 Mitochondrial matrix
- 3 Outer mitochondrial membrane
- 4 Golgi apparatus
جواب دیکھیں
درست جواب: Mitochondrial matrix
The enzymes of the Krebs cycle are in the fluid matrix inside the mitochondrion.
-
Alcoholic fermentation in yeast produces:
- 1 Lactic acid only
- 2 Ethanol and carbon dioxide
- 3 Acetic acid and water
- 4 Ethanol and oxygen
جواب دیکھیں
درست جواب: Ethanol and carbon dioxide
Pyruvate is converted to ethanal, and then to ethanol. Carbon dioxide is released in the first step.
-
The oxygen released during photosynthesis comes from:
- 1 Carbon dioxide
- 2 Glucose
- 3 Water
- 4 Chlorophyll
جواب دیکھیں
درست جواب: Water
Water is split by light in photolysis. This was shown by experiments with heavy oxygen.
-
Which products of the light reactions are used to run the Calvin cycle?
- 1 ATP and NADPH
- 2 Glucose and oxygen
- 3 ADP and NADP+
- 4 Pyruvate and NADH
جواب دیکھیں
درست جواب: ATP and NADPH
The light reactions make ATP and NADPH, which supply the energy and reducing power for fixing carbon dioxide.
-
How many carbon atoms does a molecule of pyruvate have?
- 1 2
- 2 3
- 3 4
- 4 6
جواب دیکھیں
درست جواب: 3
Glucose has six carbons, and glycolysis splits it into two three-carbon molecules of pyruvate.