A research group has discovered an organism with cells that contain a previously undescribed organelle. They do some tests on th
e isolated organelle to see if it is involved in any major metabolic reactions. To do this, they incubate these organelles for a period of time and determine changes in the amount of various substances in the suspending solution. The results follow. Based on this analysis, which metabolic process do you conclude is taking place in this organelle?
Select one:
a. pyruvate oxidation
b. citric acid cycle
c. glycolysis
d. electron transport chain/oxidative phosphorylation
e. glycolysis and the citric acid cycle
2. A research group has discovered an organism with cells that contain a previously undescribed organelle. They do some tests on the isolated organelle to see if it is involved in any major metabolic reactions. To do this, they incubate these organelles for a period of time and determine changes in the amount of various substances in the suspending solution. The results follow.
Based on this analysis, which metabolic process do you conclude is taking place in this organelle?
Select one:
a. pyruvate oxidation
b. citric acid cycle
c. glycolysis
d. electron transport chain/oxidative phosphorylation
We know that the Citric acid cycle is also known as the TCA cycle (tricarboxylic acid cycle) or the Krebs cycle. This cycle occurs in Mitochondria in case of eukaryotes. In this cycle acetyl-CoA is oxidized which comes from carbohydrates, proteins and fats and energy is released in the form of ATP.
water is also used in this process. NAD+ gets reduced to NADPH. In this system carbon dioxide is produced as a waste byproduct. ATP is produced as the main product. ATP is also used as a source of energy.
An isometric contraction occurs as the muscle produces tension without changing the angle of a skeletal joint. Isometric contractions involve sarcomere shortening and increasing muscle tension, but do not move a load, as the force produced cannot overcome the resistance provided by the load.