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Answer:
A. proton-driven rotation of the Fo subunit, which causes F1 to change conformation due to that rotation, allowing ADP to be phosphorylated to ATP
Explanation:
To answer the question we need to understand the following.
What is ATP synthase?
- ATP synthase is an enzyme that is found in the electron transport chain which is the final phase of cellular respiration.
What is the Role of ATP synthase?
- The role of ATP synthase is to synthesize ATP which is the main storage energy molecule in the cells.
How does ATP synthase allow production of ATP?
- Production of ATP by ATP synthase complex is through oxidative level phosphorylation.
- The flow of protons down the concentration gradient into the mitochondrion matrix through ATP synthase. This drives the rotation of ATP synthase thus catalyzing the phosphorylation of ADP to ATP.
Answer:
1.) Total distance = 70 m
2.) Total displacement = +30m
Explanation:
Distance is a scaler quantity. That is, we will be concerned about its magnitude only and not direction.
Total distance = 10 + 20 + 40 = 70 m
While displacement is a vector quantity. We will consider both the magnitude and its direction.
Forward direction will be positive while backward direction will be negative
Total displacement = +10 - 20 + 40
Total displacement = +30 m
Answer:
Choice a.
, assuming that the skating rink is level.
Explanation:
<h3>Net force in the horizontal direction</h3>
There are two horizontal forces acting on the boy:
- The pull of his friend, and
- Frictions.
The boy should be moving in the direction of the pull of his friend. The frictions on this boy should oppose that motion. Therefore, the frictions on the boy would be in the opposite direction of the pull of his friend.
The net force in the horizontal direction should then be the difference between the pull of the friend, and the friction on this boy.
.
<h3>Net force in the vertical direction</h3>
The net force on this boy should be zero in the vertical direction. Consider Newton's Second Law of motion. The net force on an object is proportional to its acceleration. In this question, the net force on this boy in the vertical direction should be proportional to the vertical acceleration of this boy.
However, because (by assumption) the ice rink is level, the boy has no motion in the vertical direction. His vertical acceleration will be zero. As a result, the net force on him should also be zero in the vertical direction.
<h3>Net force</h3>
Therefore, the (combined) net force on this boy would be:
.
Answer:
Explanation:
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