Label each part of the diagram of an ATP molecule below. For Questions &-10, ref
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Question
Label each part of the diagram of an ATP molecule below. For Questions &-10, refer to the Visual Analogy comparing ATP to a charged battery. In the visual analogy, what chemical is represented by the low battery? What arc two ways in which the diagram shows an increase in energy? Describe the concepts shown in the diagram. What arc two ways in which cells use the energy temporarily stored in ATP? Energy is needed to add a third phosphate group to ADP to make ATP. What is a cell's source of this energy?Explanation / Answer
7. From left to right- Adenine - Ribose - Phosphate groups
8. The low battery represents an ADP molecule.
Hydrolysis of ATP to ADP results in loss of phosphate group. hence ADP + Pi is low energy state during ATP (energy carrier) hydrolysis
9. Diagram is showing an increase in energy by- Showing a battery that is charged and glowing. This battery comparable to the ATP molecule now has 3 phosphate groups (energy carrier) and battery emits light.
10. When the battery is low it depicts being uncharged representing the ADP molecule. ADP carries only 2 phosphates and not much energy. When the battery is charged it represents an ATP molecule carrying 3 phosphates. Moreover, the bond between 2nd and 3rd phosphate contains more energy. Hence, ATP is referred energy carrier compared to ADP. Following battery emits light.
11. ATP energy facilitates active transport of molecules across cell membranes and it powers the contraction of heart muscles.
12. Glucose from the diet is the source of energy. Glucose is broken down in the system and energy is used to phosphorylate ADP to ATP. ie. energy gets stored between 2nd and 3rd added phosphate of ATP.
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