Explanation:
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When electrons do not return to the photosystems, it is because of a process known as oxygenic photophosphorylation, a process that is key to photosynthesis.
Photosynthesis is the process by which plants get their energy. This process involves many steps taken in order to turn energy from light, into sugar and molecular energy known as ATP, needed for plants to survive. This process uses a variety of important and complex steps, among which is included oxygenic photophosphorylation.
Oxygenic photophosphorylation is one of the key processes to photosynthesis. It involves the use of photosystems <u>one </u>and <u>three</u>, located in the thylakoid membrane of plant cells, in order to produce NADPH and ATP. These systems enter a state of photoactivation, releasing an electron to be carried by the NADPH molecule towards the Calvin cycle where the electron can be placed onto a carbon atom, for long-term storage, often as a carbohydrate.
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Answer:
39.82 %
Explanation:
Proteins and carbohydrates provide 4 calories per gram. On the other hand, fats provide 9 calories.
We can first calculate the calories of protein + carbohydrates:
(30g + 4g) x 4 = 136 calories
And we must calculate the calories provided by fat:
10g x 9 = 90 calories
Now to get the percentage we must see how many calories the dessert has in total:
136 + 90 = 226 cal
This represents 100% of calories. And now we need to find out how much 90 calories are from the total.
226 cal -----> 100%
90 cal ------> X
(90 x 100) / 226 = 39.82 %