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In the current year, Don has a $55,000 loss from a business he owns.His at-risk amount at the end of the year, prior to considering the current-year loss, is $36,000.He will be allowed to deduct the $55,000 loss this year if he is a material participant in the business.
Photosystem II
A complex of proteins and pigments in chloroplasts that participates in the light reactions of photosynthesis by capturing light energy and initiating the process of water splitting and oxygen production.
Stroma
The supportive tissue framework of an organ, gland, or other structure, often referring to the connective, functional tissue of an organ as opposed to its parenchyma.
Rubisco
An enzyme that catalyzes the first major step of carbon fixation in the process of photosynthesis.
Photorespiration
A metabolic pathway in plants that consumes oxygen, releases carbon dioxide, generates no ATP, and decreases photosynthetic output; it occurs when oxygen levels are high and carbon dioxide levels are low.
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