This is an absorption spectrum of plant leaf extract. Why does a plant contain an accessory pigment like phycoerythrin in addition to chlorophyll? In other words, what is the benefit to the plant?

The following image is a schematic of the metabolic processes occurring in a plant contained in a closed container.   A=Light Dependent reactions B=Glycolysis C=Light Independent Reactions D=Kreb's cycle E=electron transport chain   2a) Use the figure above to explain the conditions in which the oxygen concentration remains constant in the container. b) 2-carboxyarabinitol-1,5-bisphosphate (CABP) is an inhibitor of the enzyme rubisco. Which pathway would this affect most?

Photosynthetic response curve to light for sun (solid line, N = 14) and shade leaves (dashed line, N = 21) of S.  Why in this graph do we see shaded leaves have lower values compared to light leaves as PAR is increasing?

Describe cation exchange. How would decomposition of mulch and humus affect cation exchange? Why is acid rain so damaging?

would you expect an absorption spectrum graph of chlorophyll (green plant pigment involved in photosynthesis) to be the same or not of that for the red food coloring? why?

Single celled organisms that grow in irregular masses and include molds mildews and yeasts? How does an abundance of tryptophan inhibit the production of more tryptophan?

Why CaCl2 is used in the plants?

University of Seville Researchers from the Department of Pharmacology at the University of Seville have recently published a study in which they state that diets supplemented with aqueous extract of Annona muricata L. leaves can prevent the symptoms associated with fibromyalgia, so improving the lives of these patients. Leaves of the species Annona muricata L. come from a tree of between 4 and 6 metres in height, from the botanical family Annonacese. They are simple leaves, oblong and egg like or oblong and elliptical in shape and between 5 and 15 cm in length. This species is native to the tropical areas of the Americas and is especially abundant in the Amazon region. It is usually cultivated for its medicinal use. The leaves have different ethnomedical uses according to their country of origin. The most important uses in traditional medicine, scientifically validated in pre-clinical tests, are for inflammation, pain, infections, diabetes and cancer. "The consumption of extract of…

A substance obtained from Willow bark in 1973 was found to reduce fever resulting from malaria, and about a century later to relieve the pain of rheunmatism. What is the ingredient in Willow bark extract? Discuss the proposed mechanism of its action.

4. (4 pts) a) Describe one way in which Rubisco could be improved to optimize photosynthetic activity. b) Why has overexpressing Rubisco not been effective?