The chloroplast contains approximately 75% of the proteins found in photosynthetically active leaf cells.The breakdown of these proteins to free amino acids is an important source of ______ that is exported from the cell during programmed senescence.

Question

Quizplus · Accepted Answer

The breakdown of proteins in the chloroplast is a source of nitrogen, which can be exported from the cell during senescence. Carbohydrates are not typically broken down from proteins, and magnesium is a mineral that is not typically found in proteins. Therefore, choice A is the best answer.

The Chloroplast Contains Approximately 75% of the Proteins Found in Photosynthetically