Question

remaining time: 04 minutes, 53 seconds. question completion status: question 2 in this picture representing the process of photosynthesis, a and b happen, respectively in the following parts of the chloroplast: a cristae and stroma. b. thylakoids and stroma. c. stroma and thylakoids. d. thylakoids and matrix.

Explanation:

1. For Question 1: Photosynthesis consists of light - dependent reactions (light reactions) and light - independent reactions (Calvin cycle). The Calvin cycle uses the products of light reactions to make sugar. The citric acid (Krebs') cycle is part of cellular respiration, not photosynthesis.
2. For Question 2: In photosynthesis, the light reactions occur in the thylakoid membranes of the chloroplast, and the Calvin cycle (light - independent reactions) occurs in the stroma of the chloroplast. Cristae are part of mitochondria, and the matrix is also a mitochondrial component.

Answer:

Question 1: B. light reactions and Calvin cycle.
Question 2: B. thylakoids and stroma.