alleryWhich part of the chloroplast carries out the dark reaction (Calvin cycle)?
AOuter chloroplast envelope membrane
BThylakoid lumen inside the grana
CStroma surrounding the thylakoids
DInter-membrane space between envelopes
Answer & Solution
Correct answer: C. Stroma surrounding the thylakoids
1. The light reactions happen in the thylakoid membrane.
2. They produce ATP and NADPH that move into the stroma.
3. The Calvin cycle uses these to fix CO2 in the stroma.
4. So the dark reaction site is the stroma.
_Source: Selina Concise Biology Class 10, Ch on Photosynthesis (Mistral OCR'd PDF), section on dark reaction_
Keep practising Unit 8K: Human Organ Systems & Homeostasis
Browse all Unit 8K: Human Organ Systems & Homeostasis questions for AP Biology, or explore more Biology topics.
Related questions
The fluid inside the nucleus is called:Plant cells differ from animal cells in possessing:Endoplasmic reticulum is of how many types?Which organelle has its own DNA?Skin excretesThe renal vein leaving the kidney carries blood that isBlood that enters the kidney through the renal artery isIf a kidney fails, the body removes wastes using a process called