Granum
from class: General Biology I Definition A granum is a stack of thylakoid membranes found within the chloroplasts of plant cells. It plays a crucial role in the light-dependent reactions of photosynthesis by capturing and converting light energy into chemical energy.
congrats on reading the definition of granum . now let's actually learn it.
Predict what's on your test 5 Must Know Facts For Your Next Test Grana are interconnected by lamellae, also known as stroma thylakoids. Each granum can contain anywhere from a few to around 50 thylakoids stacked together. The thylakoid membranes within grana contain chlorophyll, which is essential for absorbing light energy. The arrangement of thylakoids in grana increases the surface area for light absorption. ATP and NADPH, which are produced during the light-dependent reactions in the grana, are used in the Calvin cycle. Review Questions What is the primary function of a granum in photosynthesis? How do grana increase the efficiency of photosynthesis? What molecules are produced during the light-dependent reactions that occur in the grana?
© 2024 Fiveable Inc. All rights reserved. AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.