Photosynthesis: chloroplasts and energy capture
≈ 48 minPhotosynthesis: chloroplasts and energy capture
Photosynthesis transfers light energy into the chemical energy of glucose. In chloroplasts, chlorophyll absorbs parts of visible light. Carbon dioxide and water are rearranged to form glucose, and oxygen is released. Matter is conserved: carbon atoms in glucose come from carbon dioxide, while the energy stored in its bonds comes from light. Photosynthesis does not create matter or energy; it transforms them.
Work it through
A leaf in light takes in carbon dioxide through stomata and receives water through xylem. Chloroplasts use light to build glucose. Some glucose is used immediately in respiration; some is transported or stored as starch.
Mastery target
Track the sources of carbon, water, oxygen and energy in the photosynthesis equation.
Where does the carbon in a glucose molecule made by photosynthesis come from?
Name the key biological term from Photosynthesis: chloroplasts and energy capture: enter the term that best fits the explanation and visual model.
A variegated leaf has green and white areas. Which area is expected to make more starch in bright light?
Which statement corrects a common misunderstanding in Photosynthesis: chloroplasts and energy capture?