Photosynthesis Flashcards
Where does photosynthesis occur?
In the chloroplasts
What are the chloroplast “stacks”?
Thylakoids
What is the chloroplast thylakoid membrane space, where ETC occurs?
Lumen
What is the chloroplast “fluid”?
Stroma
What is the chloroplast “light-capturing pigment”?
Chlorophyll
What are the two parts of chlorophyll?
Porphyrin ring and long hydrocarbon tail
What does the hydrophobic tail of a chlorophyll do?
Anchors the molecule into the thylakoid membrane
What does the porphyrin ring of a chlorophyll do?
Contains electrons that absorb light energy and bring the proces of photosynthesis
What are the two types of chlorophyll?
Chlorophyll A and chlorophyll B
What is the difference between chlorophyll A and B?
A has a methyl group (-CH3) at position -R in the porphyrin ring, whereas B contains an aldehyde group (-CHO) in that position
Why does the small difference between chlorophyll A and B matter?
It alters which light waves the chlorophyll captures
Label the parts of a chloroplast organelle
Starch grain, thylakoid, outer membrane, space between membrane (lumen), inner membrane, grana, stroma, thylakoid space, chlorophyll molecules embedded in the thylakoid membrane, lamella
Where on the plant does the primary site of photosynthesis occur?
On the leaves
Which part of the leaf, bottom or top, contains stoma?
Bottom
Label the parts of a leaf
Upper epidermis, palisade mesophyll, spongy mesophyll, lower epidermis, stoma, vein, guard cells, bundle sheath
