Chapter 8: Photosynthesis Overview Flashcards Preview

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Flashcards in Chapter 8: Photosynthesis Overview Deck (19):
1

the energy source for nearly all of Earth's ecosystems

Photosynthesis

2

producers that create energy from inorganic materials and light or chemical energy

autotrophs

3

obtain organic molecules by consuming autotrophs or other heterotrophs

heterotrophs

4

autotrophs that use light as the energy source to make organic molecules by photosynthesis

photoautotrophs

5

large vesicles that perform specialized functions unique to plants

central vacuoles

6

-surrounds the central vacuole
-contains transport proteins that move substances into and out of the central vacuole

tonoplast

7

cell wall that is relatively soft and flexible

primary cell wall

8

cell wall that consists of additional layers of cellulose fibers and branched carbohydrates laid down between the primary wall and the plasma membrane

secondary cell wall

9

the walls of adjacent cells are held together by a layer of polysaccharides

middle lamella

10

plasma membrane-lines channels that connect the cytosols of adjacent cells

plasmodesmata

11

yellow green plastids-the sites of photosynthesis in plant cells

chloroplasts

12

colorless plastids that store starch, a product of photosynthesis

amyloplasts

13

contain red and yellow pigments and are responsible for the colors of ripening fruits or autumn leaves

chromoplasts

14

-chloroplasts surrounded by these
-completely enclose an inner compartment, the stroma

inner and outer boundary membrane

15

within the stroma is a third membrane system consisting of flattened, closed sacs

thylakoids

16

thylakoids are stacked

grana

17

green pigment that absorbs light energy and converts it to chemical energy in photosynthesis

chlorophyll

18

-energy of sunlight is absorbed and converted into chemical energy
-NADPH carries electrons that are pushed to high energy levels by absorbed light

light-dependent reactions

19

-electrons in NADPH are used as a source of energy to convert inorganic CO2 to an organic form

light-dependent reactions (Calvin Cycle)