Chapter 10 - Chapter 10 Photosynthesis Photoautotrophs Use...

Info iconThis preview shows pages 1–19. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 10 Photosynthesis
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Photoautotrophs Use energy of sunlight to make organic 2 Figure 10.1
Background image of page 2
Photosynthesis Occurs in plants, algae, certain other protists, These organisms use light energy to drive the synthesis of organic molecules from carbon dioxide and (in most cases) water. They feed not only themselves, but the entire living world. (a) On land, plants are the predominant producers of food. In aquatic environments, photosynthetic organisms include (b) multicellular algae, such as this kelp; (c) some unicellular protists, such as Euglena; (d) the prokaryotes called cyanobacteria; and (e) other photosynthetic prokaryotes, such as these purple sulfur bacteria, which produce sulfur (spherical globules) (c, d, e: LMs). (a) Plants (b) Multicellular algae (c) Unicellular protist 10 μ m 40 μ m (d) Cyanobacteria 1.5 μ m (e) Pruple sulfur bacteria Figure 10.2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Concept 10.1: Photosynthesis converts light energy to chemical energy of food
Background image of page 4
Chloroplasts: Sites of Photosynthesis in Plants Leaves of plants Major sites of photosynthesis Vein Leaf cross section Figure 10.3 Mesophyll CO 2 O 2 Stomata
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chloroplasts Organelles in which photosynthesis occurs Contain thylakoids and grana Chloroplast Mesophyll 5 µm Outer membrane Intermembrane space Inner membrane Thylakoid space Thylakoid Granum Stroma 1 µm
Background image of page 6
Tracking Atoms Through Photosynthesis: Scientific Inquiry Photosynthesis is summarized as: 6 CO 2 + 12 H 2 O + Light energy C 6 H 12 O 6 + 6 O 2 + 6 H 2 O
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The Splitting of Water Chloroplasts split water into Hydrogen & oxygen, incorporating electrons of hydrogen into sugar molecules 6 CO 2 12 H 2 O Reactants: Products: C 6 H 12 O 6 6 H 2 O 6 O 2 Figure 10.4
Background image of page 8
Photosynthesis as a Redox Process Water is oxidized, CO 2 is reduced
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Stages of Photosynthesis: A Preview Photosynthesis consists of 2 processes 1. The light reactions 2. The Calvin cycle
Background image of page 10
Light reactions Occur in the grana Split water, release O 2 , produce ATP, & form NADPH
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Calvin cycle Occurs in the stroma Forms sugar from CO 2 , using ATP for energy & NADPH for reducing power
Background image of page 12
Overview of photosynthesis H 2 O CO 2 Light LIGHT REACTIONS CALVIN CYCLE Chloroplast [CH 2 O] (sugar) NADPH NADP + ADP + P O 2 Figure 10.5 ATP
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Concept 10.2: Light reactions convert solar energy to chemical energy of ATP & NADPH
Background image of page 14
Electromagnetic spectrum Entire range of electromagnetic energy, or radiation Gamma rays X-rays UV Infrared Micro- waves Radio waves 10–5 nm 10–3 nm 1 nm 103 nm 106 nm 1 m 106 nm 103 m 380 450 500 550 600 650 700 750 nm Visible light Shorter wavelength Higher energy Longer wavelength Lower energy Figure 10.6
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Photosynthetic Pigments: The Light Receptors Pigments Substances that absorb visible light
Background image of page 16
Reflect light, which include colors we see Light Reflected Light Chloroplast Absorbed light Granum Transmitted light Figure 10.7
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Spectrophotometer
Background image of page 18
Image of page 19
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/18/2011 for the course BIO 103 taught by Professor Sanders during the Spring '10 term at Northwestern IA.

Page1 / 46

Chapter 10 - Chapter 10 Photosynthesis Photoautotrophs Use...

This preview shows document pages 1 - 19. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online