1 / 9

Section 8-1

Section 8-1. Energy and Life. Autotrophs vs. Heterotrophs. Autotrophs – organisms, such as plants that make their own food. Heterotrophs – organisms, such as animals, that must consume food in order to obtain energy. Adenosine Triphosphate (ATP).

pcarr
Download Presentation

Section 8-1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Section 8-1 Energy and Life

  2. Autotrophs vs. Heterotrophs • Autotrophs – organisms, such as plants that make their own food. • Heterotrophs – organisms, such as animals, that must consume food in order to obtain energy.

  3. Adenosine Triphosphate (ATP) • Adenosine Triphosphate (ATP) – chemical compound that cells use to store and release energy • Consists of adenine, a 5-carbon sugar called ribose, and three phosphate groups.

  4. ATP (cont) • Energy is released by breaking the chemical bond between the second and third phosphates.

  5. 9.2 Photosynthesis: Trapping the Sun’s Energy • Process plants use to trap the sun’s energy and build glucose that store energy • 6CO2 + 6H2O → C6H12O6 + 6O2 carbon + water glucose + oxygen dioxide (sugar)

  6. Photosynthesis occurs in the chloroplasts. • Chloroplasts contain the pigment chlorophyll. Chlorophyll molecules trap the sunlight so photosynthesis can occur.

  7. 9.3 Getting Energy to Make ATP • Cellular Respiration • Process by which mitochondria break down food to produce ATP. • Converts glucose to carbon dioxide and water. • C6H12O6 + O2→CO2 + H2O

  8. Aerobic vs. Anaerobic Respiration Anaerobic – does not require oxygen Aerobic – does require oxygen

  9. Photosynthesis and cellular respiration are opposite processes. • The reactants of one process are the products of the other

More Related