The heterotroph hypothesis suggests that the earliest cells were anaerobic heterotrophs, appearing around 3.5 billion years ago. The timeline also notes the appearance of multicellular animals (565 mya), mammals (210 mya), primates (25 mya), and humans (7 mya), with evolutionary modifications enabling terrestrial life.
Heterotroph Hypothesis - first cells were anaerobic heterotrophs 3.5 bil y.a.- multicellular animals: 565 mil y.a.- modifications lets animals move to land- mammals: 210 mil y.a.- primates: 25 mil y.a- humans: 7 mil y.a.
| Front | Heterotroph Hypothesis |
|---|---|
| Back | - first cells were anaerobic heterotrophs 3.5 bil y.a. - multicellular animals: 565 mil y.a. - modifications lets animals move to land - mammals: 210 mil y.a. - primates: 25 mil y.a - humans: 7 mil y.a. |
Tags: chapter_11
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Modifications land living animals lungs skin limbs internal
Previous card: Sidney fox produced primitive protenoid microphages part life
Up to card list: SAT Biology Flashcards (please read description)