Biology 1001A Lecture Notes - Lecture 3: Abiogenesis, Nuclear Membrane, Archaea

44 views4 pages

Document Summary

Viruses have to rely on other forms of life. But humans also rely heavily on organisms to survive. Seven characteristics of life: display order, harness and utilize energy, reproduce, respond to stimuli, exhibit homeostasis, growth and development, evolve. You can"t simply say that something is not life because it doesn"t have dna. The earth has been around for 4. 6 billion years. We have geological evidence of life dating to 3. 5 billion years ago called stromatolites. These are believed to have been produced by microbial activity. Cyanobacteria are fairly complex organism capable of photosynthesis like modern plants. It is believe that some form of life predated the cyanobacteria, therefore the start of life might have been around 4. 0 billion years ago. It seems that relative to the age of earth, life developed quite fast. All cellular life ts on the tree of life.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents