Lecture 5

Question 1

What are the seven properties of life? (GROSHER)

Answer 1

Growth and development
Reproduction
Order
Sensitivity of response to environment
Homeostasis
Energy processing
Regulation

Question 2

The three different Hypotheses on the Origin of life (red)

Answer 2

Reducing atmosphere
Extraterrestrial
Deep sea vents

Question 3

explain reducing atmosphere hypotheses

Answer 3

An oxygen poor atmosphere in which molecules tend to donate electrons

Question 4

explain the deep sea vents hypotheses

Answer 4

mineral laden seawater spews from cracks in the ocean crust - created a gradient of positive charged protons that served as a battery to fuel the creation of organic molecules and protocells

Question 5

Explain extraterrestrial hypotheses

Answer 5

organic molecules originated in space and life originated from the molecules. It was believed that extraterrestrial life was transported to earth

Question 6

what was the most important metabolic innovation in earth history

Answer 6

oxygenic photosynthesis

Question 7

what is an endosymbiont

Answer 7

an organism that lives inside of another