7.9

Question 1

amino acids

Answer 1

small organic molecules that form proteins

Question 2

miller-urey experiment

Answer 2

not accurate depiction of Earth’s conditions, but demonstrated that small organic molecules can form non organic compounds

Question 3

scientists think organic compounds came from

Answer 3

space

Question 4

vesicles

Answer 4

small fluid-filled/air-filled sac or cavity that may be a predecessor to modern day cells

Question 5

production of simple cells (4)

Answer 5

1. synthesis of small organic molecules (amino acids)
2. joining of these molecules into macromolecules (proteins)
3. packaging of these cells into protocells
4. origin of self-replicating molecules (made inheritance possible)

Question 6

protocells

Answer 6

droplets with membranes that maintained internal chemistry different from surroundings

Question 7

necessities for life

Answer 7

ability to reproduced, metabolism (energy processing)

Question 8

endosymbiosis

Answer 8

symbiotic relationship in which an organism lives inside another

Question 9

endosymbiont theory

Answer 9

mitochondria and plastids were originally small bacteria living in larger cells

Question 10

2ndary endosymbiosis

Answer 10

algal cells ingested in food vacuoles of heterotrophic eukaryotes and became endosymbionts

Question 11

serial endosymbiosis

Answer 11

mitochondria evolved first (before chloroplasts)

Question 12

why DNA and not RNA

Answer 12

more stable and can be replicated more accurately