Origin of Life + Microscopes

Question 1

Hypothesized sources of amino acids

Answer 1

Abiotic synthesis
early atmosphere
volcanoes/sea vents

Question 2

4 Hypothesized steps to forming the first simple cell

Answer 2

1. Abiotic synthesis of small organic molecules (nucleic acids/nitrogen bases)
2. Organic molecules forming macro molecules
3. Grouping of macro molecules into protocells
4. Self replicating molecules

Question 3

what are protocells and how are they made

Answer 3

Cells with simple membranes who can metabolize and have an internal chemical composition different than their surroundings

Question 4

Origin Events

Answer 4

1. Earth is made from condensed rock and dust (4.6 bya)
2. First atmosphere formed (reducing)
3. First prokaryotes found in stromatolites
4. Cyanobacteria produces oxygen and creates an oxidizing atmo
5. Large multicellular organisms

Question 5

Spontaneous origin

Answer 5

life originating from non-life

Debunked

Question 6

Abiogenesis

Answer 6

Life originating from abiotic molecules

Question 7

Phylogeny Tree

Answer 7

Family tree, all organisms share Last Universal Shared Ancestor

Question 8

Adaptive radiation

Answer 8

rapid increase in evolution as a result of a natural disaster, evolve to fill niches and adapt body modifications (wings, fins etc)

Question 9

Endosymbiont theory

Answer 9

eukaryotes evolving from prokaryotes

Question 10

Microscope Magnifications

Answer 10

Low: 10x
Med: 40x
High: 100x
Oil: 1000x

Question 11

Field of view

Answer 11

Amount of slide visible

As magnification goes up, field of view shrinks

Question 12

Depth of Field

Answer 12

number of planes that can be focused on

As magnification increases depth of field decreases

Question 13

Resolving Power

Answer 13

ability to see detail

As magnification increases so does resolving power