Intro to Bio

Question 1

2 unifying themes in biology

Answer 1

cell theory

evolution

Question 2

cell theory

Answer 2

all living things are made from cells

all cells come from pre-existing cells

Question 3

Robert Hook

Answer 3

1665 (30x mag. glass) 1st id’ed cells in Cork

Question 4

Anton Von Leeuwenhoek

Answer 4

1668 (created 300x microscope)

id’ed more things made from cells; semen

Question 5

Virchow

Answer 5

1860 stated all living things are made from cells

Question 6

Louis Pasteur

Answer 6

1860 refuted spontaneous generation theory with an experiment

Question 7

Pasteur experiment

Answer 7

procedure: sterilized H2O, incubated at rm. temp
results: microbes present in H2O exposed to air column (previously existing cells)

Question 8

evolution

Answer 8

a genetic change in a population over time

Question 9

Charles Darwin

Answer 9

1865 published “Origin of Species due to Natural Selection”

Question 10

natural selection

Answer 10

process in which a subset of a population possesses a genetic trait that increases reproductive success

Question 11

2 themes main point

Answer 11

all living things evolved from a common ancestor