BIO1

Question 1

Aristotle

Answer 1

Spontaneous generation (abiogenesis and heterogenesis) is formation of life forms from non living matter

Question 2

Five characteristics of living things

Answer 2

respond to stimuli
grow
produce waste
require energy
reproduce

Question 3

Francesco Redi

Answer 3

1668
challenged and tested theory of SG through jar experiment.
open-maggots produced
covered-no maggots produced

Question 4

Microscope

Answer 4

Discovery of single-celled microorganisms, renewed debate over SG.

Many people believed than an “active principal” or “life force” in air created microorganisms.

Question 5

Louis Pasteur

Answer 5

Doesn’t believe in SG!
Life doesn’t arise spontaneously!
Contamination only occurs upon exposure to outside environment.

Question 6

Biogenesis

Answer 6

living things originate from other living things.

Question 7

Zacharias Janssen

Answer 7

inventor of compound microscope

Question 8

Robert Hooke

Answer 8

Saw ‘cells’ in a cork using a 3-lens compound microscope.
first to use the term ‘cell’!

Question 9

Antoni van Leeuwenhoek

Answer 9

first to see living cells in motion (animalcule) using a single lens microscope (250x)

Question 10

Robert BROWN

Answer 10

suggested the granular spot seen in cells (nucleus) is important for cell function

Question 11

Matthias Schleiden

Answer 11

noted all plant tissues are made of cells

Question 12

Theodor Schwann

Answer 12

believed there must be similarities between plant and animal cells (AC)
-discovered nuclei in AC
-All observed animal tissues composed of cells.

Question 13

CELL THEORY COMPONENTS

Answer 13

1) all organisms are composed of one or more cells
2) the cell is the smallest unit of life (schleiden and schwann)
3) all cells are produced from other cells (virchow.