1.2 - Cells & The Cell Theory

Question 1

______ is when living things arise from non-living matter

Ex: eels came from the slime in river mud

Ex: maggots cam from rotting material

Answer 1

Abiogenesis

Question 2

Aristotle created his theories on the origin of life based on his many ______, but didn’t ______ to test his ideas

Answer 2

Observations

Conduct any scientific experiments

Question 3

______ was a GREEK philosopher whose theory of ______ and ______ was accepted for over 2000 years

Answer 3

Aristotle
Abiogenesis
Spontaneous generation

Question 4

______ was an ITALIAN physician who used ______ to counter the theory of spontaneous generation / abiogenesis (he was convinced afterwards that abiogenesis was incorrect)

Answer 4

Francesco Redi
Controlled scientific experiments

Jar 1: meat left uncovered -> maggots appeared
Jar 2: meat covered in cloth -> no maggots

Question 5

Although ______ was disapproved, scientists still did not know how new forms of life were produced

Answer 5

Abiogenesis

Question 6

In 1745, ______ tried to prove that abiogenesis was wrong (boiled chicken broth and sealed it in a flask, microorganisms still appeared)

He then suggested that a ______ or ______ resulted in spontaneous generation / abiogenesis

Answer 6

Needham
Life force
Active principle

Question 7

______ believed microorganisms in the AIR resulted in new growth

(Boiled chicken broth in a flask, drew the air off, sealed the flask, no further growth appeared)

Answer 7

Lazzaro Spallanzani

Question 8

______ was a FRENCH scientist who finally settled the debate.

Experiment: flask with an S curve tube that prevented microorganisms in the air to contaminate the broth

Answer 8

Louis Pasteur

Question 9

______ investigated fermentation (explains grape juice to wine). Hypothesized that the active principle in the air was an ______

Answer 9

Louis Pasteur

Organism

Question 10

______ proved the theory that spontaneous generation and abiogenesis was wrong and opened the doors to microbiology, immunology, and more

Answer 10

Louis Pasteur

Question 11

The ______ explains and defines the boundary between the living and non-living

Answer 11

Cell theory

Question 12

1833: ______ discovers the nucleus in orchids

Answer 12

Robert Brown

Question 13

______ coined the term “cells”

Answer 13

Robert Hooke

Question 14

______ discovered animalcules which were actually ______

Answer 14

Anton van Leeuwenhoek

Bacteria

Question 15

______ suggested the theory of biogenesis (living organisms can only arise from other living organisms) in 1858

He later on proves biogenesis is true

Answer 15

Rudolph Virchow

Question 16

______ and ______ were GERMAN scientists who contributed to the cell theory by stating that all organisms are made of cells

Answer 16

Matthias Schleiden

Theodor Schwann

Question 17

The Cell Theory part 1:

All organisms are composed of one or more ______

Answer 17

Cells

Question 18

The Cell Theory part 2:

The cell is the smallest ______ unit of ______

Answer 18

Functional

Life

Question 19

The Cell Theory part 3:

All ______are produced from other ______

Answer 19

Cells

Cells