1.2 - Cells & The Cell Theory Flashcards Preview

Science 10 Unit C Biology Section 1 > 1.2 - Cells & The Cell Theory > Flashcards

Flashcards in 1.2 - Cells & The Cell Theory Deck (19)
Loading flashcards...
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

Abiogenesis

2

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

Observations
Conduct any scientific experiments

3

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

Aristotle
Abiogenesis
Spontaneous generation

4

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

Francesco Redi
Controlled scientific experiments

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

5

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

Abiogenesis

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

Needham
Life force
Active principle

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)

Lazzaro Spallanzani

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

Louis Pasteur

9

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

Louis Pasteur
Organism


10

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

Louis Pasteur

11

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

Cell theory

12

1833: ______ discovers the nucleus in orchids

Robert Brown

13

______ coined the term "cells"

Robert Hooke

14

______ discovered animalcules which were actually ______

Anton van Leeuwenhoek
Bacteria

15

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

He later on proves biogenesis is true

Rudolph Virchow

16

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

Matthias Schleiden
Theodor Schwann

17

The Cell Theory part 1:

All organisms are composed of one or more ______

Cells

18

The Cell Theory part 2:

The cell is the smallest ______ unit of ______

Functional
Life

19

The Cell Theory part 3:

All ______are produced from other ______

Cells
Cells