Life is Cellular Flashcards
First man to observe living organisms
Anton van Leeuwenhoek
What did Leeuwenhoek call living organisms?
Animalcules
Who coined the term “cell?”
Hooke
Why did Hooke believe that cells were empty?
He had looked only at dead cells
When were most microscopes made?
The 1600’s
What type of scientist was Schleiden?
A botanist
What type of scientist was Schwann?
A biologist
Where were Schleiden and Schwann from?
Germany
What did Schleiden discover?
That all plants are made of cells
What did Schwann discover?
That all animals are made of cells
Who discovered that all cells come from existing cells?
Virchow
What type of scientist was Virchow?
A pathologist
Which three scientist’ established the modern cell theory?
Schleiden, Schwann, and Virchow
What are the ABC’s of the cell theory?
A - All living organisms are made of cells
B - Basic unit of structure within all living things
C - Cells are produced from existing cells
Magnifying glass + magnifying glass = ___.
Compound microscope
Do compound microscopes add or multiply the strength of the lenses?
Multiply
What multiplication can be achieved with compound microscopes?
X1000
How many types of electron microscopes are there?
2
What are the types of electron microscopes?
Transition - Internal structures
Scanning - External structures
What is the downside of using an electron microscope?
The specimen must be dead
What is a photo of an object through a microscope called?
A micrograph
What are three things that all cells have?
- DNA
- Ribosomes
- Cell Membranes
What is the difference between a Prokaryotic and Eukaryotic cell?
Prokaryotic cell does not have nucleus
Prokaryotic vs. Eukaryotic: Which is more complex?
Eukaryotic
Eukaryotic cells come in two forms. What are they?
Plant and Animal cells
