Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
Is the smallest unit that can carry on all of the processes of life.
|
cell
|
|
|
These all represent what theory?
1. all living organisms are composed of one or more cells. 2. Cells are the basic units of structure and function in an organism. 3. Cells come only from the reproduction of existing cells. |
cell theory
|
|
|
One early piece of evidence supporting the cell theory was the observation that ...??
|
cells come from other cells
|
|
|
The scientist who described cells as "many little boxes" was whom?
|
Robert Hooke - 1665
|
|
|
Living and nonliving things are different in that only
|
living things are made of cells
|
|
|
Microscopes were used to study cells beginning in the ____ century
|
17th
|
|
|
The advantage of van Leeuwenhoek's ( 1673)microscopes was that
|
-the lenses were ground very precisely
-10X magnify than Hooke's -found animalcules or protists. |
|
|
What was a major event in the history of cell biology?
|
cloning animals, growing bone tissue for transplant, and discovery of cell parts.
|
|
|
A light microscope uses optical lenses to magnify objects by
|
bending light rays
|
|
|
Why did it take 150 years for the cell theory to be developed after microscopes were invented?
|
because microscope technology had not improved until then and now accurate observations can be made.
|
|
|
Why did Hooke's cork cells appear to be empty?
|
The cork cells that Hooke observed were the remains of dead plant cells. The material from the inside of the cells had been lost or destroyed.
|
|
|
What is one thing you already know if you were to find a new cell?
|
That it is made of cells and that cells reproduce to make more cells
|
|
|
An ___________________ is a biocatalyst.
|
Enzyme
|
|
|
What does PCR stand for and what is it?
|
Polymerized chain reaction-
process where small genetic info is made and then make multiple copies of it. |
|
|
Chemistry that happens outside the organism
|
inorganic
|
|
|
chemistry that happens inside the organism
|
organic
|
|
|
Who discovered all animals are made of cells?
|
Theodor Schwann in 1839
|
|
|
Who noted that only cells come from previously existing cells?
|
Rudolf Virchow in 1821-1902
|
