bio deck 2 unit 1 Flashcards
1
Q
Robert hooke
A
1665 - observed a cork under a microscope noted compartments he called “cells”
2
Q
Anthony Van Leeuwenhoek
A
1667 - designed simple microscopes, marked discovery of bacteria
3
Q
mattias scheiden
A
1838 - contributor to cell theory, observed plant cells that contained a nucleus
4
Q
Theodor schwann
A
1839 - contributor to cell theory, observed animal cells that contained a nucleus
5
Q
Rudolf Virchow
A
1855 - concluded that all cells arise from pre existing cells
6
Q
statements of cell theory
A
- cell is the basic unit of life
- all living things are made up of one or more cells
- all cells come from pre existing cells
7
Q
cell features
A
- all cells contain DNA.
- contain ribosomes within the cytoplasm
- all cells have cytoplasm
-all cells have cell membrane - they have cytoskeleton, helps movement within the cell.
8
Q
why is cell size so small
A
as the cell gets larger in volume, the surface area to volume ratio decreases.
9
Q
A
