(TBC) Cell bio chapters

Ill add on new chapters after we go over them for the week

What led to the coined term “cell”

Robert Hooke observed compartments in cork under microscope

What 2 factors restricted progress in early cell bio?

resolution & revolving power

compound microscopes

• two lenses w/ improved magnification and resolution

• structures only 1 micrometer in size seen clearly

Cell theory

1. 1. all organisms consist of one or more cells

2. 2. the cell is the basic unit of structure for all organisms

3. 3. all cells arise only from pre-existing cells

The three strands of biological inquiry weave into modern cell biology

cytology, biochemistry, genetics

What does cytology study?

focuses on cellular structure, and observation using optical techniques

What units are commonly used to measure cells?

Micrometers

What units are commonly used to measure organelles?

nanometers

What units are used to measure DNA, RNA, and proteins?

angstrom