intro to the cell

Intro to the Cell

1. History of the Cell

1. Robert Hooke - first to name cells

2. Van Leeuwenhoek - first to id cells as living structures

3. Schleiden & Schwann - developed the Cell Theory

i. all organisms are made of cells

ii. the cell is the simplest collection of matter than can be alive

ili. cell structure is correlated to cellular function

iv. all cells are related by their descent from earlier cells

2. Cell Types and Characteristics

Prokaryotic doesn’t have organelles

Eukaryotic has organelles

b. Draw and label common characteristics below:

1. cell membrane: a - semipermable membrane. b- phospholipid bilayer

2. cytoplasm: thick liquid (gel - Like)

3. Genetic material: DNA

4. Ribosomes: protein production.

5. Cytoskeleton: provided structure and support.
   sor protein

3. Eukaryotic Organelles

a. Nucleus

i. stores DNA, control center of cell

ii. surrounded by 2 membranes interrupted by pores

b. Endoplasmic Reticulum (ER)

i. continuous with the nuclear envelope

ii. two distinct regions

1. smooth ER (SER): synthesizes lipids, metabolized carbs, detoxifies drugs &

poisons

2. rough ER (RER): manfactures proteins to be exported from the cell

c. Golgi Apparatus

flattened membranous sacs, cis and trans sides

ii. modifies products of the ER

ili. sorts & packages materials using transport vesicles.