Cells

Cells

fundamental units of life

Unicellular

one.

Multicellular

more than one.

Prokaryotic cells

don’t have a nucleus and not divided.

Eukaryotic

have a nucleus and are divided into organelles.

Cell Theory

1. cells are the fundamental unit of life.

2. all known living things are made of one or more cells.

3. all cells arise from preexisting cells.

4. cells contain heredity information (DNA)

5. metabolism occurs within cells.

Nucleus

contains DNA.

ER

proteins and lipids are produced.

Golgi aparatus

post office (delivery).

Mitochondria

they produce ATP that cells use as a source of energy.

Cytoplasm

fluid inside cell.

Plasma Membrane

marks the cell, separating what enters or exits.

Phospholipids

the primary building blocks. (double layer).

Cell Wall

rigid layer that surrounds plant cells.

Cellulose

primary components of cell walls.

Chloroplasts

photosynthesis (green color).

Diffusion

the movement of molecules from high concentration to low concentration.

Hypotonic Solution (low)

a solution that has less sucrose than the cell.

Hypotomic Solution Example

cell will swell, and break.

Isotonic Solution (Equal)

cell and surrounding solution have same concentration of sucrose.

Isotonic Solution Example

the cell will remain unchanged

Hypertonic Solution (High)

solution that has more sucrose than the cell.

Hypertonic Solution Example

the cell will dehydrate, shrink and wrinkle.

organelles

internal compartments of eukaaryotic cells.