B1- Cell Biology

B1- Cell Biology

Prokaryotic & Eukaryotic Cells:

Eukaryotic Cells (Eu- You)

Animal+Plant+Fungi cells= Eukaryotic Cells

They are multicellular organisms

They have a true nucleus

Prokaryotic Cells

Bacterial cells= Prokaryotic Cells 

They are unicellular organisms

They do not have a tru nucleus; have a chromosome (single circular strand of DNA) that floats freely in the cytoplasm and Plasmids (DNA)

Cell Structure+ Subcellular structures

Animal:

1) Nucleus- contains genetic information+ controls activity

2) Cytoplasm- Chemical reaction occurs

3) Cell Membrane- Controls what goes in and out

4) Ribosome- Where proteins are made

5) Mitochondria- Most reactions for aerobic respiration takes place. Respiration transfers energy that a cell needs to work.

Plant:

1) Nucleus- Contains genetic information

2) Cytoplasm- Chemical reactions occur

3) Cell Membrane- Controls what goes in and out

4) Ribosome- Where proteins are made

5) Mitochondria- Where reactions for respiration occurs. Respiration transfers energy that a cell needs to work.

6. Cell wall- Made of cellulose and supports cell

7. Chloroplast- Contain chlorophyll= absorb sunlight= photosynthesis

8 Permanent Vacuole- Contains cell sap- weak solution of sugar+ salt

Bacteria- Prokaryote

1) Cell Membrane

2) Cytoplasm

3. Cell Wall

4* Nucleoid+ Plasmids- Bacteria don't have a true form of DNA.

5* Flagella- Movement

Microscopy

There are 2 types of microscopes: Light and Electron

Light Microscope:

Use- Light and lense

Explanation- They magnify a specimen and let us see individual cells and large subcelluar structures (nuclei)

Electron Microscope:

Use- Electrons instead of light

Explanation- They have much higher resolution and magnification. They also let us see smaller things in…