Body → Organ → Tissue → cell → organelle

<figure><img src="image_1.png" /></figure>
Body → Organ → Tissue → cell → organelle

<figure><img src="image_2.png" /></figure>
Body → Organ → Tissue → cell → organelle

<figure><img src="image_3.png" /></figure>
Body → Organ → Tissue → cell → organelle

<figure><img src="image_4.png" /></figure>

<figure><img src="image_5.png" /></figure>

<figure><img src="image_6.png" /></figure>

<figure><img src="image_7.png" /></figure>

<figure><img src="image_8.png" /></figure>

<figure><img src="image_9.png" /></figure>

Organelle

<figure><img src="image_10.png" /></figure>

Cell

<figure><img src="image_11.png" /></figure>

Organ

Tissue

<figure><img src="image_12.png" /></figure>

Living Organism
Cells are the smaller units that definite life = building block of life

<figure><img src="image_13.png" /></figure>
# Cell diversity

<figure><img src="image_14.png" /><figcaption>Fibroblasts</figcaption></figure>

<figure><img src="image_15.png" /><figcaption>Erythrocytes</figcaption></figure>

<figure><img src="image_16.png" /></figure>

<figure><img src="image_17.png" /><figcaption>Epithelial cells</figcaption></figure>

(a) Cells that connect body parts, form linings, or transport gases

<figure><img src="image_18.png" /><figcaption>Skeletal
muscle
cell</figcaption></figure>

<figure><img src="image_19.png" /><figcaption>Smooth
muscle cells</figcaption></figure>

(b) Cells that move organs and body parts

<figure><img src="image_20.png" /><figcaption>Fat cell</figcaption></figure>

<figure><img src="image_21.png" /><figcaption>Macrophage</figcaption></figure>

(c) Cell that stores
nutrients

(d) Cell that fights
disease

<figure><img src="image_22.png" /><figcaption>Nerve cell</figcaption></figure>

(e) Cell that gathers information and controls body functions

<figure><img src="image_23.png" /><figcaption>Sperm</figcaption></figure>

(f) Cell of reproduction

* Cell diversity

* Over 200 different types of human cells

* Types differ in size, shape, and subcellular components; these differences lead to differences in functions
<figure><img src="image_24.png" /></figure>
Cells are the smaller units that definite life = building block of life

<figure><img src="image_25.png" /></figure>