Cell Structures and Functions

Chapter 3 pp62-72

Learning Target: Identify the parts of a cell and know the function of each structure (knowledge)

Tip for success:

Pay attention and take good notes.

Cell MembraneAnatomy Soft and flexible Self repairing Phospholipid bilayer Protein channels MarkersPhysiology Selectively permeable Allows cells to interact and adhere to each other

Cytosol

Anatomy Gel-like materialPhysiology• Suspends organelles

Nucleus

Anatomy Spherical Surrounded by membrane with pores Contains nucleolus (rRNA) and chromatin (DNA and protein)Physiology stores genetic information that determines the

function of the cell site of ribosome formation

Organelles

Anatomy Specialized structuresPhysiology Perform various functions

Learning Target: Explain how variations in cell shape and structure allow for variations in cell function. (reasoning)

Size

measured inmicrometers

1/1,000,000mor 1/10,000 cm

most human cellsare 10-30 µm

egg cell 35

µmsperm 3

µm

Why the difference in size?

Shape

Elongated

Biconcave

Irregular

Tendrils

Flat

Function

Contract

Carry oxygen

Engulf

Send messages

Protection

What shape are these cells?

Nerve cell

white blood cell

Red Blood cells

layered epithelial cells

skeletal muscle cells

Tendrils IrregularBiconcave

Flat Elongated

• Complete Homework worksheet• Work on Outline – Chapter 3 pp 62-72 due

Friday.

To Do

• Click on your anatomy and physiology icon• Open 2.09 Cell structures and functions

presentation• Open in “Power Point"• Select Play• Make an effort to determine the correct answer

before revealing it.• Label the diagram and then match the function

on the back.