today, we begin the cells unit… k w what do you already … 4 cell structure and... · today, we...
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Happy Thursday – 3/13/2014 D3: Please have your ID ON
Today, we begin the CELLS unit…
K – W – L :
What do you already KNOW about cells? (dig around in your brain for those memories!)
What do you WANT to know about cells? (really, what interests YOU?!)
We’ll fill in the “L” (learned) later!
Chapter 4: Cell Structure and Function
AWWWWwww,
CELL!
4.1: History of Cell Biology
So, what’s a cell?
Cell:
Who? When? What?
Hooke
Who? When? What?
Hooke 1665 Light microscope
Cork drawings “cells”
Leeuwenhoek
Who? When? What?
Hooke 1665 Light microscope
Cork drawings “cells”
Lueewenhoek 1673 1st: living cells
MADE microscopes
Spirogyra!!
Schleiden
Who? When? What?
Hooke 1665 Light microscope
Cork drawings “cells”
Lueewenhoek 1673 1st: living cells
MADE microscopes
Spirogyra!!
Schleiden 1838 ALL PLANTS made of cells
Schwann
Who? When? What?
Hooke 1665 Light microscope
Cork drawings “cells”
Lueewenhoek 1673 1st: living cells
MADE microscopes
Spirogyra!!
Schleiden 1838 ALL PLANTS made of cells
Schwann 1839 ALL ANIMALS made of cells
Virchow
Who? When? What?
Hooke 1665 Light microscope
Cork drawings “cells”
Lueewenhoek 1673 1st: living cells
MADE microscopes
Spirogyra!!
Schleiden 1838 ALL PLANTS made of cells
Schwann 1839 ALL ANIMALS made of cells
Virchow 1900 All cells come from
pre-existing cells
“Cell Theory”
HOW much work
goes into making a theory???
Cell Theory
Developments in Cell Biology
All due to invention of the....
Remember those
characteristics of LIFE? 1. organized parts
2. obtain energy from surroundings
3. perform chem. Reactions (metabolism)
4. change over time (evolution); common
history—all are related
5. respond to environment
6. reproduce
7. homeostasis
p. 71 #1-6, 8
REVIEW
• What is a Cell? – The smallest thing that can perform life
processes
• Who was the first person to look at LIVING cells?
–Anton van Lueewenhoek
• Who was first to look at Dead Cells?
–Robert Hooke
REVIEW • What is the cell theory?
– All plants are made of cells, animals, all cells come from cells
• What part did Schleiden plan in developing the Cell Theory?
– all plants are made of cells
• Schwann?
– all animals are made of cells
• Virchow?
– all cells come from cells
Calculating Magnification!!!
• A biologist’s looking at a cell in the
microscope & it’s magnified 40 times.
• The cell in the photo is 2 mm in
diameter
• What’s the TRUE diameter of the cell in
micrometers (um)?
=2mm/40 = 0.05mm
0.05mm x (1000um/1mm) = 50 um
Yogurt! Mmmm!
• Observing Bacteria Cultures in Yogurt!
• Objective: Observe yogurt under a
microscope and sketch your observations.
• SAFETY: Microscope handling,
glassware safety, chemical safety
4.2: Intro
to Cells
What the CELL?!
Cell Diversity
Form follows Function!
Cell Shape Why the differences?
Cell Size Giraffe nerves...2 meters long
Human egg cell... “.”
But MOST are _________________
LIMITED BY:
SA : Vol
Small Objects have
HIGHER SA: Vol
= a good thing!!
Finishing up 4-2:
Intro to Cells
http://www.hancockwildlife.org/i
ndex.php?topic=White-Rock-
Eagle1#CloseUp
3 Basic Parts of a Cell
3 Basic Parts of a Cell
Two Basic Types of Cells
Prokaryotes vs. Eukaryotes
http://my.hrw.com/sh2/sh07_10/student/flash/visual_concepts/60052.htm
Organization of Cells
• Colonies
• True Multicellularity
– Heirarchy:
Heirarchy of Organization
REVIEW • What are the three basic parts of all cells?
– Plasma membrane, cytoplasm, Control Center
• What is the factor that limits cell size? – Ratio b/w volume and surface area.
• Explain how the volume to surface area ratio limits cell size. – If the vol. is too great the insufficient surface area
cannot move materials efficiently across the cell membrane.
Differences between pro & eukaryotic cells??
Prokaryotic Cell
Eukaryotic Cell
p. 76
Biobucks Due!
Have your green sheet out &
any items you’re turning in
today.
4-3:
Cell Organelles &
Features
What cell type has lots of
organelles??
• Has lots of membrane systems &
membrane-bound organelles, too!
Plasma Membrane
Plasma Membrane
Plasma
(cell)
Membrane
• Structures: Functions:
Plasma Membrane Model!!
• Build a model of the plasma membrane
with your partner…
http://my.hrw.com/sh2/sh07_10/student/flash/visual_concepts/60058.htm
NUCLEUS
• Structures: Functions:
Mitochondrion (-ia, plural)
• Structures: Functions:
Ribosomes
• Structures: Functions:
p. 85 #1-2
E.R.
Endoplasmic Reticulum
• Structures: Functions:
Golgi Apparatus
• Structures: Functions:
VESICLES
• Structures: Functions:
1.
2.
3.
4.
5.
p. 85 #3-6
Cytoskeleton
• Structures: Functions:
• Structures: Functions:
• Structures: Functions:
Cilia Flagella
Centrioles
http://my.hrw.com/sh2/sh07_10/student/flash/virtual_investigations/hx/hxcsf_vi.html
Tour of a Virtual Cell:
p. 85 #1-6
Quiz Today!
Turn in Vocab (4.1-4.3) &
Study Guide
4-4: Plant Cells
PLANT CELL
http://my.hrw.com/sh2/sh07_10/student/flash/visual_concepts/60069.htm
3 Features Unique to
PLANT CELLS: 1. Structure: Function:
3 Features Unique to
PLANT CELLS: 2. Structure: Function:
3 Features Unique to
PLANT CELLS:
3. 3 types of plastids
Structure: Function:
a.
b.
c.
Comparing!
p. 90 #1, 4, 5, 7
Ch 4 Review & Vocab WILL be
collected WEDNESDAY!!!!
1. 2. 3. 4.
5. 6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Ch 4 Review:
#1-3,5-14,16-21,25,26,27
