Tuesday, January 15, 2013
Wednesday, January 16, 2013
“Practice Scenarios”
Warm Up:
1) List the three points of the cell theory
from your homework last night.
2) Describe the difference between
unicellular and multicellular
organisms.
Tuesday, January 15, 2013
Wednesday, January 16, 2013
Cell Transport
Cell – the basic unit of all life
Semi-permeable – some objects can pass through
cell membrane (mostly water)
Basic Cell Organelles:
Cell Membrane – protects cell/gatekeeper
Cytoplasm – fluid inside cell/ helps keep shape
Nucleus – typically holds cells genetic material
Prokaryotic vs. Eukaryotic Organisms
Prokaryotic – single-celled organisms, no nucleus
- usually bacteria, not very complex
Eukaryotic – multi-cellular organisms, nucleus
- usually more complex with more organelles
Movement Into and Out of Cells:
Diffusion: movement from an area of high
concentration to low concentration
Homework: Complete the “practice” found on
the last notebook page for today
Page 81
Osmosis: diffusion of water across a semipermeable membrane
Page 82
Using Energy to Transport Materials Across the Cell Membrane
Two Main Categories:
Passive Transport/Diffusion (usually small particles) – Moves substances from areas of high
concentration to areas of low concentration
Example: Food coloring added to a beaker of water:
before
after
Active Transport (usually larger particles) – Relies on the cell using energy (ATP) to move particles
across the membrane
Three Categories:
1. Transport Proteins: Special proteins use energy/ATP to pump materials into cell (gatekeeper)
2. Endocytosis: membrane surrounds particles to move them inside (see diagram on next slide)
3. Exocytosis : release of substances from inside vesicles through joining and then releasing
from the cell membrane (see diagram on next slide)
Exchanging materials between the
cell and its environment
Passive Transport
Diffusion
Active Transport
Transport
Proteins use ATP
Endocytosis (reverse for Exocytosis)
Osmosis
Video’s and Examples
Passive and Active Transport Animations
Endocytosis and Exocytosis Animation
Homework/Practice
DIRECTIONS- First Identify if the process is moving materials by active or passive transport.
Then determine if the process is diffusion, osmosis, transport proteins, endocytosis, or
exocytosis.
1. WATER MOVES OUT OF PLANT LEAF, CAUSING IT TO WILT
AND DRY.
2. IF YOU PLACE A TEA BAG IN WATER AND TEA IS MADE.
3. IF FOOD THAT IS TOO LARGE TO ENTER THROUGH THE CELL MEMBRANE IS BROUGHT INTO THE
CELL TO KEEP IT FROM DYING.
4. YOU SMELL THE DELICIOUS ODOR OF BAKING COOKIES BEFORE YOU ENTER THE KITCHEN.
5. FRESH WATER MOVES INTO A SINGLE CELLED ORGANISM.
6. A ONE CELLED AMEOBA SURROUNDS A PARTICLE OF FOOD.
7. EXCESS SALT THAT AN IGUANA HAS SOAKED UP IN THE OCEAN IS REMOVED THROUGH THE
NOSTRILS.
8. IF A PLANT PUMPS MINERALS FROM THE SOIL TO THE ROOT OF THE PLANT.
Thursday, January 17, 2013
Friday, January 18, 2013
Organelle Chart
Warm –up
1. How are the various jobs in a town or
a company divided up among people?
Provide examples.
2. Why is it effective to divide the labor
in this way?
Thursday, January 17, 2013
Friday, January 18, 2013
Organelle Scavenger Hunt - BYOT
Organelle:
– parts of a cell with specific function
– structure in the cytoplasm of
eukaryotic cell that can act as a storage
site, process energy, move materials, or
manufacture substances
Mini-web quest using
www.cellsalive.com
www.biology4kids.com
Homework:
Create chart of cell organelles and their
functions
Tell whether the part is in plant, animal,
or both cells
Page 83
Page 84
Wednesday, January 23, 2013
Thursday, January 24, 2013
Wednesday, January 23, 2013
Thursday, January 24, 2013
Make a Cell Concept Map (see below)
Warm Up:
Job in the
Factory
Cell Organelle
Function of
the Organelle
Chief Executive
Officer (CEO)
Assembly line
where workers
assemble
product
Finishing/
Packaging
department
Power Source
Cell Organelle Quiz and Cell Cycle Notes
Respiration and Photosynthesis: - reactions are
complete opposites of each other
Respiration:
C6H12O6 + 6O2
ATP + 6 H2O + 6 CO2
Photosynthesis:
Sun + 6 H2O + 6 CO2
C6H12O6 + 6O2
Turn to pages 48 – 52 of your text book and
find the steps of each of these processes.
Make a t-chart with a numbered list to
explain the reaction step by step.
Photosynthesis
Respiration
Security Guard
Homework: Make a concept map with Cell in the
middle and 4 spokes coming out titled: division,
transport, animal and plant. List the vocabulary
words we’ve done in class under the specific category
Page 85 they belong to.
1.
2.
3.
1.
2.
3.
Page 86
Wednesday, January 23, 2013
Thursday, January 24, 2013
Wednesday, January 23, 2013
Thursday, January 24, 2013
Cell Organelle Quiz and Cell Cycle Notes
Warm Up:
Job in the
Factory
Chief Executive
Officer (CEO)
Assembly line
where workers
assemble
product
Finishing/
Packaging
department
Power Source
Security Guard
Cell Organelle
Function of
the Organelle
Cell cycle - normal sequence of the development
and division of a cell
Three main stages:
1) Interphase - cell is performing normal
functions and preparing to divide
- the longest part of the cycle
- cell grows about twice its original size
- goes about regular cell activities
- DNA is copied to prepare for mitosis
2) Mitosis - nucleus splits and divides
- prokaryotes do not do this (no nucleus)
- usually the shortest period in cycle
- goal of mitosis is to transfer DNA and
other cell structures from parent cell
to new cell
3) Cytokinesis – occurs directly after mitosis
- parent cell pinches off
- two genetically identical cells form
Homework:
Page 85
Page 86
Cell Cycle
Mitosis
Cytokinesis
Interphase
Interphase
Helpful Animation
Interphase
Cell Cycle Diagram
Interphase
Cytokinesis
Mitosis
Friday, January 25, 2013
Monday, January 28, 2013
“Find the Cell Phrase” worksheet
Warm –up
Friday, January 25, 2013
Monday, January 28, 2013
Relooping and Steps of Mitosis
Mitosis notes – See pg 82 E and handout with
diagrams or animation below
1. Turn to Textbook page 68E and answer
questions 25 – 27.
Homework:
1. “Find the Cell Phrase” worksheet
Page 87
Good Mitosis Animation
Page 88