microscope lab completed quietly (12-inch voices) 4 people to a microscope (separate papers) look at...
TRANSCRIPT
Microscope Lab
Completed quietly (12-inch voices) 4 people to a microscope (separate papers) Look at the image Identify the phase Draw a picture Explain what happens in that phase (how do you
know) Move to the next slide
Creative Application
Quietly get white or construction paper. Make a visual representation of the 6
stages. Interphase. Mitosis. Cytokinesis. Beneath each picture tell me what happens.
Catalyst
What is your goal for tomorrow’s test? What do you need to do today to reach that goal? http
://www.youtube.com/watch?v=HYKesI9jL8c Take out your binders and prepare to review
them.
Binder Check Take out a sheet of paper. Label it “Binder Check: 9/28/2012”. Put it on the top of what is in the rings of
the binder. All things in rings, neatness evident (10 pts) Notes, Quizzes, Tests, and Assignments in
correct places (10 pts) Tracking sheets for each section (10 pts) Test and Quiz Tracker complete w/ investors
(10 pts) Catalyst completion and evident effort (10 pts)
Mitosis
Interphase (G1, S, G2) Prophase Metaphase Anaphase Telophase Citokinesis
Interphasehttp://www.youtube.com/watch?v=LLKX_4DHE3I&feature=related
diagram microscopic image
Prophase
diagram microscopic image
Metaphase
diagram microscopic image
Anaphase
diagram microscopic image
Telophase
diagram microscopic image
Citokinesis
Notecards
Split your paper up into 8 boxes. Tear/Cut your paper into 10 squares. Label your squares with the following
organelles. nucleus, mitochondria, ribosomes, chloroplasts,
vacuole, lysosome, cell wall, cell membrane, endoplasmic reticulum, golgi body
Draw a picture under the label. Write the function on the back.
Study Guide
Complete and turn in with your test tomorrow for extra credit.
Questions?
Mitosis QUIZ
PLEASE NUMBER YOUR PAPER 1-10
Hint:
Some answers may be used more
than once!!!
1. What phase of Mitosis is this?
Hint
2. What phase of Mitosis is this?
Hint
3. What phase of Mitosis is this?
4. What phase of Mitosis is this?
Hint
Hint
5. What phase of Mitosis is this?
6. What phase of Mitosis is this?
7. What phase of Mitosis is this?
8. What phase of Mitosis is this?
9. What phase of Mitosis is this?
10. What phase of Mitosis is this?
Answers:
1. Interphase2. Prophase3. Metaphase4. Anaphase5. Telophase6. Prophase7. Metaphase8. Telophase9. Anaphase10. Interphase
Revisiting Our Big Goal and Expectations Goals Expectations Procedures
Entering Class Binders, folders, Catalyst
On the Rock Bell, Hand Raise, Ball
Bathroom Labs/Group Work
RAM CATALYST
For the next 4 minutes SILENTLY write. Write a story about a protein that was
made in the cell. Characters must include: nucleus,
mitochondria, endoplasmic reticulum, ribsomes, Golgi Body, DNA, and RNA, Cell Membrane.
III. What do cells share?A. Structures found in ALL cells
1. DNA organized as
chromosome(s). DNA directs cell activity.2. Cytoplasm is the “filling”
of the cell and is made of up to 90% water. Water provides the necessary environment for all the chemical reactions the cell needs.
3. Ribosomes are organelles that are the site of protein synthesis. Proteins are essential for enzymes, structure and communication.
4. Cell membrane (plasma membrane)a. Composed of a phospholipid bilayer with embedded proteins. The fluid mosaic model describes the structure of the cell membrane.
i. Fluid – Individual phsopholipds and proteins can move past each other; they are not fixed in one position.
ii. Mosaic – The membrane has more than one type of molecule (phospholipids and proteins)
5. Functions of the cell membranei. Selectively permeable – regulates what
enters and leaves the cell. This helps maintain homeostasis.
ii. Gives the cell (cytoplasm) shape.
Structures in All Cells:
* Cell membrane – forms the barrier to separate inside the cell from the outside
environment
*Cytoplasm – the filling of the cell, mostly water
*DNA – molecule with directions to control the cell
*Ribosome – organelle that builds proteins; site of protein synthesis
B. Structures (organelles) found in EUKARYOTIC cells1. Nucleus- surrounds the chromosomes for additional protection; is made of a phospholipid bilayer 2. Mitochondria – site of cellular respiration which produces cell energy (ATP). Structure contains folded membranes which increases
surface area allowing more space for more reactions.
3. Vacuoles – store food, waste or water to be used inside the cell or excreted from the cell. Size differs in plant vs. animal cells.
4. Lysosomes – contain digestive enzymes which digest food contained in vacuoles as well as old or damaged cell parts
5. Endoplasmic Reticulum (ER) – a series of interconnected folded membranes that function in modifying (changing) proteins, detoxification of alcohols, and communication.
6. Golgi Complex – packages materials for export from cells.
C. Structures found ONLY in plant and plant-like cells1. Chloroplasts – organelles full of
chlorophyll that are the site of photosynthesis which produces sugars (C6H12O6); composed of folded membranes for more surface area.2. Cell wall – provides extra support, protection, and shape for the cell; found outside the cell membrane and made of cellulose.
D. Structure found ONLY in animal cells1. Centrioles – organelle that helps with cell division in animal cells.
Independent Work Make a Facebook page for an organelle.
Include: Picture. Status update. 4 Friends (with pictures). Location. Job. 5 Wall posts from other organelles.
When you are done. Finish answering questions in your notes.
Catalyst
Pick a type of cell. Prokaryotic or Eukaryotic.
Write an argument as a eukaryotic or prokaryotic cell (the one you picked) addressing why you are SO much better than the other type.
Mitosis is so easy vampires can do it!
http://www.youtube.com/watch?v=Vc1UqeHhjeo
Khan Academy
http://www.youtube.com/watch?v=LLKX_4DHE3I&feature=related
Cell Division: Mitosis
Basic Animal Genetics, ANR.C.C7.5
Objective:
Understand the purpose of mitosis
Understand the process of mitosis
Explain the sequence and events of each phase
Review:
What are the two types of cells?
Eukaryotic Prokaryotic
What are prokaryotic cells?
Simple cells Few internal
structures No membrane
bound organelles One-celled
organisms, Bacteria
Examples of prokaryotic cell:
Bacteria
Cells
What are eukaryotic cells?
Cells that contain organelles surrounded by membranes Most living organisms
Examples of eukaryotic cells:
Plant
Cells
Animal
Cells
Human
Cells
Human
Cells
Plant Cell
(Tomato)
Animal Cell
(tiger)
How do prokaryotic cells divide?
Binary Fission
(A fancy name that scientists use to impress their girlfriends or boyfriends. A process where one prokaryotic cell becomes two.)
How do eukaryotic cells divide?
Mitosis!
What is mitosis?
(How eukaryotic cells divide.) A continuous process of four phases that
results in the division of the nucleus.
Making more cells!
Why do we care?
Once upon a time we were all one little cell.
Because of mitosis we are now made of trillions of cells.
This applies to animals too!
Made possible, in part by: MITOSIS
Made possible, in part by: MITOSIS
Made possible, in part by: MITOSIS
You get the idea…
The Phases of
Mitosis
The 4 Phases of Mitosis:
Prophase Metaphase Anaphase Telophase
What about Interphase?
Interphase is the resting period between cell division.
Why do we study diagrams first?
Easy to identify structures Clear Simple
Why do should we view microscopic images also?
To see the real deal! To reveal greater complexities.
Interphasehttp://www.youtube.com/watch?v=LLKX_4DHE3I&feature=related
diagram microscopic image
Interphase
Interphase is the “normal” part of the cell cycle. The Cells spend most of the cycle (life of the cell)
in interphase. There are three stages in interphase
G1 – Cell increases in size and synthesizes new proteins and organelles.
Interphase S – DNA is replicated.
During most of interphase DNA exists in a “relaxed”, stringy form called chromatin. After being copied, there are two complete copies of the DNA in the cell. These copies are attached to each other.
Each copy of DNA is called a chromatid. The two chromatids are attached in a region called the centromere. At this point in interphase, the chromatids are coiled / condensed. The entire structure is called a doubled chromosome.
Interphase
Interphase
Are the cells really pink and purple?
Nope, they are stained so that we can see the organelles better.
Prophase
diagram microscopic image
Prophase
Coiled chromosomes become visible Nuclear membrane is broken down Spindles (protein fibers that will attach to chromosomes and aid in chromosome
movement) start to form
Metaphase
diagram microscopic image
Metaphase
Spindle fibers attach to the centromere regions
Chromosomes are moved to the middle of the cell
Anaphase
diagram microscopic image
Anaphase
Spindle fibers shorten Doubled chromosomes are separated into chromatids Chromatids begin to move to opposite
poles/ends of the cell
Telophase
diagram microscopic image
Telophase
Spindle fibers are broken down Nuclear membrane begins to form around
the clusters of chromatids at each pole of the cell
Cyotkinesis
The separation of the cytoplasm (including all organelles) into two identical daughter cells. Animal cells constrict in the middle to pinch apart forming two different cells. Plant cells also produce a cell plate dividing the
two cells. This cell plate will become the cell wall.
They all look like blobs… how can
we tell them apart?
http://www.neok12.com/php/watch.php?v=zX5f0f055c0668530e707602&t=Cell-Division
What’s happening in each phase?
http://www.youtube.com/watch?v=HYKesI9jL8c