"A Cell Is Like a" Presentation Day

Great Job today Presenting your projects!!  I am very impressed with your creativity when coming up with these analogies!!  On to the next topic tomorrow!!

 

****Don't forget to finish your study island questions for me!!!***

 



A cell is like a wrap up... chapter wrap up.... study island

Friday and Monday we had work days on our "A Cell is like a...." project.  Don't forget the posters and write ups are due to me Tomorrow!!!!
I also made available on Edline the Daily Question Quiz Exemption Form if you would like to be exempt from one of our daily question quizzes. 

I also made the 1st nine weeks extra credit available on edline and passed out hard copies of this on Monday. 

Today we wrapped up this chapter with some final daily questions and worked through Study Island questions.

Tuesday October 22^nd

Some disorders are caused by a lack of lysosomes in the cells of a particular tissue, what would result from this? (What would happen in the cell? – First look on your notes to see what lysosomes DO)

Since the role of lysosomes is to break down the "junk" in a cell, this will end up building up in cell causing it to become "toxic."  Many of the disorders I suggested for your extra credit assignment are lysosomal disorders.  Here is the abstract from a scientific article about lysosomal disorders.

 

 

"Many neurodegenerative diseases are characterized by the accumulation of undegradable molecules in cells or at extracellular sites in the brain. One such family of diseases is the lysosomal storage disorders, which result from defects in various aspects of lysosomal function. Until recently, there was little prospect of treating storage diseases involving the CNS. However, recent progress has been made in understanding these conditions and in translating the findings into experimental therapies. We review the developments in this field and discuss the similarities in pathological features between these diseases and some more common neurodegenerative disorders."

 

If the Golgi apparatus was out of order in a cell, what would the direct result of that be regarding protein production and transportation? (First look in your notes to see what the golgi apparatus does)

If the Golgi apparatus went on strike - Proteins that were made on the Rough Endoplasmic reticulum would not be processed and transported out of the cell.   Here is another abstract from a scientific article about the link between Golgi apparatus malfunction and Alzheimer's

Abstract
Alzheimer’s disease is an irreversible, progressive neurodegenerative disorder leading invariably to death, usually within 7–10 years after diagnosis and is the leading cause of dementia in the elderly. Not only is Alzheimer’s disease a tragic disease in which people suffer from neurodegeneration in the years to come, it also becomes an incredible burden on the public health system. However, there is currently no effective treatment to halt the progression or prevent the onset of Alzheimer’s disease. This is partly due to the fact that the complex pathophysiology of Alzheimer’s disease is not yet completely understood. Recently, Golgi apparatus is found to play an important role in Alzheimer’s disease. In this review, we discuss the changes of Golgi apparatus during clinical progression and pathological development of Alzheimer’s disease. First, changes of Golgi apparatus size in Alzheimer’s disease are summarized. We then address the role of Golgi apparatus in the neuropathology of Alzheimer’s disease. Finally, the role of Golgi apparatus in the pathogenesis of Alzheimer’s disease is discussed. Understanding the contribution of Golgi apparatus dysfunction to Alzheimer’s disease and its pathophysiological basis will significantly impact our ability to develop more effective therapies for Alzheimer’s disease.

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Then you answered the questions on Study Island.  If you did not finish those today in class, I ask that you complete that by Friday.

 

Organelles wrap up and project brainstorming time

Daily Questions – Thursday October 17^th

Studies of fat cells and thyroid cells show that fat cells have fewer mitochondria than thyroid cells. A biologist would most likely infer that fat tissue….

a. does not require energy

b. Has energy requirements equal to thyroid tissue

c. Requires less energy than thyroid tissue

d. Requires more energy than thyroid tissue.

After germination, continued plant growth pushes first the shoot and then the leaves through the soil.  We would expect the emergent leaf cells to contain many Chloroplast for photosynthesis.  Because the developing stem must support the plant, we would expect those cells to develop Cell Walls

I had you write two more slides of notes today about cilia and flagella before you started working on your "A Cell is Like a....." Project.

 
I then handed out the guidelines for the project and had you get to brainstorming!!! 

 I LOVED what I was hearing from you guys as you worked through your analogies.  Some of the analogies I heard were A cell is like a: Football team, Snow Mobile, Softball Team, School, House, Army.....
 
Great Start guys!!  You will continue working through the analogy tomorrow after the DQQ

Wrap up of organelles - Intro to project

Today's Daily Questions allowed us to have a great conversation about what was wrong about all the wrong answers here.  You guys did a great job telling me what made each wrong statement incorrect.  Here is a basic summary of what we came up with for the daily questions.

 

 



We then finished up our notes on the different organelles in preparation for the "A Cell is like a ....." Project.  Tomorrow you will begin to collaborate with your classmates on coming up with your own analogy to explain the parts of a cell!.  Here's what we finished up with today.

 Below are a couple videos that are a great wrap up of the different parts of a cell if there are any that you are still unsure about.



intro to cells

here are the last couple days worth of daily questions and the notes on cell structure and function so far.

Thursday October 10^th

The cell is the basic unit of structure & function in all living organisms.

The human body has about 200 different types of cells with VERY different functions.  What determines the function of a liver cell compared to a kidney cell? The shape (structure) of the cells determine function.

The main difference between prokaryotic and eukaryotic cells is the presence or absence of what? A nucleus 

Tissue is composed of a group of

(1) similar cells working together

(2) different organs working together

(3) organ systems working together

(4) nuclei in a cell working together

Tuesday october 15th 

Humans require organ systems to carry out life

processes. Single-celled organisms do not have

organ systems and yet they are able to carry out

life processes. This is because

(1)  human organ systems lack the organelles found in single-celled organisms

(2)a human cell is more efficient than the cell of a single-celled organism

(3)  it is not necessary for single-celled organisms to maintain homeostasis

(4)  organelles present in single-celled organisms  act in a manner similar to organ systems

The structures found in a living cell can be compared to the parts of a factory that produces cars. Which part of the factory is most similar to the nucleus of a living cell?

(1) a conveyor belt that transports materials

(2) a storage bin that holds the pieces needed to assemble a car

(3) the computer room that controls the assembly process

(4) the generator that provides energy for the factory 

We talked through this slide but I did not require you to write it in your notes.

Enzyme Wrap Up

Today we started with the following Daily Questions:

We then finished up the notes about enzymes as we applied them to the lab from yesterday.

Enzyme Lab

Friday we had our daily question quiz to wrap up Organic  Molecules, Monday you worked on Study Island to take the Keystone Exam Pre-test and then do the Organic Chemistry and Water questions.  Both of those I asked you to answer a minimum of 20 questions.

Tuesday we had our enzyme lab - this will make some of the notes that we took more "real"!!  This was a pretty messy/stinky lab as we were dealing with liver enzymes!!  Here was the introduction.

Some of the pics from the lab are below:

First we looked at the effects of the enzyme
catalase on the breakdown of Hydrogen Peroxide
in cells.  (see Introduction.)

When liver is placed in the hydrogen peroxide
gas is produced (oxygen that is being released)
what is left would be simply water

We then tested different factors that
effect the rate of enzyme action such as
pH and Temperature.  Some reactions
happened faster than others. 

For instance here you can see how changing the pH
changed how fast the reactions occurred.  In this case the
middle reaction (at a neutral pH) worked the fastest.