Tuesday, November 9, 2010

November 9th

Today we took a quiz on Solutions in Biology. If you were absent today, please make sure that you plan on making up the quiz as soon as possible. Tomorrow we will be completing a study guide for our Unit 2 Test on Cells. Please make sure to be in class on time tomorrow!

Today's journal was:
Complete the following sentence:
Osmosis is the movement of _____________ molecules across a membrane from areas of ___________ concentration to _______________ concentration.

If you have been absent please take the time to look at the websites I have posted over the past few days. Below you will find more links to helpful websites:


Osmosis

Diffusion

Friday, November 5, 2010

Passive & Active Transport

Cell Membrane Passive Transport | Cell Biology

November 5th

Hi Kiddos,

This week we spent a great deal of time learning about solutions in biology; specifically isotonic, hypertonic, and hypotonic solutions. Yesterday and today we focused on cell transport, diffusion, active transport, and passive transport. Please review the links below so that you stay familiar with the things we are learning over the weekend. You will be receiving a quiz next week on these items on Tuesday. I hope you have a wonderful weekend and I will see you Monday! DON'T BE ABSENT!!!

Basic Cell Transport Definitions
Information on Active and Passive Transport (Look at the links on the left hand side of the website)

Today's Journal:
Explain what an aqueous solution is, and provide an example.

Wednesday, November 3, 2010

Solutions in Biology


Hello and welcome back from your 5 day weekend. I hope you had fun and I hope you are ready to learn all about Solutions, Diffusion, and Osmosis this week.

Today we focused on hypertonic, hypotonic, and isotonic solutions. The PowerPoint that we worked on today can be found below:

Solutions in Biology

The journal today was:
Explain the difference between cilia and flagella, and describe their function.

Tomorrow we will get started on diffusion and osmosis. See you then!

Tuesday, October 26, 2010

Oct. 26th

Today we took a break from our cell organelle poster project and focused on the structure and function of the cell membrane. If you were absent today, please take some time to look at the following videos so that you can better understand the cell membrane.


The journal today: If you were running a marathon and needed plenty of energy for your run, what organelle would you need plenty of to ensure that you had the energy to complete the marathon?

Cell membrane Video: Click here

And the second video is below:

Thursday, October 21, 2010

Cell Organelle Project

Today we kicked off our Cell Organelles and Analogies Project. If you were absent today, make sure you look at the Lab Group List and find out what lab you were placed in. You will be making posters with your group that provide analogies for each of the following organelles:
  • cell wall
  • cell membrane
  • mitochondria
  • nucleus
  • lysosome
  • chloroplast
  • smooth ER
  • rough ER
  • golgi apparatus
  • cytoplasm
  • vacuole
  • ribosomes
If you were absent today, be sure to get the write up for this project, from me ASAP!!!

Here are some great websites for organelle information

Organelles
Awesome website on Organelles and Analogies!

Wednesday, October 20, 2010

Oct. 20th




Today we focused on the organelles of a eukaryotic cell. Below you will find the vocabulary associated with each organelle.
  • synthesis: the process of producing or making something
  • cell membrane - the part of the cell which separates the external environment from the cytoplasm
  • cell wall - in plant cells, a tough, rigid structure made up of cellulose which is outside of the cell membrane
  • chloroplast - an organelle present in algae and plant cells that contains chlorophyll and is involved in photosynthesis
  • cytoplasm - gel-like substance in which all cellular components outside the nucleus are immersed.

    cytoskeleton - protein lattice structure which gives shape to our cells.

  • Golgi apparatus - an organelle in the cytoplasm that packages proteins and carbohydrates into vesicles for export from the cell.
  • mitochondrion - organelle where final cellular respiration steps takes place
  • nucleus - organelle which contains the DNA, organized into chromosomes; site of mRNA synthesis from DNA.
  • organelles - membrane-bound structures found inside the cell cytoplasm.
  • ribosome - subcellular structures (typically thousands per cell) that provide sites for protein synthesis; occur in cytoplasm and on rough endoplasmic reticulum.
  • rough endoplasmic reticulum (RER) - a system of membranous tubes and sacs containing ribosomes which function in the manufacture of membrane-bound proteins.
  • smooth endoplasmic reticulum (SER) - a system of membranous tubes and sacs that functions in lipid synthesis.
  • vacuole - large organelle in plant cells that contains water, often having dissolved pigments, waste materials, or other substances
The Journal for today was to describe at least three things you know about cells already.

The Homework Assignment for this evening was to:
Write a letter to your grandmother or grandfather describing the similarities and differences between a plant cell and an animal cell. Due 10.21.10

GO HERE FOR MORE INFORMATION ON PLANT VS. ANIMAL CELLS