10/5/10 scribepost

1. Mr. Paek showed us that period 4 have more countries that visited their blog than period 8's blog.

2. Mr. Paek collected the cell diagram sheet that was due today. (gave 2 minutes to fill out the roles of the organells for those who didn't do that.)

3. He showed us a power point and went over the cell organelles very quickly. We didn't even have time to write down the notes.

Things you have to know for the quiz tomorrow.

• Cell theory

1. All living things are composed of cells
2. cells are the basic units of structure and function in living things
3. new cells are produced from existing cells

• Cells

1. Prokaryotes- no nucleus Ex. bacteria, more old cells
2. Eukaryotes- has a nucleus and is more recent

• Organelles

Study the yellow organelle chart! In the quiz, there is going to be a section where you have to label and describe the roles of each organelles.

These are few we organelles that we talked about... you didn't need to take notes.

1. know the structure of the cell membrane. It's slectively permeable which means that they are very slective in what it lets in and out
2. Lysosomes- "Lyse"-break stuff down.
3. Vacuoles- store stuff
4. Golgi Apparatus- package stuff
5. and more.

After all the quick explaination of the organelles, we took notes. This won't be in the quiz tomorrow but you'll have to know these for the test. The powerpoint is in moodle!

• Where does cells get energy?- cells use ATP for energy (sugar that is broken down)
• Why does our body need oxygen?- b/c body can't break down sugar without oxygen

Respiration (occurs in mitochondria)

step 1- Glycolysis (splits sugar to 2 ATPs)

c-c-c-c-c-c sugar

c-c-c --- c-c-c

step 2 - process is called aerobic respiration (with oxygen) is more effective then fermentation

1. krebs cycle
2. electron transport system
3. provides 34 ATD for each mitochondria

OR

step 2- fermentation (no oxygen)

2 different types of fermentation

• lactic acid- if it builds up, causes cramp
• alcoholic

5. We filled out pages 21 and 22 in UP packet. Try it without having to look at the organelle chart. We corrected it together after everyone was done.

6. Mr. Paek gave us a prelab worksheet. We got class time to finish it. Use pages 33 and 34 in UP to answer questions. We are doing this lab tomorrow.

Homework: Study for quiz, and finish the prelab worksheet if you didn't finish it in class.