POWER POINTS: CELLULAR ENERGETICS

In November, our Biology classes began covering material on how cells obtain, store and release energy. 

Since that time, there have been several groups of notes of various sizes for students to access.

First, this Power Point (previously given) contains an outline of photosynthesis, relating it to the 'Great Circle' of chemical reactions that all living things participate it (autotrophs and heterotrophs!), reactions which recycle the raw materials that life requires. Much of this material is covered in the first two sections of Chapter 8 in the Dragonfly Book.




The Power Point for Photosynthesis, Part I, is available here.



Photosynthesis, Part II provides much more detail about the light reactions, photosystems, the proton pumps that use the enzyme ATP synthase, the electron transport chains that help power those pumps. There is less detail about the 'dark reactions' of the Calvin cycle and other material which is not explicitly part of the state standards. This is covered in Section 8.3 of the Dragonfly Book.



You can download Photosynthesis, Part II here.

A third Power Point is somewhat brief, but has many helpful animations that help describe and explain the structure and function of ATP (adenosine triphosphate), the main energy-carrying molecule used by living things.   This builds on material in Section 8.1 of the text.


The fourth and final Power Point in this unit contains information about cellular respiration, including glycolysis (which takes place in the cytoplasm) and the Krebs Cycle (which takes place in the matrix of the mitochondria). The electrons produced in the Krebs Cycle move through the inner membrane, or cristae, of the mitochondria. The motion of these negatively-charged particles attracts protons (H+), and eventually a high concentration of protons within the membrane is available to drive 'proton pumps' that power an enzyme, ATP synthase, leading to the production of more ATP:





You can download the Power Point for Cellular Respiration here.

HOUSEKEEPING:

SATURDAY SCHOOL will be held on Dec. 13th, in Room N-63, between 8:45 and 11:30. Students who SELECTED for Saturday School will recieve a packet of illustrations to color and label based on materials from chapters 7-9 (cell membrane, transport, animal and plant cells, photosynthesis) 

UNIT 4 (CELLULAR ENERGETICS) BEGINS!

Students and Parents;

After discussion with my department, it has been determined that there will be only one more unit of instruction this semester.   

We have just finished the third unit on 'Cells and their Organelles', which covered material from chapters 7 and 19 in the textbook.  The fourth (and final) unit of this semester will cover photosynthesis (chapter 8), cellular respiration (chapter 9) and cell growth and division (chapter 10).

Students should be aware, however, that  previously-covered material from chapter 2 (chemical reactions and enzymes) and chapter 7 (cell membrane structure and function) will feature heavily in this final unit.   If students have not mastered that material, it is important that they review it prior to the final two weeks of instruction.

The new syllabus is found below:

UNIT 3 TEST TOMORROW

Parents and Students:

Our third Unit Test will occur tomorrow, on Thursday, November 13th.

Students were issued a Study Guide to this Test last week.   They have been given an opportunity to sign up for an After-School Study Session to be held TODAY, Wednesday, November 12th.

Students should come to class tomorrow with their Composition Books completed, including all drawings colored and labeled and all left-handed "output" pages completed.  They are allowed to use their Comp Books on their exam.   The Comp Books will be graded during the Exam period.

Students are allowed to come at lunch or after-school on exam days for additional time.   The guidelines for success on exams have been previously given IN THIS POST.

COME PREPARED!

POWER POINT: CELLS AND THEIR ORGANELLES

Here's the link you need to download this Power Point, to use to complete your notes or the Lecture Guide based upon it.

CHANGES TO SYLLABUS:

Lab 9 ("The Time Required for Mitosis") will be attempted in a future unit.

The Unit 3 Test has been moved to Thursday, November 14th.

The After-School Study Session to prepare for the Unit 3 Test has been moved to Wednesday, November 13th.

UNIT 3: THE CELL

Our second unit on 'The Chemistry of Life' is officially ended.   Some items on the Unit 2 syllabus have been folded into our next unit, which covers the "Structure and Function of the Cell" :

STUDENTS AND PARENTS:   Please note that Mr. Hatfield will be assigning students to SATURDAY SCHOOL on Saturday, Nov. 1st.

POWER POINT: THE CHEMISTRY OF LIFE

Here is the Power Point on 'The Chemistry of Life.'   Students received a Lecture Guide based on this Power Point in Friday's class, along with a Study Guide for their test.

STUDY SESSION AFTER SCHOOL on Tuesday, Oct. 14th, between 3:15 and 5:00.   The test is the following Wednesday.

POWER POINT: ACIDS AND BASES

HEY!

Here is the link to the Power Point on acids, bases and the pH scale.

Students should use this Power Point to make sure that their Interactive Notes are complete, and also to complete the Lecture Guide given in Thursday's class.