POWER POINT: MUTATIONS, PARTS 1 and 2

Here's a link to our recent notes on 'Mutation!'

A PDF of the Lecture Guide based upon the Power Point is available here.

FINAL UPDATE, FALL 2010 SEMESTER

Parents and Students:

Monday (Dec. 14th) begins the final week of instruction for the Fall Semester. This is a post to give everybody one last 'heads-up' about Finals week in Biology!

First of all, 'A Twist of Fate', an important 100-point project, is due on Friday (12/10), and no late work of any kind will be accepted after Tuesday (12/14)

This assignment is based on a reading describing the scientific detective story that led to the discovery of DNA's structure. The reading is adapted from an article by Michael Lemonick that appeared in the Feb. 17, 2003 issue of Time. That article can be read in its entirety on-line here.

Students are expected to define terms underlined in the article, and to answer four discussion questions according to the usual guidelines: complete sentences that refer to the original question and provide supporting evidence for the student's opinion.

Secondly, students will receive a Study Guide for their 200-point Semester Final on Friday (12/10)

Students should be reviewing it and using it to identify any weaknesses, as well as working to submit any other outstanding work in the course by the end of instruction (Tuesday, 12/14).

Next, there will be a Study Session after-school on Tuesday (12/14).

This Study Session will take place in my classroom (N-63). It will begin at 3:15 and end at 5:30 that evening. Students who attend will not only receive valuable feedback as to what to expect on the test, but will also receive 20 points of extra-credit.

And, finally...Finals! Our scheduled Finals are on (12/15) Wednesday for 1st and 2nd period, (12/16) Thursday afternoon for 4th period and (12/17) Friday for 5th and 6th period.

There is no makeup period scheduled. Students need to attend their final exam period. Those who fail to attend without having their parent or guardian reach a prior understanding with Mr. Hatfield will be given an 'incomplete' in the course.


Finally, the Power Point with notes on DNA and Protein Synthesis is available on-line here:


The Power Point notes are available for download here.

A PDF of the Lecture Guide based on the Power Point notes is available here.

POWER POINT: THE CELL CYCLE

The Power Point summarizing the Cell Cycle, based on the first two sections of Chapter 10, is available here:

UNIT 4: CELLULAR ENERGETICS (NOTES, ANNOUNCEMENTS)

IMPORTANT ANNOUNCEMENT:

The material for our current unit (Unit 4: Cellular Energetics) is detailed and builds heavily on both the material from Ch. 2 (The Chemistry of Life) and Ch. 7 (Cellular Structure and Function).

As such, there are several groups of notes of various sizes for students to access.

First, this Power Point 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.
.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:

I have been forced to modify my syllabus due to the impact of some technology problems in last Wednesday's class and the imposition of a furlough day. Be advised of the following changes:

All of the Unit 4 assignments are due when students return to school after Thanksgiving Break, on Monday, Nov. 29th. This will also be the date for the AFTER-SCHOOL STUDY SESSION (3:15-5:30) for the Unit 4 Test.

The Unit 4 test has been moved back one week, to Tuesday, Nov. 30th. No work from Unit 4 will be accepted after this date. Students who miss their scheduled exam will receive a makeup test.

ATLAS: STILL SHRUGGING?

ATLAS ACCESS!


DEAR PARENTS AND STUDENTS: This is Mr. Hatfield, your student's Biology teacher at Bullard.

I am VERY concerned that many parents and students are still unable to access grades and attendance on-line.

I am therefore providing this blog post with information on district resources now available, but I have also sent the same information out via email. If you did not receive an email with this information, please contact me immediately by sending an email to: epigene13@hotmail.com


Parent ATLAS access is available NOW at http://bhsknights.com.

There is a link on the left side, as shown below:

Unfortunately, many students have either yet to learn how to access ATLAS themselves or have failed to share that information with the home. We have to correct that, immediately!

CELL BROCHURE PROJECT

Many students have not yet completed their 100-point Cell Brochure project.

This is a grave concern. Students who do not complete this are likely to be assigned STUDY HALL and...perhaps....Saturday School. There simply is no excuse for not completing this assignment, which is intended to help students raise their grade.

A link to a PDF file describing the project is available here.

POWER POINT: THE FLUID MOSAIC MODEL OF THE CELL MEMBRANE

You can get the Power Point for 'The Fluid Mosaic Model of the Cell Membrane" here. There are drawings in Chapter 7 of your text, particularly the one on pg. 182, that would be good for students to have completed in their notes. Mr. Hatfield, as always, recommends that students use colored pencils to complete their drawings in their Cornell Notes.