Friday, August 28, 2009

The "Dirty Dozen"

HW for Sept 3:

Make sure your written response to the Evolution article is ready

Have your 1999 exam analyzed on the paper I gave you. Only mark incorrect answers.

Begin reading CH. 22

There are 12 AP Biology Labs. Each lab covers an important overarching concept in AP Biology.

At the bottom of this blog I have created a link for you called "AP Lab tutorials". This link will take you to a website which contains each of the 12 labs in an interactive format. Please visit this website often. Pay close attention to the objectives and outcomes for each lab.

Lab 1: Diffusion & Osmosis

Lab 2: Enzyme Catalysis

Lab 3: Mitosis & Meiosis

Lab 4: Photosynthesis

Lab 5: Cell Respiration

Lab 6: Molecular Biology

Lab 7: Genetics of Organisms

Lab 8: Population Genetics

Lab 9: Transpiration

Lab 10: Circulatory Physiology

Lab 11: Animal Behavior

Lab 12: Dissolved Oxygen

Currently we are studying Unit 8: Evolution which corresponds to Lab 8: Population Genetics. Here are the concepts behind population genetics:

In 1908 G. Hardy and W. Weinberg independently proposed that the frequency of alleles and genotypes in a population will remain constant from generation to generation if the population is stable and in genetic equilibrium. Five conditions are required in order for a population to remain at Hardy-Weinberg equilibrium:
1. Large population

2. Random Mating

3. No Mutations

4. No Natural Selection

5. No Immigration
Equations:
p + q = 1

p2 + 2pq + q2 = 1
p= dominate allele

q= recessive allele

Here is a link that has more information on HW equilibrium:

http://www.mhhe.com/biosci/esp/2001_gbio/folder_structure/ev/m2/s4/index.htm

Wednesday, August 26, 2009

8 Themes in AP Biology

Welcome to AP Biology! I am glad that we will be on this journey together! Until we are up and running I will be posting what we have covered in class, plus a few extras.






8 THEMES OF AP BIOLOGY




Theme 1: SCIENCE AS A PROCESS Description: Science is a way of knowing. It can involve a discovery process using inductive reasoning, or it can be a process of hypothesis testing.Clarification: Provide examples of how the scientific process has been used to develop our knowledge about how the biological world works.



Theme 2: EVOLUTION Description: Biological change of organisms that occurs over time. Which is driven by the process of natural selection. Evolution accounts for the diversity of life on Earth.Clarification: Provide examples of evolutionary change in populations of organisms that we have been able to observe or have evidence of.



Theme 3: ENERGY TRANSFER Description: Energy is the capacity to do work. All living organisms are active (living) because of their abilities to link energy reactions to the biochemical reactions that take place within their cells.Clarification: Provide examples of how organisms are able to capture energy and utilize it to do the work that supports life.



Theme 4: CONTINUITY & CHANGE
Explanation: All species tend to maintain themselves from generation to generation using the same genetic code. However, there are genetic mechanisms that lead to change over time, or evolution.Clarification: Provide examples of how organisms reproduce while maintaining the same genetic information from generation to generation AND also examples of how organisms reproduce while accumulating changes to their genetic information from generation to generation.



Theme 5: RELATIONSHIP OF STRUCTURE & FUNCTION Explanation: The structural levels from molecules to organisms ensure successful functioning in all living organisms and living systems.Clarification: Provide examples of structure-function relationships in living organisms. How specific molecules, organelles, cells, tissues, organs, and body structures are structured to support the functions that they perform. (Don't forget plants!)



Theme 6: REGULATION Explanation: Everything from cells to organisms to ecosystems is in a state of dynamic balance that must be controlled by positive or negative feedback mechanisms.Clarification: Provide examples of how a dynamic equilibrium is maintained at different levels of life, from homesostatic control of cellular and body conditions to maintenance of population levels in ecosystems.



Theme 7: INTERDEPENDENCE IN NATURE Explanation: Living organisms rarely exist alone in nature.Clarification: Provide examples of how organisms must interact together to live successfully.



Theme 8: SCIENCE, TECHNOLOGY & SOCIETY Explanation: Scientific research often leads to technological advances that can have positive and/or negative impacts upon society as a whole.Clarification: Provide examples of how technological innovations have helped advance science while those technological accomplishments may have also had either beneficial or deleterious impacts on human society.



Link to the Harvard Inner Life of the Cell Video: