This 103-slide package of teaching PowerPoint presentations covers all of 2.C (Feedback) in the AP Biology (2015) curriculum. Each slide includes the 'Essential Knowledge' being covered as well as key terms that students should make note of (editable).
Unit 2.D includes four sections:
• 2.D.1 - Biotic & Abiotic Factors
• 2.D.2 - Homeostasis Mechanisms
• 2.D.3 - Homeostasis Disruptions
• 2.D.4 - Chemical Defenses
The presentations themselves contains minimal information as they are intended to be used with teacher guidance. There are 'Video' slides throughout which link to relevant and informative YouTube content. The slides are formatted to be visually pleasing and to also print well for handouts or revision. Please see the preview file (first 8 slides) for an idea of the aesthetic and level of detail in the presentation. The relevant 'Essential Knowledge' can be found below.
I have had success using these presentations to review topics after students have been exposed to the material at home. I typically have the class read relevant material (book, site, etc.) and then watch the videos the day before introducing a topic. During the class period, I use the slides to structure the discussion around the AP Bio Essential Knowledge objectives. The remaining class time is spent reinforcing the knowledge or working on activities geared toward the 'Learning Objectives'.
I have included PDF version of the PowerPoints for handout purposes.
**These presentations are based on the AP Biology Course Guide and does not follow any textbook
As always, please let me know if you have any suggestions for improvements. These are always a work in progress!
Dokimi AP Biology PPTs:
AP Biology PPT Bundle (Big Ideas 1-4)
Big Idea 1 - Evolution (BUNDLE)
• 1.A - Evolution (all)n
1.A.1 - Natural Selection
1.A.2/3 - Phenotypic Variation & Genetic Drift
1.A.4 - Evidence for Evolution
• 1.B - Phylogeny
• 1.C - Speciation
• 1.D - Origin of Life
Big Idea 2 - Matter (BUNDLE)
• 2.A - Energy & Matter (all)
• 2.B - Cell Membrane
• 2.C - Feedback & Response
• 2.D - Environmental Effects
• 2.E - Regulation & Coordination
Big Idea 3 - Information (BUNDLE)
• 3.A - Inheritance (all)
3.A.1 - DNA & RNA
3.A.2 - Cell Division
3.A.3 - Mendelian Patterns
3.A.4 - Non-Mendelian Patterns (free)
• 3.B - Gene Regulation
• 3.C - Genetic Variation
• 3.D - Cell Communication
• 3.E - Communication
Big Idea 4 - Interactions & Complexity (BUNDLE)
• 4.A - Interactions (all)
4.A.1 - Biomolecules
4.A.2/3/4 - Differentiation, Organelles & Organ System Interactions
4.A.5/6 - Community & Ecosystem Interactions
• 4.B - Competition & Cooperation
• 4.C - Diversity
2.D - Environmental Effects
Growth and dynamichomeostasis of a biological system are influenced by changes in the system’s environment.
2.D.1 - Biotic & Abiotic Factors
2.D.1: All biological systems from cells and organisms to populations, communities and ecosystems are affected by complex biotic and abiotic interactions involving exchange of matter and free energy.
a. Cell activities are affected by interactions with biotic and abiotic factors.
- Cell density
- Water availability
b. Organism activities are afected by interactions with biotic and abiotic factors.
- Symbiosis (mutualism, commensalism, parasitism)
- Predator–prey relationships
- Water and nutrient availability, temperature, salinity, pH
c. The stability of populations, communities and ecosystems is affected by interactions with biotic and abiotic factors.
- Water and nutrient availability
- Availability of nesting materials and sites
- Food chains and food webs
- Species diversity
- Population density
2.D.2 - Homeostasis Mechanisms
Homeostatic mechanisms reflect both common ancestry and divergence due to adaptation in different environments.
a. Continuity of homeostatic mechanisms reflects common ancestry, while changes may occur in response to different environmental conditions.
b. Organisms have various mechanisms for obtaining nutrients and eliminating wastes.
- Gas exchange in aquatic and terrestrial plants
- Digestive mechanisms in animals such as food vacuoles, gastrovascular cavities, one-way digestive systems
- Respiratory systems of aquatic and terrestrial animals
- Nitrogenous waste production and elimination in aquatic and terrestrial animals
c. Homeostatic control systems in species of microbes, plants and animals support common ancestry.
- Excretory systems in flatworms, earthworms and vertebrates
- Osmoregulation in aquatic and terrestrial plants
- Circulatory systems in fish, amphibians and mammals
2.D.3 - Homeostasis Disruptions
Biological systems are affected by disruptions to their dynamic homeostasis.
a. Disruptions at the molecular and cellular levels affect the health of the organism.
- Physiological responses to toxic substances
b. Disruptions to ecosystems impact the dynamic homeostasis or balance of the ecosystem.
- Invasive and/or eruptive species
- Human impact
- Hurricanes, volcanoes
- Water limitation
2.D.4 - Chemical Defenses
Plants and animals have a variety of chemical defenses against infections that affect dynamic homeostasis.
a. Plants, invertebrates and vertebrates have multiple, nonspecific immune responses.
- Invertebrate immune systems have nonspecific response mechanisms and may possess
pathogen-specific defense responses.
- Plant defenses against pathogens include molecular recognition systems with systemic
responses; infection triggers chemical responses that destroy infected and adjacent cells, thus localizing the effects.
- Vertebrate immune systems have nonspecific defense mechanisms against pathogens.
b. Mammals use speciic immune responses triggered by natural or artificial agents that disrupt dynamic homeostasis.
- 1. The mammalian immune system includes two types of specific responses: cell
mediated and humoral.
- 2. In the cell-mediated response, cytotoxic T cells, a type of lymphocytic white blood
cell, “target” intracellular pathogens when antigens are displayed on the outside of the cells.
- 3. In the humoral response, B cells, a type of lymphocytic white blood cell, produce
antibodies against specific antigens.
- 4. Antigens are recognized by antibodies to the antigen.
- 5. Antibodies are proteins produced by B cells, and each antibody is specific to a particular antigen.