Tuesday, December 13, 2016
19.1 Viral Structure
This video helps us to understand the basics of a virus, including viral structure!!
Monday, December 12, 2016
Monday, October 31, 2016
Sunday, October 30, 2016
Monday, October 24, 2016
Wednesday, October 5, 2016
Tuesday, October 4, 2016
Sunday, September 25, 2016
Friday, September 23, 2016
Thursday, September 22, 2016
Friday, August 26, 2016
Monday, April 18, 2016
55.4 Nutrient Cycles
Labels:
carbon cycle,
nitrogen cycle,
phosphorus cycle,
water cycle
Taking Notes: typing or writing?
A little something to think about when you are trying to decide between hand writing or typing your notes.
http://www.npr.org/2016/04/17/474525392/attention-students-put-your-laptops-away?utm_source=facebook.com&utm_medium=social&utm_campaign=npr&utm_term=nprnews&utm_content=20160417
http://www.npr.org/2016/04/17/474525392/attention-students-put-your-laptops-away?utm_source=facebook.com&utm_medium=social&utm_campaign=npr&utm_term=nprnews&utm_content=20160417
Thursday, April 14, 2016
Tuesday, April 12, 2016
Thursday, April 7, 2016
Tuesday, April 5, 2016
53.5 Population Growth Factors
Population Growth Factors Video
Monday, April 4, 2016
53.3 Logistics Growth Video
Logistic Growth
This is a video and there is also a quiz which you can take after watching the video
This is a video and there is also a quiz which you can take after watching the video
Monday, March 28, 2016
Terrestrial Biomes 52.2 - Austin
If you missed Austin's Terrestrial Biomes presentation or need to refer back to it, I have uploaded it to google docs. Click here to take a shortcut.
Thursday, March 3, 2016
Wednesday, March 2, 2016
47.3 Cell Fate Blog Post
Cell Fate Specification
Definitions:
- Differentiation—changes involved in the progressive diversification of the structure and function of cells Acquisition of the characteristics that allow different cell types to perform their functions.
- Cell fate—what a cell will become (if left alone).
- Potency—what a cell could become
- Commitment—restriction in potency
- Specification—labile state where a cell has reversibly acquired fate (potency > fate)
- Determination—state where a cell has irreversibly acquired fate (potency = fate)
- Determinant—a molecule that regulates cell fate
- Morphogen—a molecule forms a gradient and regulates cell fate in a concentration dependent manner.
I. Types of Specificaton
- Autonomous Specification
- Remove a cell and the cell types normally derived from that cell will not form.
- Isolate a cell and it will form the cell types it normally would have.
- Conditional Specification
- Remove a cell and the cell types normally formed by that cell will be contributed by other cells (compensation)
- Syncitial Specification
- Important in insects
II. Autonomous Specification
- Asymmetric distribution and inheritance of determinants
- Determinants typically cytoplasmic
- Determinants usually RNAs or proteins
- MACHO mRNA localized in yellow cytoplasm of tunicate embryo
- Antisense blocks muscle formation (=necessary)
- Injected mRNA induces animal pole to form muscle (=sufficient)
- SKN-1 protein localized in C. elegans EMS cell (pharynx derived from EMS)
- skn-1 loss-of-function mutant produces no pharynx (necessary)
- Fucus contains cell wall determinants (handout)
III. Conditional Specification
- A cell’s fate is determined by its environment
A. Cell interactions.
- Contact with neighboring cells influence cell fate e.g. sea urchin
- Animal pole cells alone produce ectoderm only
- Animal pole cells plus micromeres produce cell types normally derived from vegetal pole cells
- Stem Cells—cells that divide to maintain a self-renewing population, and contribute daughters that will differentiate. Can get progressive commitment.
Tuesday, March 1, 2016
Animal Behavior Video- Bozeman Science
Bozeman Science Animal Behavior
Wednesday, February 17, 2016
Tuesday, February 16, 2016
40.3 Thermoregulation Video
Plant Response to Light
Time lapse video of plant response to light
Thursday, February 11, 2016
40.3- Thermoregulation
40.3-
Thermoregulation
·
Regulation of internal temperature
·
Endothermy- warmed by the heat of metabolism ,
internal heat source (humans)
o
Need more food
·
Ecothermy- warmed by environment, external heat source
(reptiles)
o
Need less food because food is scarce
o
Larger fluctuation in body temperature
o
Regulate body temperature by moving to shading
and basking
·
Variation in body temperature
o
Poikilotherms
§
Variation, body temp varies with environment
o
Homeotherms
§
Same, constant body temp
o
Never use warm-blooded or cold- blooded
·
Balancing heat Loss and Gain
o
Figure 40.11
o
Integumentary (Skin)
§
Insulation- fat, hair, feathers
§
Circulatory Adaptation- vasoconstrictions, vasodilation
§
Countercurrent Exchanges
§ Cooling by Evaporation
· Heat or Loss
§ Behavior Response
· Migration, Hibernation
§ Adjusting Metabolic Heat Production
·
Vary heat production to match changing rates of
heat lose
o
Shiver
§
Acclimatization in Thermoney
·
Shedding
·
Changes in Lipids
Friday, January 29, 2016
25.5 Development of Genes Video
How genes are developed video
26.6 Tree of Life Animation
Interactive Animation of the Tree of Life.
Thursday, January 21, 2016
Tuesday, January 19, 2016
Friday, January 15, 2016
24.3 Hybrid Zones Video
Thursday, January 14, 2016
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