Monday, May 11, 2009
Mon-Day 1
AP Chem- message from Administration this morning: you MUST be at the Sam Springer gym by 7:30 AM tomorrow morning. NO cell phones, backpacks, food, or water is allowed.
You SHOULD bring several pens (blue or black) AND pencils, and TWO calculators with FRESH batteries (EVERY YEAR, at least one student's calculator dies due to dead batteries; don't let that be you).
Here is a link to some lab videos: play the ones on the BURET use, pipette use, solution preparation, and spectrophotometer analysis. One or more of these techniques should be on your AP exam tomorrow.
I'll be in 308 EARLY tomorrow so stop by to get SEE some last minute exam tips.
Sleep well or study hard or both!
Bio 6/7- we saw more examples of environmental ABIOTIC (non-living) factors. We then defined CARRYING CAPACITY of an environment as the maximum number (capacity) of members of a given POPULATION that an environment can "carry"/support. The FINITE or limited quantity of abiotic factors in an environment directly determines the carrying capacity of, for example, polar bears in their environment. The other determinants of carrying capacity are the BIOTIC factors i.e. the other populations that make up the community, their actions, their wastes, etc.
We looked at the types of nutritional relationships that are possible in an ecosystem. AUTOTROPHS merely require inorganic abiotic factors (like CO2 and H2O) and an energy source (sunlight) to make carbohydrates and other important macromolecules; autotrophs make their own nutrition. Plants and algae are the main autotrophs on Earth. HETEROTROPHS depend on other organisms as sources of their nutrition. There are four main categories of heterotrophs: carnivores (meat-eaters), herbivores (plant eaters), omnivores, and saprophytes (live off of dead plants and animals).
We also discussed possible SYMBIOTIC relationships between pairs of populations in a community:
commensalism: +, o (win-draw)
mutualism: +, + (win-win)
parasitism: +, - (win-lose)
We continued working on our finch-beak selection lab.
Bio 8- Bio- we saw more examples of environmental ABIOTIC (non-living) factors. We then defined CARRYING CAPACITY of an environment as the maximum number (capacity) of members of a given POPULATION that an environment can "carry"/support. The FINITE or limited quantity of abiotic factors in an environment directly determines the carrying capacity of, for example, polar bears in their environment. The other determinants of carrying capacity are the BIOTIC factors i.e. the other populations that make up the community, their actions, their wastes, etc.
We looked at the types of nutritional relationships that are possible in an ecosystem. AUTOTROPHS merely require inorganic abiotic factors (like CO2 and H2O) and an energy source (sunlight) to make carbohydrates and other important macromolecules; autotrophs make their own nutrition. Plants and algae are the main autotrophs on Earth. HETEROTROPHS depend on other organisms as sources of their nutrition. There are four main categories of heterotrophs: carnivores (meat-eaters), herbivores (plant eaters), omnivores, and saprophytes (live off of dead plants and animals).
We also discussed possible SYMBIOTIC relationships between pairs of populations in a community:
commensalism: +, o (win-draw)
mutualism: +, + (win-win)
parasitism: +, - (win-lose)
You SHOULD bring several pens (blue or black) AND pencils, and TWO calculators with FRESH batteries (EVERY YEAR, at least one student's calculator dies due to dead batteries; don't let that be you).
Here is a link to some lab videos: play the ones on the BURET use, pipette use, solution preparation, and spectrophotometer analysis. One or more of these techniques should be on your AP exam tomorrow.
I'll be in 308 EARLY tomorrow so stop by to get SEE some last minute exam tips.
Sleep well or study hard or both!
Bio 6/7- we saw more examples of environmental ABIOTIC (non-living) factors. We then defined CARRYING CAPACITY of an environment as the maximum number (capacity) of members of a given POPULATION that an environment can "carry"/support. The FINITE or limited quantity of abiotic factors in an environment directly determines the carrying capacity of, for example, polar bears in their environment. The other determinants of carrying capacity are the BIOTIC factors i.e. the other populations that make up the community, their actions, their wastes, etc.
We looked at the types of nutritional relationships that are possible in an ecosystem. AUTOTROPHS merely require inorganic abiotic factors (like CO2 and H2O) and an energy source (sunlight) to make carbohydrates and other important macromolecules; autotrophs make their own nutrition. Plants and algae are the main autotrophs on Earth. HETEROTROPHS depend on other organisms as sources of their nutrition. There are four main categories of heterotrophs: carnivores (meat-eaters), herbivores (plant eaters), omnivores, and saprophytes (live off of dead plants and animals).
We also discussed possible SYMBIOTIC relationships between pairs of populations in a community:
commensalism: +, o (win-draw)
mutualism: +, + (win-win)
parasitism: +, - (win-lose)
We continued working on our finch-beak selection lab.
Bio 8- Bio- we saw more examples of environmental ABIOTIC (non-living) factors. We then defined CARRYING CAPACITY of an environment as the maximum number (capacity) of members of a given POPULATION that an environment can "carry"/support. The FINITE or limited quantity of abiotic factors in an environment directly determines the carrying capacity of, for example, polar bears in their environment. The other determinants of carrying capacity are the BIOTIC factors i.e. the other populations that make up the community, their actions, their wastes, etc.
We looked at the types of nutritional relationships that are possible in an ecosystem. AUTOTROPHS merely require inorganic abiotic factors (like CO2 and H2O) and an energy source (sunlight) to make carbohydrates and other important macromolecules; autotrophs make their own nutrition. Plants and algae are the main autotrophs on Earth. HETEROTROPHS depend on other organisms as sources of their nutrition. There are four main categories of heterotrophs: carnivores (meat-eaters), herbivores (plant eaters), omnivores, and saprophytes (live off of dead plants and animals).
We also discussed possible SYMBIOTIC relationships between pairs of populations in a community:
commensalism: +, o (win-draw)
mutualism: +, + (win-win)
parasitism: +, - (win-lose)
# posted by C @ 12:24 PM 
