hey everyone!!! i hope you all enjoyed you saturday!!! so this week we had monday off woooo :) and then we continued with the two groups. in my group we had already taken notes on the documentary which was pretty much about people studying skeletons and stuff to draw conclusions about evolution and our ancestors. it was pretty interesting but i wasn't a big fan of the music ;) so the thing that my group did second was with the packet. The first part was that we took all the pictures and classified them into groupd, first two groups and then 5. The idea of that was to get our 5 groups to get close to the 5 kingdoms, which are Monera, an example would be single cell bacteria; protista, an example would be an animal cell like a paramecium; fungi, like funguses for example mushrooms; Plantea, which would be plants i guess; and animalia which would be animals with spines i think, like humans!!!

the next thing we had to do was answer the questions on the back and here is what i got for some of them, we also had to research carolus linnaeus and binomial nomenclature:

carolus linnaeus: s swedish naturalist* who proposed the modern system of binomial nominclature.

*naturalist- person who studies something in nature

binomial nomenclature- a system of nomenclature* (they used the word nomenclature in the definition of binomial nomclature?!) in which each spieces is given a unique name that consists of a generic (the genus) and specific (the species) ter.

*nomenclature- sets of names

its like the way they name a species like homo sapien or canis lupis, with the two latin terms. The purpose is for the classification of a species and the smaller groups inside a species. Like giving one name for the entire iguana family and then another different name for marine, land, and desert iguanas.

the sevsn classification groups from largest to smallest are: kingdom, phylum, class, order, family, genus, species.

human classification: kingdom: anamalia, phylum: cordata, class: mammalia, order: primates, family: hominidae, genus: homo, species: homo sapiens


the number of chracteristiccs shared by all member of a classification level changes as you prgress from species to kingdom by getting more and more because species is the most specific classification level and there are lots to be divided between and kingdom is the general and inclusive because there are only five to be divided between.

ok the end.

after that we we got one those memorizer things to help us remember the kingdoms. a numonic device or whatever. yeah i know, the spelling was WAY off...i think it starts with k or something but whatever, here it is

King
Philip (or peter if you cant remember that philip starts with p and not f)
Came
Over
For
Good
Spageti (i cant spell that either!!!)

then we got a super wuick lesson on th efood chain which goes like this:

Sun--->plants--->herbivore animals--->carnivore/omnivore animals--->decomposers--->
nutrients get returned to soil--->back to plants

so therefore all that humans can do is destroy plants and then destroyeverything.

food chain- flow of energy in a group

food web- flow of energy throughout a habititat, population, or community

then another wuick lessno on symbiotic relationships:

parasitic: host gets the negative effect and the organism gets the positive effect

mutualistic: both get a positive effect

commensalistic: host gets no effect at all and the organism gets a positive effect.

there is no situation where the host gets positive and the organism gets negative cuz no oragnism woul dput itself in a negative situation on purpose except a human

soooo that is the end of my blog!

i hope you all enjoy your sunday!!!

see you tomorrow!!!

hug! hug! hug!

HUG!!!

bi bi!!!

this week in science

this week in science was aaaaaaaaall about the different kinds of evolution. we started off by talking about gene flow which is change through migration like how poeple from different places each having certain traits reproduce a new group of people. and we talked about genetic drift which has to do with totally random chance. So a species gets wiped out but the reason it gets wiped out has nothing to do with a certain trait it posseses. Mr. finleys lovely little example was of two kinds of bugs (ill say blue and orange)

X X X X X
X X X X X and then tragicly a tree falls and kills all the orange bugs just by chance

and then it just so happens taht all the blue bugs have an AA blood type so all bugs that they reproduce (so the entire species) will have that blood type.

X X X X X

^all AA blood type

X+X=X all offspring AA blood type

ok.
so then we got into Lamarkian evolution
its the idea that if you try reeeeally hard you can change. its the theory of acquired characteristics. The other part of Lamarkian evolutioon is the theory of use and disuse.
for instance
if i never use my arms and neither does my future husband (hopefully jason mraz ;)) doesnt use his arms then our babies will cute little armless creepers.
obviously this theory does not make sense but thats because when Lamark came up with these theories he did not understand that traits were passed down through genes and that the traits he was talking about changing were not in your genes and therefore could not be passed down to your offspring.

we defined these terms in our notebook:

•selective breeding- a process by which humans select organisms with desired traits and breed them
^(UNnatural selection- humans are choosing rather than nature)

•Mutation- a DNA change

•Genetic drift- a random change occurance
-realted to an event

•Gene flow- a change through migration

•Genetic engineering- where someone goes in and changes someone or sometihng

and here are the original notes we took on genetic drift and gene flow. hopefully blogger will not distort them when i post this!!!

Gene flow

migration

change through migration
-variation
population large vs. small
^increase ^decrease
variation variation



Genetic Drift


Change


random chance


not related to benefits/costs

the destruction of a trait by random chance outside of the species, like natural disasters

nothing to do with benefits nesasrily

we also split the class in half to do either the documentary or learn about carrolus linneus (spelling?) and my group began with the documentary which i didnt get to quite finish yet because i was out friday which also means i dont have anything to say about the quiz yet. i am taking it monday so wish me luck!!!

please enjoy your monday off!!!
tonight is the season premeire of Jon and kate plus 8 which i am so excited to watch!!!

oh yeah--- check this video out its really funny!!! (link)

hug hug hug

bi bi!!!

this week....

OK im very sorry but there isnt much to say this time around because we mostly did the same thing as last week and i went over that in my last post. im pretty sure i went over all the population stuff but i guess ill just say that for sake of my grade on this entry...
all populations are dynamic, meaning they are always changing.
if it is static it is constant.
and then there is that oh so wonderful max capacity limit. This is when the population cannot go above a certain point

the max capacity is the line we drew above the lines representing the predator and prey population in our notes. I would totally put up a picture but unfortunately the pics that my camera takes take FOREVER to load and then they are massice so i cant.

the max capacity exists for these reasons:
1) when the population gets too high resources run low and organisms die off so guess what? its low again.

2) when they are too many of whatever animal in the species it gets overcrowded and disease spreads and they die down again.

3) preadators.....enough said.

this week we also looked at iguanas, i liked them alot better than the cockroaches so i was happy. we wrote down observations about the iguanas and were ablee to draw conclusions about homolegues structures (animals with similair structures) and it was that there several different kinds of iguanas but they are all iguanas because they shared a common ancestor. so maybe there was a regualr green iguana and from that after generations of evolution we got the land, forest, and marine iguanas. But you cant say that the marine iguana was once a green iguana, but it did share a common ancestor with it. it evolved from the green iguana, but it never was a green iguana, it was always a marine iguana. which brings us back to the idea that evolution occurs for a population, not an individual.
soooooo yeah.

we also had a quiz that i will not talk about until we get it back bcause knowing me i will say its easy and then fail so i dont want to jinx myself.

im sorry but i have nothing to talk about.
enjoy your weekend :)

hug hug hug

bi bi!!!

a post about (u guessed it) science!

this week we did 3 simulations, one was with moths, one was with these starburst things and the other was with the gupppies. Then we answered some questions about them on a google doc. Heres the link, (my group was group D) click here ladies and gents. We went over that in class and then we took notes on it.

but those are not the fiirst notes we took this week, we also took notes on adaption which i might have said last time but i dont remember so ill say it anyway :)
here is what i have in my notebook after this week:

Adaption- Changes in the physical structure or behavior of an orhanism that bet suits its environment and develps over time.

Examples of adaption:
•polar bears- white fur to blend in, black skin to absorb warmth
•Skunk- smell
•whale- breathing system
•birds-hollow bones
•penguins- oily surface, fins, webbed toes
•stick bug- camoflouge, looks like stick
•turtle- shell
•chamelion- changes color
•cheetah-speed
OK so there are like millions more but ill just leaveyou with that.

Processes by which we get adaptions:
+adapting
+evolving
+development

Here are notes from the simulation:

•If the environment changes too fast the organism will not be able to adapt
-adaption occurs over time
^natural selection (we will be startiing that unit soon)

•If you have an organism not suited to the environment they will die out

•if they ARE siuted to the environment they are more likley to survive and reprodduce

•change is gradual for a population

----then we had a picture of the relationship between the predators population and the prey's and it looked like a double helix---

•populations are "static" or "dynamic"
-static: constant
-dynamic: always changing
•if population is too high: -limited resources
-disease
•prey population low---> predators die----> prey goes up

OK the end!!! we will have more population notes on monday i think and i believe we will be starting natural selection next which apparantly is really intense.

so

happy mothers day!!! <3

enjoy your weekend

commen on my blog! ;)

Ok well HUG! HUG! HUG!

bi bi!!!