CSSA- Biology

[Chahoud]

Man I found this exam hard haha yeah I study for it :/
I remember look up half the time and the guys infornt of my either asleep or drawing something hahaha
I have sor 2 tomorrow :/ haha great..

[clry]

how human activities of controlling and preventing diseases has affected genetic diversity of species.

wrote 2 pages but i will still get 3/7. im just an idiot, so ye

Pretty much. I talked about antibiotic resistance and transgenic species, and blabbed on in an evaluate-like manner.. Should get a 5/7.

[imZerroo]

Pretty much. I talked about antibiotic resistance and transgenic species, and blabbed on in an evaluate-like manner.. Should get a 5/7.

i didn't talk about transgenic species, i talked about antibiotics, ddt and cloning. the last two i talked about very shortly. was this the assess q. or the evaluate q. though?

[chels777]

i found the exam decent i finished it within an hour and a half but then went back over it for the 7 marker included, antibiotic resistance, transgenic species, vaccination how it can both increase and decrease diversity eliminates certain strains and causes evolution of new strains and does any one remember what they put for the last multiple choice?

[Blushii]

what was the last mc about again?

[chels777]

it was the graph about whooping cough i couldnt decide between b and c

[Joy_2575]

can anyone remember what the 5 markers were?
because I only remember 2. either I don't remember or left out questions or my school modified it!

Did any of you guys have to do genetic crosses and pedigree charts, or did my school just add them in?

[Blushii]

i did b i think- it wont be effective in the future o.o"
what was the answer for c?

[chels777]

in mine there was no pedigree charts and i think i can only remember 2 five markers as well

[imZerroo]

can anyone remember what the 5 markers were?
because I only remember 2. either I don't remember or left out questions or my school modified it!

Did any of you guys have to do genetic crosses and pedigree charts, or did my school just add them in?

we didnt have them. i wanted a pedigree chart coz i understand very clearly, we didnt get one.

[chels777]

that it was lowest in 1987 but then on the graph it was lowest from like 1985-1990 so thats probably wrong not sure though

[Blushii]

For the CSSA i think the 5 marker questions were the Glofish and the Enzyme X tomato experiment...cant remember others

[Joy_2575]

we didnt have them. i wanted a pedigree chart coz i understand very clearly, we didnt get one.

wow, my school must really hate us then, they put this really difficult pedigree chart in and that took up like 10 minutes. so I'm assuming you guys didn't get the sex linked inheritance question either then. I felt my paper was full of BOL topic and not much of Maintaining a balance... maybe this is because we never ended up finishing the 3rd topic..

[Joy_2575]

For the CSSA i think the 5 marker questions were the Glofish and the Enzyme X tomato experiment...cant remember others

wait what was the Enzyme X tomato experiment question?
My experiment question was about the performing a first hand investigation to model Pasteur's experiment.. my school has changed a lot of the paper

[mark H]

what was the hardest short answer in your opinion?

[Joy_2575]

what was the hardest short answer in your opinion?

the glofish transgenic question... what did u write for that?

[chels777]

i thought they were all fair you just had to think before you started writing

[Blushii]

the tomato experiment was about designing an experiment to test the effect of enzyme X on hydrogen peroxide in tomatoes at different temperatures i think. how did people design their experiment?

[chels777]

the tomato experiment was about designing an experiment to test the effect of enzyme X on hydrogen peroxide in tomatoes at different temperatures i think. how did people design their experiment?

i used water baths ranging from 10-60 degrees with five testubes in each 4 with enzyme and peroxide other with just peroxide and marked the starting line then left for 20 mins and marked height of bubbles

[Blushii]

Ohh same here! I was so close to using actual tomatoes LOL. My temp range was from -10 to 40 in 5 test tubes, i left it for 10 minutes and my measuring method was to "measure the amount of water since the more water=the more hydrogen peroxide broken down" ..i totally disregarded the bubbles. ><

What did you guys do for the wikipedia question abt endotherms?

[mark H]

i used water baths ranging from 10-60 degrees with five testubes in each 4 with enzyme and peroxide other with just peroxide and marked the starting line then left for 20 mins and marked height of bubbles

Pretty much same for me except i said from 10-50 degrees with their being 3 test tubes at each 5 degree increment.

[chels777]

i said it was not reliable but relevant

[mark H]

What did you guys do for the wikipedia question abt endotherms?

I don't remember that wiki question. What was it about?

[Blushii]

it was about sources of info.I did not relevent and not reliable...my reasoning: because it clearly stated that endotherms were able to maintain their body temperature despite the environment, yet the wiki quote was about animals in general and it was talking about the ambient temperature affecting body temperature...so i thought they were talking abt ectotherms lol. aww mc was hard for me!

[chels777]

it was about sources of info.I did not relevent and not reliable...my reasoning: because it clearly stated that endotherms were able to maintain their body temperature despite the environment, yet the wiki quote was about animals in general and it was talking about the ambient temperature affecting body temperature...so i thought they were talking abt ectotherms lol. aww mc was hard for me!

i suck at multiple choice because i always over analyse things i originally had not relevant or reliable but then changed it