biology questions help

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kyle_brooks94
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biology questions help

Post by kyle_brooks94 » Sat Jan 20, 2007 4:03 pm

hello..

i'm doing a 2nd level biology course in high school and i've got an exam in a few days.. i've been having trouble with a couple questions and was wondering if someone here can give me a little aid..

1. compare and contrast matter and energy transformations associated with the processes of photosynthesis and respiration

2. investigate the relationship between membrane surface area and cell size and summarize findings

3. describe the effect of osmosis on celss with and without cell walls

4. describe how organelles manage various cell processes such as ingestion, digestion, transportation and excretion.

if someone can help me out on a few of these i'd greatly appreciate it

thanks.
kyle

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mith
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Post by mith » Sat Jan 20, 2007 4:22 pm

1. Might want to look at the formulas for the respective reactions...there's a really cool correlation if you flip it.

2. Why can't cells get too big? Been discussed before.

3. etc....
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micching1204
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Post by micching1204 » Fri Jan 26, 2007 10:06 am

3.describe the effect of osmosis on celss with and without cell walls

tis one u may check out for the effect of the isotonic, hypotonic, hypertonic solution on the cells...


4. describe how organelles manage various cell processes such as ingestion, digestion, transportation and excretion.

tru diffusion???? haha~ i m not so sure~ juz guessing for it~

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