Biology - December 2007

2007-12-17 22:36:06 · 4 answers · asked by shruti_jakhar 1

I am 27 and have a 3 year old. SO far my skin is good and i dont have any wrinkles etc but a friend of my age has started developing fine lines. I understand that some skin types are different as well as aging process is different from individual to individual. But my question is ON AVERAGE... when does the aging processs begins? and what to look for? I take good care of my skin :o)...so hopefully i'd be able to slow it a little. hehe

2007-12-17 18:34:40 · 10 answers · asked by Anonymous

What is the purpose for each of the following reagents:
a) dishwashing detergent (detergents act as surfactants)
b) meat tenderizer (it contains a protease that affects chromosome structure)
c) freezing and crushing the strawberries (these steps are required to break a structure found only in plant cells; therefore, not required to extract DNA from animal cells)

Explain the function of DNAses in cells?

2007-12-17 18:22:11 · 2 answers · asked by KN 1

using what kind of matrix, how many cell to inject, Thanks so much!

2007-12-17 17:49:05 · 3 answers · asked by postdoc2007 1

slowed natural selection with technology by interfering with the gain of that important information in our genome?

for instance; someone with bad eyesight is now as equally likely to pass on those genes because he/she has adapted with glasses

2007-12-17 17:13:09 · 7 answers · asked by Sam 4

How can you measure bacteria?

2007-12-17 16:59:43 · 8 answers · asked by :) 2

Pig dissections.

2007-12-17 16:48:35 · 2 answers · asked by Emily C 1

would i be able to get yeast from the grocery store and grow them in petri dishes at home? how?

2007-12-17 16:42:25 · 5 answers · asked by Joyous 2

Pig dissection.

2007-12-17 16:38:28 · 3 answers · asked by Emily C 1

Hello. I am trying to make a batch of homemade cancer cells, and (god forbid) I'm fresh out of pregnant women. All I have is a couple of petri dishes, some AGAR, a scalpel, human flesh (for culture. I'm not a flesh easting zombie), and my (abnormally huge) brain(JK). I need to know: Is it possible to deform, mutate, or otherwise mess with the stuff that times cell replication and the cell cycle? In other words, are there other ways to transform normal cells into cancer cells without means of in-vitro fertilization and all that high-tech stuff that costs a million dollars? EX. I heard (rumors) that sunlight causes cancer if the radiation is extreme. So could my cells do a little sunbathing and undergo cancerous division?

Thanks. E-mail me if you have any other questions. I would like the price range to be between $0-50, if at all possible.

2007-12-17 16:15:55 · 2 answers · asked by Anonymous

Identify the components of carbohydrates and proteins??

2007-12-17 15:58:18 · 4 answers · asked by Anonymous

how does your sense of smell work? is it when small particles of something dissolve in a part of your nose?

2007-12-17 15:54:13 · 15 answers · asked by ? 2

2007-12-17 15:49:11 · 2 answers · asked by Anonymous

This is for fetal pig dissections.

2007-12-17 15:48:54 · 5 answers · asked by Emily C 1

2007-12-17 15:45:48 · 6 answers · asked by mommalorrie@att.net 1

This has to do with heredity in plants. I need a simple definition for this. Thank you!

2007-12-17 15:37:45 · 2 answers · asked by Nora 1

a tall pea plant is crossed with a recessive dwarf pea plant. what will the phenotypic and genotypic ratio of offspring be

a. if the tall plant was TT?
b. if the tall plant was Tt?

2007-12-17 15:29:38 · 2 answers · asked by Sarah M 2

i think its one of these

a. stomach
b. large intestine
c. duodenum of the small intestine
d. liver
e. pancreas

thanks again

2007-12-17 15:14:16 · 1 answers · asked by Rodrigo l 1

2007-12-17 15:13:00 · 0 answers · asked by Armando M 1

My teacher added an extra question to my frog disection lab (lucky us..) but i've honestly looked everywhere and can't find an answer to the following question:

"Compare the relative lengths of the stomach, small intestine, and large intestine in a frog to that of a human. Explain any differences."

Any help will be appreciated =)

2007-12-17 15:01:49 · 2 answers · asked by Anonymous

2007-12-17 14:56:26 · 3 answers · asked by Anonymous

i need help please:D

2007-12-17 14:56:05 · 7 answers · asked by Anonymous

2007-12-17 14:53:12 · 6 answers · asked by Jackie 2

2007-12-17 14:50:43 · 2 answers · asked by mahavir s 1

ago's Duke University reported from tests that monkies who remain monkies and didn't evolve into humans are smarter at mental addition than today's college students.)

2007-12-17 14:48:29 · 3 answers · asked by Anonymous

2007-12-17 14:42:58 · 6 answers · asked by Lola Bunny 1

it's for a biology lab... we put pieces of cabbage into a sealed container of salt water, observerd pH levels, cabbage cells, and bacteria over a span of a week...

other questions include:
-why does the cabbage shirnk and lose water?
-why do you want to keep the cabbage covered by liquid at all times?
-why is Lactobacilus important in making sauerkraut?
-why do we use salt to make saukraut?


thank you so much if you can help
if you have no idea, well... i guess we have a lot in common then :P

2007-12-17 14:42:53 · 1 answers · asked by Anonymous

any ideas on a science experiment?

how to do it? (highschool level)

2007-12-17 14:38:52 · 1 answers · asked by Anonymous

I have a lab due soon and im stuck on my last question. Any help will be appreciated.

-Describe the structure of the lining of the frog's stomach. How does this relate to the stomach's funchtion in digestion?

2007-12-17 14:36:50 · 2 answers · asked by Anonymous

help me pretty please =)

2007-12-17 14:26:35 · 2 answers · asked by Anonymous