Science & Mathematics - 15 November 2006

What are the main ingrediants that make an apple turn brown when exposed to oxygen? I am doing a science project that requires this information, so if you have anything to me, please
e-mail me. It could help me a lot.

Thanx
Bernie

2006-11-15 16:26:14 · 2 answers · asked by travalincanadiangirl 1 in Botany

2006-11-15 16:26:11 · 1 answers · asked by Rawr 2 in Mathematics

A number of long, thin sticks are lying in a pile at odd angles such that the sticks cross each other.

a) Relate the maximum number of intersection points of n sticks to entries

in Pascal’s triangle.

b) What is the maximum number of intersection points with six overlapping sticks?

2006-11-15 16:24:00 · 3 answers · asked by ravi l 1 in Mathematics

Heterozygosity in sickle-cell anemia provides resistence against malaria. If 9% of an African population is born with a severe form of sickle-cell anemia (recessive), what percentage of the more resistant allele is present in that population?

2006-11-15 16:21:39 · 3 answers · asked by jenna 1 in Biology

How many ATP molecules does it take before a glucose molecule can be broken down to release energy?

2006-11-15 16:16:19 · 3 answers · asked by jenna 1 in Biology

I have to do a project for science and I really need to knwo everything that the cytoskeleton does... Please Help!

2006-11-15 16:15:17 · 8 answers · asked by Sean B 2 in Botany

2006-11-15 16:14:53 · 2 answers · asked by Host_AVATAR 1 in Earth Sciences & Geology

i know it's interphase but wat phase of interphase? is it the g1 phase? s phase? g2 phase?

2006-11-15 16:14:39 · 3 answers · asked by Lili 2 in Biology

please help i have a essay due tommarow

2006-11-15 16:14:14 · 3 answers · asked by teddy bear 2 in Biology

2006-11-15 16:05:21 · 2 answers · asked by Anonymous in Chemistry

2006-11-15 16:03:51 · 12 answers · asked by Anonymous in Botany

2006-11-15 16:01:40 · 8 answers · asked by big daddy woo wooo 1 in Mathematics

I doubt there are any mathematicians out there, but what is the probability of a monkey typing a 100 page science fiction novel on the first try if you allowed it to bang on a typewriter? Assume that there are 2000 characters per page, 46 keys on a keyboard (one for each letter, number and punctuation mark) and for simplicity's sake that all keys are equally likely. There are no shift bars or capital letters on this keyboard.

Good luck!

This is not my homework. I just want to know how to calculate this sort of thing, and am curious about the answer.

2006-11-15 16:00:38 · 6 answers · asked by Wise1 3 in Mathematics

How close is the southernmost point of Alaska to the continental United States?

2006-11-15 15:58:34 · 9 answers · asked by presidentrichardnixon 3 in Geography

If a membrane is semi-permeable to lets say K+, and K+ is dissolved in 2 separate sides of this semi permeable membrane, why does K+ diffuse from higher concentration to lower concentration? What drives the movement?

2006-11-15 15:57:56 · 4 answers · asked by Brian B 4 in Biology

2006-11-15 15:56:16 · 4 answers · asked by robert w 1 in Geography

2006-11-15 15:55:32 · 7 answers · asked by Lili 2 in Biology

, and
to a rotation axis at O, by two thin rods, each with length d= 5.6 cm and
mass M= 1.2 kg. The combination rotates around the rotation axis with
angular speed= 0.30 rad/s. Measured about O, what are the combination's: (A) rotational inertia
(B) kinetic energy

2006-11-15 15:55:07 · 1 answers · asked by gods1princesschanel 1 in Physics

If going to the next closest galaxy will take us millions of years when going in speed of light, how do we know how far they are without actually living the millions of years to find out the answer? What's the method used? thanks!

2006-11-15 15:55:07 · 8 answers · asked by rahmis4ri 1 in Astronomy & Space

L1+ L2, with L1= 20 cm and L2= 80 cm. The rod is held
horizontally on the fulcrum and then released. What are the magnitudes of
the initial accelerations of (a) particle 1 and (b) particle 2?

2006-11-15 15:52:57 · 1 answers · asked by gods1princesschanel 1 in Physics

can cell shape influence the rate of difusion of nutrients and waste?how will a thin flat cell compare to a cube shaped cell in terms of diffusion rate?why?

2006-11-15 15:50:04 · 2 answers · asked by HELP!!!! 1 in Biology

2006-11-15 15:47:21 · 10 answers · asked by waqas hero of chep 1 in Physics

A water tower is up in the air. How do they keep the water from freezing in the winter? I'm guessing there is some sort of heater up there....

2006-11-15 15:47:21 · 9 answers · asked by kansas_city_phunk 1 in Engineering

2006-11-15 15:47:00 · 3 answers · asked by Anonymous in Physics

2006-11-15 15:46:45 · 4 answers · asked by just curious 1 in Other - Science

2006-11-15 15:46:06 · 5 answers · asked by iheartcilantro 1 in Mathematics

Hi everyone, I would apperciate some help, I want to learn how to do the process in getting the answer. So anyone please help me. ^^ I just can't understand the problem. :)

2006-11-15 15:44:43 · 9 answers · asked by Lizzie 5 in Mathematics

I would appreciate any helpful input on this physics problem. I am really confused on this one. Thanks for any help :)

A high-speed lifting mechanism suppports a 815 kg object with a steel cable 28.0 m long and 4.00 cm2 in cross-sectional area.

a) Determine the elongation of the cable (in mm).

b) By what additional amount does the cable increase in length if the object is accelerated upward at a rate of 2.7 m/s2 (in mm)?

c) What is the greatest mass that can be accelerated upward at 2.7 m/s2 if the stress in the cable is not to exceed the elastic limit of the cable, 2.2 x 10 to the 8th power Pa (in kg)?

2006-11-15 15:43:50 · 2 answers · asked by Anonymous in Physics

2006-11-15 15:41:13 · 9 answers · asked by saima y 1 in Mathematics

2006-11-15 15:35:14 · 3 answers · asked by jonathanne c 1 in Engineering