Biology - December 2007

i have two questions....

(1) What makes one protein different from another protein in structure and shape?

(2)Are these molecules (above question) the result of anabolic or catabolic processes? Explain.

i have been on these two problems for TOO long.
please help me!

2007-12-03 04:41:43 · 3 answers · asked by sand_illusions 4

what effect would the change in the LDL cholestrol as a result of eating the sterol-enriched spreads be expected to have on the chances of developing coronary heart disease

suggest three vitamins whose absorption might be affected by plant sterols.

What is meant by a double bind,placebo-controlled study.

2007-12-03 04:08:49 · 2 answers · asked by Anonymous

apsal aku menguap,kalo org laen menguap gak?

2007-12-03 03:40:54 · 10 answers · asked by shazlee_shah 1

Growing up, I was always hearing people asking others if they had worms if they had a healthy appetite. Is that an old wive's tale or something? If not, why is the person eating more? To replace nutrients taken by the worms from the intestines?

2007-12-03 03:16:54 · 7 answers · asked by cherish405 2

A girl I know who is Christian likes to point out "miraculous" things like science doesn't know how cats purr and that with as much as we know about biology, that initial spark when the sperm enters the egg that causes life to start is completely unknown and unknowable by science.

Well I looked around and found the cat purring answer for the most part, but I am curious as to the answer of what exactly happens to "spark" life.

She also says that when you die there's a surge in electical activity right before death and she says it's the soul leaving but science can't figure that out either. Any info on that would be appreciated as well.

Links also welcome.

2007-12-02 22:23:44 · 6 answers · asked by Tony AM 5

2007-12-02 22:11:44 · 2 answers · asked by sagar 1

2007-12-02 22:01:18 · 5 answers · asked by Anonymous

Every time they show a skull of a 'hominid' or transitional form of man, I see...a monkey skull. They are distinctly different.

The Fossil record destroys Evolution, but the evolutionary faithful keep on touting each find as proof of evolution. But proof to whom, those who wish to believe, or those who still question everything and are actually scientific.

If you have no transitional forms between Ape & Man, then how do you come to conclusion that Chromosome #2 in Man is a fussion of Ape Chromosomes taking us from 48 to 46?

The answer - assumption. You cannot prove it, you can only and I quote, "think it may have happened".

2007-12-02 19:41:16 · 22 answers · asked by Tim L 2

what is the whole significance of circumsition? what is being cut exactly? is it the prepuce part of the penis gland? Its amazing on how doctors can measure this skin at such an early age like newborn..i mean..how far do they cut?

2007-12-02 18:44:28 · 7 answers · asked by ALLELI 2

what's the temperature ranges is considered the danger zone for food borne microbes to flourish?

2007-12-02 17:57:32 · 0 answers · asked by kk^Q^ 7

2007-12-02 17:19:41 · 1 answers · asked by sci_voir 1

2007-12-02 17:17:46 · 5 answers · asked by Golu S 1

Could we function without DNA?

I think that our genetic make-up would be completely out of wack. What would life be like? I think that is impossible but I'm not completely sure. Voice your opinion, thanks.

2007-12-02 17:15:49 · 4 answers · asked by Troy B 2

thnx for answering

2007-12-02 17:02:41 · 2 answers · asked by Anonymous

thnx for anyone who answered

2007-12-02 17:02:00 · 2 answers · asked by Anonymous

science hw
lol
thnx for answering

2007-12-02 16:58:48 · 2 answers · asked by Anonymous

science hw
thnx for answering

2007-12-02 16:55:10 · 5 answers · asked by Anonymous

"Speciation may occur rapidly and is caused by a few genetic genes." this statement is best associated with

a. plyletic speciation
b. gradualism
c. punctuated equilibrium
d. allopatric speciation
e. polyploidy

2007-12-02 16:43:50 · 1 answers · asked by angelina 2

science hw

2007-12-02 16:33:57 · 14 answers · asked by Anonymous

2007-12-02 16:24:04 · 1 answers · asked by jonas m 1

2007-12-02 15:59:08 · 1 answers · asked by josefina 1

2007-12-02 15:47:12 · 2 answers · asked by DJ BIGMAC 1

Sickle-cell anemia is governed by autosomal recessive inheritance. What is the likelihood that a person who has two affected parents will have the disorder?

a) 25%
b) 100% (certain)
c) 50%
d) 0% (impossible)

2007-12-02 14:50:34 · 5 answers · asked by daitheflu99 2

6. A biologist exposed a mosquito population to a moderate concetration of DDT, a powerful pesticide; approximately 2% of these mosquitos survived. These surving mosquitos were allowed to interdreed ane produce offspring. When the offspring were exposed to DDT, approximately 94% survived. Which of the following is the best conclusion you could draw from these observations alone?
a. DDT resistance is a benefical trait for mosquitos in the natural environment.
b. Exposure to DDT indused a mutation to DDT resistance which was inherited by the offspring.
c. A mutation for DDT resistance is a recessive gene and is expressed in homozygous individuals.
d. Exposure to DDT allows only those mosquitos to survive which already have genetic information for DDT resistance.
e. b&d are equally likely.

2007-12-02 14:45:27 · 4 answers · asked by Anonymous

If a shipwrecked crew drinks sea water, they will probably die. Why? (I need the scientific answer)

2007-12-02 14:41:16 · 1 answers · asked by Anonymous

2007-12-02 14:14:10 · 1 answers · asked by victorsinferno45 1

i am doing a science project and i's due tomorrow i need anwsers now or i'm screwed

2007-12-02 13:43:50 · 2 answers · asked by ayana 1

3. Sexual selection may lead to

a. sexual dimorphism
b. disruptive selection
c. general similarities between males and females of the species.
d. speciation.
e. none of the above

2007-12-02 13:34:26 · 1 answers · asked by Anonymous

2007-12-02 13:22:17 · 3 answers · asked by Jah 1

2007-12-02 13:16:29 · 2 answers · asked by enflip23 1