Biology - November 2006

2006-11-15 18:34:38 · 18 answers · asked by CHUCK in KY 1

Species on this planet have evolved with immune systems to fight of all the diseases so individuals can live long enough to procreate. However, as far as i know all of the species have evolved to actually die so when the cell devide, the telomerase get short so eventually species die so why have evolution selected against immortality if its so advantageous. Or, is evolution INCOMPLETE?

2006-11-15 17:35:52 · 8 answers · asked by savio 4

i studied a bit about bacteriocins but did not understand what they are. i need a detail about bacteriocin and which bacteria produce them and against which species these are active? if possibe send me or direct me towards detail on any web site.

2006-11-15 17:33:41 · 1 answers · asked by sayeen 1

Why do Mitochondria and chloroplasts contain DNA? What evidence is there that these organelles have a seperate origin from thier host eukaryotic cell?

2006-11-15 17:15:01 · 4 answers · asked by Solari 1

2006-11-15 16:44:16 · 3 answers · asked by votonyb@sbcglobal.net 1

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

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

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

please help i have a essay due tommarow

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

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

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

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

I am studying midterms, few questions are bugging me! ahk!

sucha as
1.what type of cells undergo mitosis and meiosis? and how many cells undergo?
2.when do chromosomes condense?
3.when does the nuclear membrane disappear and reappear?
4.what's the result of mitosis and meiosis regarding the number of chromosomes?
5.what happens before intherphase? like sub-stage interphase.

I am keep studying with my txtbook. If i get some answers, i will post some. Thank you

2006-11-15 15:34:01 · 3 answers · asked by javalearner 1

2006-11-15 15:33:07 · 3 answers · asked by HELP!!!! 1

2006-11-15 15:04:21 · 7 answers · asked by HELP!!!! 1

2006-11-15 14:46:37 · 7 answers · asked by plz help me 1

Just wondering how long marijuana shows up on a hair follicle test, and is there any ways to speed up the time?

2006-11-15 14:30:53 · 4 answers · asked by Anonymous

Hey people! I really need your guys's help (I know, a made up phrase) and I hope you guys have answers....and possibly links as to where you found this out (?).

2006-11-15 14:25:05 · 3 answers · asked by Anonymous

A human skin cell has 46 chromosomes. After Mitosis, how many chromosomes will the new skin cell have? ??
thanks

2006-11-15 13:49:24 · 14 answers · asked by hehe 1

2006-11-15 13:42:05 · 3 answers · asked by Tiff 4 Tatt! 2

If a species normally has 52 chromosomes, the cells it produces by Meiosis will each have ____ chromosomes.

104
52
26
13
thanks

2006-11-15 13:41:46 · 7 answers · asked by hehe 1

2006-11-15 13:41:15 · 8 answers · asked by love88 2

2006-11-15 13:38:27 · 3 answers · asked by love88 2

2006-11-15 13:34:09 · 2 answers · asked by saturday o 1

2006-11-15 13:30:12 · 2 answers · asked by saturday o 1

a. homozygous dominant female
b. heterozygous female
c. homozygous recessive female
d. homozygous male
e. heterozygous male

2006-11-15 13:03:17 · 5 answers · asked by Anonymous

a. found on the Y chromosome
b. passed on to the daughters from their fathers
c. passed on to the sons from their mothers
d. expressed more commonly among females becuase they have two sex chromosomes
e. may be carried but not expressed by males

2006-11-15 13:01:52 · 5 answers · asked by Anonymous

2006-11-15 12:58:02 · 8 answers · asked by behappy 1

a. her mother
b. her father
c. both parents
d. neither parent

i think its d becuase the genotypes are X and X5.
is this correct? if not, what is the right answer?

2006-11-15 12:52:48 · 10 answers · asked by Anonymous

The standard definition is a body part that was once useful in a species' ancestral past but has now become virtually useless. Those being, the appendix, the tonsils and the tailbone as far as the body structure is concerned. Evolutionists have used the vestigian-organ argument for decades to show the supposed evolution of animal and human bodies. I hink Darwin had written some work on this subject. What is your opinion on this subject? There were 100 useless organs in the early 20th century & now "0" in 2006. What other organs could there be that was considered useless to us?

2006-11-15 12:40:41 · 6 answers · asked by ZORRO 3