Biology - November 2007

2007-11-26 03:54:28 · 3 answers · asked by john S 1

In the primordial soup, there were apparently molecules such as amino acids and such. How did these organize themselves into the first living organisms?

Love Jack

2007-11-26 01:59:22 · 13 answers · asked by Jack 5

2007-11-26 01:21:34 · 7 answers · asked by Sony 3

Which part of body is it in and how to remove it?

2007-11-26 01:12:02 · 8 answers · asked by Chickoon 4

What are the characteristics of Plasma (state of Matter)

2007-11-26 00:27:33 · 2 answers · asked by Danda 1

Organismal Property seems to be the opposite of emergent properties in biology. Is it so?

2007-11-26 00:13:06 · 1 answers · asked by GreenMeadow 2

2007-11-25 23:31:34 · 11 answers · asked by 13_YR._OLD_GIRL 2

Im no biologist and don't knwo alot about evolution. I read somewhere that its caused by a random mutation in an animal and then that animal has a better chance to survive

But to me it makes more sence that an animal already has the potential to mutate and change their DNA acording to the environment around them and not do it randomly but because of whats happoning aroud it at the time

If its random mutation why are for example black and white people? its obvious that black skin helps Africans survive in the hot country they live in but its not like they would die out if they had moved to a different continent

We all had to start off as one colour rite? i just can't imagine black people going to a cooler climate and then slowly all the dark skined people dying out

It makes alot more sence to me that humans evolve to their environment and not that humans mutate and then the environment chooses who survives, am I completely off here?

2007-11-25 17:20:03 · 29 answers · asked by Anonymous

what is

external fertilization
internal fertilization
amniotic egg
lateral line system

help with one or all would be nice!!

2007-11-25 16:57:35 · 3 answers · asked by zoe_yay 3

2007-11-25 16:50:05 · 2 answers · asked by Anonymous

25 g Reptile and 25 g Mammal are both in a environment with 10 deg C. Which would have a higher rate of Cellular Respiration? Reptiles are cold blooded, and mammals are warm blooded... Please help? This is for AP Biology Lab. :P

2007-11-25 16:11:47 · 6 answers · asked by scatteredth0ughts_ x 3

2007-11-25 16:04:07 · 10 answers · asked by Love Exists? 6

I am doing a project for science fair, and we have set out the bread, but nothing has really happened. The bread has started to harden but thats it.

2007-11-25 15:33:27 · 3 answers · asked by =] 1

2007-11-25 15:32:41 · 8 answers · asked by wallace 2

2007-11-25 15:30:08 · 2 answers · asked by jonas m 1

2007-11-25 15:28:23 · 3 answers · asked by jonas m 1

2007-11-25 15:04:45 · 4 answers · asked by Anonymous

also, how many molecules of carbon dioxide are produced during the fermentation of one molecule of glucose?

and

how many molecules of ethyl alcohol are produced during fermentation of one molecule of glucose?

2007-11-25 14:37:39 · 3 answers · asked by sportsy 1

2007-11-25 14:26:30 · 3 answers · asked by v.j S 1

1. The length of time from the formation of a cell until it divides is...
a. mitosis
b. the cell cycle
c. cytokinesis
d.meiosis
e.interphase

2. A nondividing cell is said to be in...
a.interphase
b. prophase
c. metaphase
d. anaphase
e. telephase

3.Cells produced by mitosis have
a. 1/2 the number of chromosomes as the parent cell
b. double the number of chromosomes as the parent cell
c. the haploid number of chromosomes
d. the diploid number of chromosomes

4. Which of the following is not true of synapsis?
a. sister chromotids become joined at the centromere
b. homologous chromosomes pair up
c. crossing over can occur
d. a tetrad forms
e. genetic recombination can occur

2007-11-25 14:15:57 · 3 answers · asked by Brittany B 2

Here's part of what she wanted:

"Types of testing/procedures for pre-pregnancy"

Well I'm doing this project related to genetic disorders, so I guess she meant testing/procedures for genetic disorders.

But I'm confused now. How can you test whether or not a baby has a genetic disorder or not if the baby isn't even there yet? Am I suppose to test whether or the parents or carriers or something similar?

Please help! I'm confused!

Merry Christmas and thanks!

2007-11-25 14:15:02 · 12 answers · asked by UnknownD 6

Why are some aquatic animals, especially mammals such as whales, extremely large compared with terrestrial animals?

2007-11-25 14:05:34 · 8 answers · asked by livelaughlove 2

I have been trying and trying to figure it out but i Can't come up with a reason. any help....10 POINTS!!!!

2007-11-25 13:48:45 · 7 answers · asked by Zero_Lyfe 5

***please know what you're talking about i dont want simplified answers like "well it allows you to breath." no i want like an actual smart answer

2007-11-25 13:47:31 · 1 answers · asked by brian k 1

Bio.
Genetics.
Long *** report.
<3

2007-11-25 13:46:36 · 2 answers · asked by Anonymous

2007-11-25 13:38:58 · 8 answers · asked by nomorecapri 5

2007-11-25 13:23:09 · 5 answers · asked by Anonymous

Small segments of DNA which can "jump" from one region of

DNA to another are called ___________________________.

2007-11-25 13:19:42 · 2 answers · asked by David 2

WHAT ARE THEY? ARE THEY DIFFERENT FROM PLANTS?
ARE DETERGENTS MICROORGANISMS?

2007-11-25 12:54:36 · 10 answers · asked by o. O! 1

2007-11-25 12:41:43 · 1 answers · asked by Anonymous