Biology - June 2007

2007-06-14 00:26:34 · 1 answers · asked by daisy 2

2007-06-13 20:47:51 · 9 answers · asked by tusaver 1

I need to have evidence that supports the idea that the earth is really, really old. I mean like 4 billion years old. The only thing I can think of is carbon dating and fossils. Got any ideas?

2007-06-13 20:25:25 · 10 answers · asked by nattym04 2

which is the strongest muscle in males and females?

2007-06-13 20:22:41 · 13 answers · asked by ravi 2

yeah for example this technology would allow a marred couple wanting a baby, for instance, to choose the hair color, skin color, factions etc... of their child. so if the mother wanted the baby girl to be miss universe she would just have to choose the most atractive features to add them to the fetus or sperm cells DNA. and of course this is under the cloning topic i think. but i need the particular name to this technology.

2007-06-13 17:29:45 · 3 answers · asked by sangre azul 1

1.How are phospholipid molecules arranged within the lipid bilayer of the plasma membrane?
a.The hydrophobic lipid tails and the hydrophilic polar phosphate heads are arranged randomly.
b. The hydrophobic lipid tails are oriented toward the ECF and the ICF.
c. The hydrophobic phosphate heads are oriented toward the ECF and the ICF.
d. The hydrophilic lipid tails are oriented toward the ECF and the ICF.
e. The hydrophilic phosphate heads are oriented toward the ECF and the ICF.

2.The reason the lipid bilayer of a plasma membrane is asymmetric is that:
a.glycolipids appear only on the extracellular side of the membrane.
b. the phospholipids are randomly arranged.
c. cholesterol molecules line up on the inner surface of the membrane.
d. the phospholipids in the outer layer are larger molecules than those of the inner layer.
e. glycolipids make up the outer layer, while phospholipids make up the inner layer.

2007-06-13 17:09:13 · 5 answers · asked by Anonymous

2007-06-13 16:26:20 · 4 answers · asked by Marguerite V. 2

And how long does it take for the rest of the cells in his body to die?

2007-06-13 16:19:09 · 3 answers · asked by Anonymous

if the purpose of sexual pleasure is to make sure the human species procreates. then how come the guys that like sex the most dont like kids & ditch thier woman and just want the sex but not the kids?

2007-06-13 16:07:52 · 4 answers · asked by Anonymous

okie..this is the exact question..plz help me..

PLace your index finger on the trachea of the fetal pig and push downward. Describe what happens?

plz..plz...help me...thank u

2007-06-13 15:37:56 · 2 answers · asked by soni 3

As far as I know every species has stayed the same species as far as any of us have observed. If the theory of evolution is science then we have to be able to test and observe it. If we have observed macroevolution happening in real life then where?

2007-06-13 15:32:15 · 12 answers · asked by Anonymous

Inheritance of skin color and height in humans are best explained by:
A. polygenic inheritance.
B. multiple alleles.
C. epistasis.
D. incomplete dominance.

A colorblind mother cannot produce a:
A. normal son.
B. colorblind daughter.
C. carrier daughter.
D. both B and C.

What is the percentage of colorblind daughters expected from a woman with normal color vision (\who is not a carrier) and a color blind man?
A. 100%.
B. 75%.
C. 50%.
D. 0%.

Height of tobacco plants is an example of polygenic inheritance. The offspring of a very tall plant and a very short plant will be:
A. all tall.
B. all short.
C. all of medium height.
D. a bell-shaped curve of various heights.

The F2 generation of the above cross will be:
A. all tall.
B. all short.
C. all of medium height.
D. a bell-shaped curve of various heights.

2007-06-13 14:44:16 · 5 answers · asked by Anonymous

2007-06-13 12:52:03 · 7 answers · asked by ♪♫♪ La Dee Da ♪♫♪♫♪♫ 2

what are some?
it's llike why do we have seasons
or why is the sky blue

something not that difficult
but that people regulary confuse.
it also needs a scientific explaination.

ex. why does the wind blow?
because of the different pressures.

2007-06-13 12:10:10 · 11 answers · asked by Juni<3 2

People keep telling me that irreducible complexity is absolute proof we did not evolve. I don't think this is true. They often use the example of the flagellum motor and the mouse trap. If anyone is familiar with these concepts and can give me some information as to why it does not disprove evolution, it would be greatly appreciated! thank you!

2007-06-13 11:11:22 · 9 answers · asked by mandy 3

hey guys im back to bug you all with one more question that has seemed to of stumped me yet again.
Here it is

"Natural selection is an editing mechanism rather than an inventive process"

What the heck does that mean? Now i do know what natural selection is but i dont get the other parts to the quote.

Heres part 2 of my question

Is evolution through adaptation the only possible path for a species? In other words, are all species “guaranteed” to evolve?

Any help? Last question for today i promise! Thanks!

2007-06-13 10:56:24 · 6 answers · asked by Anonymous

2007-06-13 10:41:11 · 3 answers · asked by Lyndsey J 1

2007-06-13 07:18:31 · 11 answers · asked by alx82092 2

Would it be a good thing or bad? Do you think we would find out much more or just end up either being killed or killing them off?

2007-06-13 05:41:58 · 10 answers · asked by Pepperz 2

2007-06-13 05:15:33 · 6 answers · asked by FENIL P 1

2007-06-13 04:08:41 · 6 answers · asked by Anonymous

Air contains about 21% oxygen. Ignoring increased levels of carbondioxide; At what level would we lose awareness and what is the minimum we could remain alive? Is there an upper limit ?

2007-06-13 02:03:26 · 8 answers · asked by Anonymous

Let me first say that I a Christian and believe in creation. However, I pose a serious question.

If evolution is true, then at one point a pair of animals with "exact" DNA had to be in the same place at the same time and be able to procreate. Right? I say exact because humans share 98% or some similar percentage with primates and together we cannot procreate.

Therefore, this is what bothers me about evolution and I would like it explained to me. At one point, organisms changed from cell division to sexual reproduction. Two of these organisms had to be in the same place on earth, as well as at an age of reproduction, and able to procreate.
Have I missed the point of evolution? I am asking for open and educated debate. We could quote Genesis, but lets not. Use logic to discuss this, otherwise it might go down hill fast.
Please respond.

2007-06-13 01:40:21 · 11 answers · asked by Alan 2

Most of the answers on my previous questions simply stated the inferiority of my imagination, the ridiculousness of my need to be a mental follower and the aggravating assumption that i should convert to evolutionism because it's smarter than believing in a higher power that created all things. What I suggested by not using timelines, is this: i don't discredit timelines...i simply believe that different life forms could have been CREATED at different times during the history of life and that the time period that they stomped this earth doesn't discredit creation or prove evolution. It’s true that life-forms are constantly evolving, in a sense, but it is also logical that they were CREATED inferior to modern life-forms. i also believe that instead of previous creations being considered "first drafts", they were simply "earlier creations".

2007-06-13 01:38:39 · 8 answers · asked by smartypants 2

all enviromental factors being equal

2007-06-13 01:13:56 · 24 answers · asked by zoomraker 1

2007-06-13 00:10:26 · 7 answers · asked by Vin 1

for those people who like biology and know what they are doing......yes this is for my homework stop bitching about it ok......man!

yeah ineed fast help. please~

2007-06-12 19:42:46 · 4 answers · asked by [Caves] 3

list 3 reasons why early earth was inhospitable?

2007-06-12 17:04:13 · 7 answers · asked by whatever 1

2007-06-12 16:35:36 · 16 answers · asked by Kim 2

help please!

2007-06-12 16:10:58 · 1 answers · asked by perfection7 2