Biology - May 2007

2007-05-18 02:05:00 · 5 answers · asked by Anonymous

2007-05-18 00:40:01 · 5 answers · asked by Sandy 1

2007-05-17 22:10:06 · 1 answers · asked by Jadochop 6

There is nine planets in our body the eye ,nose ,mouth , penus , secretion portion , connction between mother & child .

2007-05-17 21:44:40 · 10 answers · asked by sujithhtijus 1

2007-05-17 20:14:45 · 5 answers · asked by Anthony A 2

2007-05-17 20:05:12 · 2 answers · asked by Lucy 1

Age quicker then the original human it got the dna from

2007-05-17 19:44:54 · 7 answers · asked by Anonymous

some fish have bony fins. if the body of water they are in dies out these fins can be used to help the fish walk to another body of water. in this context bony fins are an example of

paedomorphosis
an exaptation
an evolutionary novelty
punctuated evolution
neoteny

2007-05-17 19:36:17 · 4 answers · asked by mac m 1

I'm stuck at this question

Select the true statements concerning mitosis and meiosis from the following:

1. meiosis results in four genetically identical daughter cells from each parental cell.
2. homologous pairing of chromosomes occurs only in meiosis
3. fusion of male and female centromeres holds pairs of doubled chromosomes together during early meiosis
4. DNA synthesis occurs only once during mitosis or meiosis
5. The chromosomes descended from the male parent pass as a set into gametes; similarly for female chromosomes.

a. all of them
b. 1, 2, 4
c. 1 and 5
d. 4 only
e. 2 only

The teacher wrote that the answer should be b and I'm confused as to why. I know that 2 is true and that 4 is true but I thought only mitosis resulted in identical daughter cells from each parental cell and meiosis was different. so how can it be option B? can someone please help?! Thank you

2007-05-17 18:26:02 · 6 answers · asked by me 1

2007-05-17 17:24:24 · 4 answers · asked by abhinav b 1

The spermatic artery and vein don't just traverse the same canal. They are so closely associated with one another that they exhibit countercurrent properties – not only do they run side by side through the inguinal canal, they also form a rete by which venous blood is warmed and arterial blood is cooled. Why is this necessary?

2007-05-17 16:33:13 · 1 answers · asked by man_d1ck 1

2007-05-17 16:30:56 · 6 answers · asked by bhiboy 1

2007-05-17 16:26:13 · 4 answers · asked by J 3

I just saw a documentary about the French Revolution and was appalled by how many people they capriciously sent to the guillotine. Supposedly, it was intended to be a more humane alternative to hanging. I don't see how that can be true, since it leaves your brain completely intact, and your nerves are left to sense all the pain. There has to be a period of time after the blade falls when you are still mostly conscious (at least aware of the horrible pain). My question is, after your oxygen supply is cut, how long can you expect to be conscious?

In a perfect world, you would lose consciousness immediately, but I know that's not true. That thought scares the hell out of me.

2007-05-17 16:23:06 · 9 answers · asked by Anonymous

2007-05-17 16:09:31 · 2 answers · asked by Anonymous

I need scientific websites listing different reasons. Proof why racism is illogical.

2007-05-17 16:01:35 · 2 answers · asked by frosting 1

2007-05-17 15:58:20 · 4 answers · asked by harleyrider786 1

Would you expect the DO (dissolved oxygen) of water taken from a lake at 7pm to be higher or lower than samples taken at 5pm? Explain.

2007-05-17 15:56:54 · 4 answers · asked by harleyrider786 1

would you expect the DO (dissolved oxygen ) in water taken from a stream entering a lake to be higher or lower than the DO taken from the lake itself? Explain.

2007-05-17 15:54:44 · 1 answers · asked by harleyrider786 1

Considering our (human) bodies' excretory and urinary systems, can we poop and wee-wee at the same time?

2007-05-17 15:50:04 · 17 answers · asked by Anonymous

10. Peripheral motor neurons that simulates skeletal muscles are part of the __________ nervous system.
11. The _________ division of the autonomic nervous system keeps your body functioning even when you are asleep.
12. The ________ division of the autonomic nervous system dominates in times of physical or emotional stress.

2007-05-17 15:27:37 · 1 answers · asked by Anonymous

_____ 13. Vescles in the presynaptic neuron fuse with teh cell membrane.
_____ 14. Neurontransmitter molecules are released into the synaptic cleft.
_____ 15. A nerve impulse arrives at an axon terminal of the presynaptic neuron.
_____ 16. Neurotransmitters bind to receptor proteins on the postsynaptic cell.

2007-05-17 15:19:25 · 1 answers · asked by Anonymous

I'm doing a pig disection and these are the questions about their circulatory system

2007-05-17 15:18:54 · 3 answers · asked by Anonymous

2007-05-17 15:07:55 · 4 answers · asked by pinkrose 1

2007-05-17 15:03:03 · 5 answers · asked by aby 2

How Long Would It Take for a Person To Die From Carbon Minoxide If They Duct Taped a Garden Hose to An Exhaust of a normal sized Car?? And What Are The effects of It That You Will Notice Before You Die??
Im Not suicial Or anything, Just Wondering??

2007-05-17 14:35:35 · 6 answers · asked by Anonymous

I heard that there was a show that had human semen put into an oragutan or monkey and they made like this freaky half-human half monkey thing. Does anyone know if this is true and how i can see?

2007-05-17 13:12:36 · 3 answers · asked by Anonymous

Microbiology Question

2007-05-17 13:06:21 · 2 answers · asked by fender123 1

I think it was Stephen Jay Gould who said that debating with creationists gives the impression that there is a genuine scientific controversy over the origins of life.

But doesn't this give them a free reign? It seems that intelligent designers are gaining ground, and so in the mindset of most Americans there *is* a genuine scientific controversy. Shouldn't biologists launch a more impassioned defence of evolution and expose these frauds for the unscientific con-artists they are?

2007-05-17 12:57:12 · 5 answers · asked by Anonymous

2007-05-17 11:25:37 · 4 answers · asked by anangelcalled 2