Biology - April 2007

I need a web site that shows me facts about the Cardiovascular System.. Please and Thank you

2007-04-20 13:43:13 · 1 answers · asked by ♥dnt_trip♥ 1

You dissect a frog muscle with its motor nerve intact and place it in a chamber filled with Ringer, a solution which approximates the normal ionic composition of extracellular fluid. You position two stimulating electrodes on the preparation, one on the nerve and the other directly on the muscle. Stimulating via either electrode causes muscle contractions. What would happen after you applied a toxin that blocked voltage-gated Ca2+ channels?
a. The muscle would contract when stimulated via the nerve, but not when stimulated directly.
b. The muscle would continue to contract normally when stimulated at either location.
c. The muscle would not contract when stimulated at either location.
d. The muscle would contract when stimulated directly, but not via the nerve.

2007-04-20 13:11:11 · 4 answers · asked by Anonymous

does it provide them with food? or anything?

2007-04-20 13:02:52 · 5 answers · asked by Anonymous

well what does it state. 1st person to anwser right will get 10 points

2007-04-20 12:47:23 · 6 answers · asked by The REBELution! 3

2007-04-20 12:15:30 · 3 answers · asked by Anonymous

2007-04-20 12:10:21 · 8 answers · asked by ibid 3

For Example it went Gibbon, Oran, Chimpanzee, Then Man

2007-04-20 12:00:33 · 17 answers · asked by Funfact 1

Okay, I have this huge question I need answered for biology. I would really appriecate anyone's answers and help to understanding this problem.

Indiviuals on low-fat, low-protein diets obtain the bulk of their energy from carbohydrates. Complex carbohydrates such as starch and disaccharides such as sucrose are first broken down into glucose. Through a series of metabolic reactions and pathways, the glucose is completely converted to CO2, and the energy it contains is used to produce ATP. Describe this process in detail, using schematic diagrams to explain your answer.

2007-04-20 11:25:42 · 3 answers · asked by Marit 1

2007-04-20 09:40:40 · 4 answers · asked by Anonymous

I know it might seem like a silly question but I thought I would use it to get some imaginative juices flowing. So with that said, where do you all see humanity 500 quadrillion years from now? ie: 500 x 10^24
or 500 x 1,000,000,000,000,000,000,000,000 yrs

2007-04-20 09:25:02 · 23 answers · asked by Cheyenne 1

The Piltdown man was faked evidence for evolution. This occured over 100 years ago. Fifty years ago this hoax was exposed, yet this hoax is still in textbooks today. Textbook authors don't tell the students this evidence is a lie. If evolution is so well established why do they still point to lies as evidence?

2007-04-20 08:45:31 · 17 answers · asked by nivlem 1

for my biology class

2007-04-20 07:47:14 · 13 answers · asked by Peter_33 2

2007-04-20 07:29:40 · 9 answers · asked by lily_evans 2

I've heard that if bees go completely extinct, humans and other animals will have only four years left to live. Why is that?

2007-04-20 07:15:00 · 4 answers · asked by Anonymous

who was it that had that many kids

2007-04-20 06:47:59 · 5 answers · asked by chicken man 1

how can evolution explain living animals like stick worm or kameleon . evolution says that everything is a coincidence but how coincidence "invent" such kind of animals.
there is said that animals (and plants of course too) are "made" according to environment.
and this is made by "natural selection".
let's go to the example .
as a example of evolution there is often shown a kind of butterfly which has changed wing color from white to black, because tries or something became dark because of industrial development.
and butteflies need to hide from "bad animals" .
so..
in normal environment there would be black or other colour butterflies but they did survive and did not hug with other butterfly strongly in bed. I think natural selection is too simple world is much more comlicated than :
"if has fat buttock will survive and when has not will not "
I hope you will understand what I want to say...
I am afraid I wouldn't haha....
but I wanna say something though my language capa

2007-04-20 05:10:37 · 9 answers · asked by Anonymous

2007-04-20 04:50:43 · 5 answers · asked by werdn w 1

2007-04-19 23:20:32 · 7 answers · asked by Alladdin 1

Ive been learning about the human body in school but
Ive been wondering for the answer to these questions:

How are the human bones formed or created?
How do they adapt or grow as the body grows?
What is the first human body bone formed?

2007-04-19 16:51:29 · 3 answers · asked by Octavio 1

2007-04-19 16:48:59 · 3 answers · asked by Alizal 1

2007-04-19 16:45:57 · 6 answers · asked by Alizal 1

2007-04-19 16:24:51 · 7 answers · asked by Anonymous

2007-04-19 14:55:10 · 4 answers · asked by hotblondebabe619 1

A. polysaccharides ...disaccharides
B. fat ...fatty acids and glycerol
C. CO2 and H20 ....carbs...
D. protein....amino acids
E. disaccharides .....monosaccharides


and if possible..

fatty acids and certain lipids in the duodenum initiate the realease of ?
A. secretin and gastrin
B. gastric inhibitory peptide and cholecystokinin
C. gastrin and gastric inhibitory peptide
D. somatomedin and GIP
E. insulin and glucagon

2007-04-19 14:51:39 · 5 answers · asked by Anonymous

If you don't believe in evolution, show me your point, or try to convince me.

2007-04-19 14:08:04 · 23 answers · asked by gaahgasjhagshjkgahksjaghjks 2

A merging of philosophy and biology, a greater understanding of reality?

2007-04-19 13:38:10 · 2 answers · asked by ..*Real-ality*.. 3

2007-04-19 13:05:07 · 6 answers · asked by Liz 1

what can be some things that can help me prove a point that evolution has acctually happend and that darwins ideas are correct?

2007-04-19 12:42:01 · 18 answers · asked by Anonymous

form the first million?

2007-04-19 12:38:38 · 1 answers · asked by Anonymous

2007-04-19 12:30:37 · 13 answers · asked by ibid 3