Biology - May 2007

i need homework help. =[ please help. thankyou. -tiffany

2007-05-01 11:31:16 · 4 answers · asked by Taffyx3 1

2007-05-01 11:22:02 · 2 answers · asked by Eden D 1

Also what is the evolutionary importance of this?

2007-05-01 11:12:23 · 2 answers · asked by bio 1

What are some contributions to them, please list examples

2007-05-01 11:10:34 · 7 answers · asked by Anonymous

I have a project due wed 5/1 and I cant find the answer! AHHH! anyone plz help me out i need a gas exchange for Euglena and paramecium

2007-05-01 11:06:22 · 3 answers · asked by Anonymous

2007-05-01 09:58:06 · 2 answers · asked by Mary O 1

2007-05-01 09:51:26 · 5 answers · asked by Anonymous

2007-05-01 09:30:50 · 4 answers · asked by Eddie J 1

2007-05-01 09:24:17 · 3 answers · asked by Eddie J 1

I've been watching that new Planet Earth series recently and have thought about this for a while now. I mean we, as humans, have evolved in such a way that women attract men. But in the wild other species and animals, the male is usally the one to attract the female. So why is it that women attract men, rather than men attract women? When in our evolutionary tract turn around in who attracts whom.

2007-05-01 09:03:11 · 3 answers · asked by Anonymous

What would a positive and negative result look like for each test?

2007-05-01 08:57:47 · 2 answers · asked by Anonymous

I saw a show on Dog evolution on PBS. There was a russian experiment with foxes, the ones that were tamer were breed. Soon, the foxes were changing skin color. The show briefly said testosterone and melanin were similar in chemical make up, and that is why the skin color changed. I told my doctor father and he didnt believe me. Anyone know where I can back this up on the web?

2007-05-01 08:53:07 · 3 answers · asked by Huntley M 2

Today we dissected Bull Frogs in science class. They've been in storage since August and they were treated with a chemical, to preserve it. What's the name of that chemical?

I also think i might be mildly allergic to it. I was cool with the frog but there was WAY too much of that chemical in it. We had trays that were about 15 inches by 9 inches and 4 inches high. My partner cut open the frog and dumped out the excess chemical from the frog as instructed and the entire pan was filled about a half an inch with the chemical. That's way too much. Any ideas on why i've been sick all day?

2007-05-01 08:41:35 · 7 answers · asked by Karen Smith 3

2007-05-01 08:15:21 · 6 answers · asked by skoolgirl 1

Yesterday i saw a magpie eating the brains of a pigeon. would this be classed as cannibalism or not? are they classsed as a different species? Or would it fall under the same species umbrella?

2007-05-01 07:55:52 · 3 answers · asked by cpj79 3

The adaptation of vertebraes to the land could not be considered complete until the evolution of the___
A. lung
B. notochord
C. amniote egg
D. bony skeleton

2007-05-01 07:49:23 · 5 answers · asked by Anonymous

a)adrenal cortex
b)adrenal medulla
c)posterior pituitary
d)a and c
e)a,b, and c

2007-05-01 07:44:46 · 7 answers · asked by aella 1

2007-05-01 07:39:55 · 2 answers · asked by yeli86 1

a) endocrine and circulatory system
b)respiratory and circulatory
c)nervous and circulatory
d)nervous and endocrine
e)respiratory and nervous

2007-05-01 07:30:51 · 1 answers · asked by aella 1

A. pressure gradient
B concentration gradient
C. volume gradient
D. temp. gradient
E. osmotic gradient

Plasma contains a much greater concentration of ___ then the glomerular filtrate
A. urea
B. water
C. protein
D. sodium ions
E. glucose

2007-05-01 07:30:46 · 1 answers · asked by Anonymous

a) accelerate heartbeat
b) stimulate synthesis of glycogen
c) increase blood pressure
d)reduce blood flow to the skin and digestive organs
e) increase blood sugar

2007-05-01 07:28:27 · 3 answers · asked by aella 1

A. juxtaglomerular cells and the macula densa
B. podocytes and juxtaglomerular cells
C. The macula densa and the filtration membrane
D. juxtaglomerular cells and the filtration membrane
E. glomerulus and Bowmans capsule

Whats one feature of renal blood circulation that makes it unique is that?
A. there is a double set of venules
B.blood flows from arterioles into venules
C. blood flows from venules to arterioles
D. each nephron has at least two capillary networks
E. the nephronis only associated with the glomerulus

2007-05-01 07:24:50 · 1 answers · asked by Anonymous

please help! fast!!! thanks! could you also give me a link if possible?

2007-05-01 07:07:09 · 4 answers · asked by SeaGirl 3

related with biology and primarily the digestive system.

2007-05-01 06:57:58 · 5 answers · asked by andromeda 2

Can someone help me with that? All I know is that they're cold-blooded so their temperature changes with their surroundings, but why does a fish breathe slower when the environment/water gets colder?

2007-05-01 06:51:59 · 6 answers · asked by daisy_fng 2

2007-05-01 06:26:10 · 2 answers · asked by harbinc6103 1

uricles
saccules
hair cells
supporting cells
ampullae

2007-05-01 05:19:02 · 1 answers · asked by Anonymous

-vitreous humor regulates the amount of light enetering the pupil
-transparent cornea is an extension of the csclera
-fovea is the center of the visual field and contains only cones
-ciliary muscles function in accomodation
-retina liesjust inside the choroid and contains photoreceptor cells

2007-05-01 05:17:33 · 4 answers · asked by Anonymous

a. mitochondria

b. Golgi bodies

c. lysosomes

d. vacuoles

e. phagocytes

2007-05-01 04:59:11 · 3 answers · asked by Anonymous

Just wondering.

2007-05-01 04:57:38 · 11 answers · asked by dothejitt3rbug 2