Biology - December 2006

a. urinary excretion.

b. sneezing.

c. evaporation from skin.

d. defecation.

e. evaporation from respiratory surfaces.

2006-12-27 14:36:35 · 2 answers · asked by Jason D 1

a. when organisms disperse.

b. when organisms die.

c. as a result of metabolism.

d. by organisms at the top of the food web.

e. by herbivores.

2006-12-27 14:31:20 · 1 answers · asked by jay 1

a. Endotherms have a higher metabolic rate than ectotherms.

b. Endotherms can regulate their temperature through behavior.

c. Ectotherms regulate their temperatures through behavior.

d. Heterotherms may function as either an ectotherm or an endotherm.

e. Ectotherms do better in cold climates.

2006-12-27 14:29:43 · 5 answers · asked by jay 1

a. Reflexes are the simplest of all nervous reactions.

b. The nervous system required sense organs before organisms could perceive their environment.

c. Motor neurons lead toward the brain or central nervous system.

d. Reflex actions are stereotyped and repeatable.

e. all of these.

2006-12-27 14:26:43 · 5 answers · asked by jay 1

I've read that it releases certain enzymes from the hyphae that break down the dead organic matter ... but how then do the nutrients end up in the fungus?

2006-12-27 14:09:04 · 5 answers · asked by Anonymous

A detailed instruction + example case would be helpful with the restriction enzymes involved. Thanks.

2006-12-27 13:37:19 · 2 answers · asked by sufzain 1

I am extremely interested in a job opening and one of the qualfications is a degree in any natural science.

2006-12-27 13:30:56 · 8 answers · asked by sharonvania 2

Sometimes they are dark green, sometimes they are light green, when I was young they were light brown.

I know about Mendel, so I am not asking about genetics. I understand pigmentation and melanine. What I want to know is what substances or chemicals cause the infinite variations in eye color shades we see around us all the time.

No doctor has ever been able to tell me, can one of you?

2006-12-27 12:41:12 · 7 answers · asked by Gorgeoustxwoman2013 7

I've always been annoyed by people chewing, and I don't know how but I've learned to somehow make a noise to block it out. I can't do it for long and no one else ever hears it, Its just just like a little hum or so in my ears. Can anyone tell me what the heck is going on to cause this?

2006-12-27 12:27:52 · 2 answers · asked by Lyn 1

What are the functions of the vagus nerve?

2006-12-27 12:01:29 · 8 answers · asked by glance 3

2006-12-27 12:00:54 · 6 answers · asked by Gamer [Girl] 2

Is it true that people who have a larger skull are smarter?

2006-12-27 11:56:09 · 5 answers · asked by <3DA<3 1

yeah...
to grow bacteria on it....and such.

2006-12-27 11:45:01 · 6 answers · asked by llovesurmom 3

Seriously, if global warming is real, and the weather is getting warmer and warmer, how will animals know when to hibernate. I live in NY, NY, its December 27, we haven't seen any snow, yet squirrels, chipmunks and rabbits (i live in the burbs) can still be seen. Is hibernation a necessary proccess for these animals? How is global warming affecting them?

2006-12-27 11:27:05 · 5 answers · asked by Anonymous

2006-12-27 10:10:21 · 3 answers · asked by Anonymous

Skeletal, cardiac, or smooth???

2006-12-27 09:47:21 · 5 answers · asked by Steenskees 2

And it has always been there. I'm not talking about a zit or like I bonked my head on something, it seems to be a part of my skull. It is above my right eyebrow, almost by the hairline. It is only really noticeable when the light hits it the right way, it's about the size of a dime, and it's hard like bone to the touch. It never hurts or anything, I just wonder why it's there...

2006-12-27 09:33:59 · 13 answers · asked by The Only 3

2006-12-27 09:18:18 · 16 answers · asked by Bern C 1

How is evolution possible when, there are NO transitional forms in animals, for example, there are no fossils of animals that have both scales and feathers??

And when one of the the first know creature the trialibite eyes were very complex, and things like flies have a similar eye structure, going against the simple to complex theory

2006-12-27 08:14:04 · 15 answers · asked by Jay 2

2006-12-27 07:49:16 · 25 answers · asked by Anonymous

Most flexor muscles are located on the anterior aspect of the body and most extensors are located posterior. What extensor-flexor musculature is the exception to this generalization?

2006-12-27 07:30:42 · 4 answers · asked by Steenskees 2

A study was conducted in the U.K. in 2001 which determined that the gene that causes red hair + freckles in people is a very old gene (dating 50,000 - 100,000 years).
Modern man (Cro-Magnons) didn't come about until approximately 40,000 years ago, so it is believed that the red hair gene comes from Neanderthals. What are your thoughts on this?

I think it's possible, especially because Neanderthals lived in a very cold environment (Ice Age Europe). Red heads are pale, and pale skin is associated with cold environments. I could easily picture Neanderthals being pale and having red hair.

2006-12-27 07:18:32 · 9 answers · asked by Anonymous

2006-12-27 06:02:39 · 3 answers · asked by Anonymous

After tens of thousands of years of bi-pedal walking, have we learned to do it in the most reliable and efficient way possible?

2006-12-27 05:58:36 · 12 answers · asked by Elite117 3

I know what mitosis is and I understand it's important, but I can't really explain why it is. Any help?

2006-12-27 05:46:02 · 5 answers · asked by Beata 2

2006-12-27 05:19:15 · 13 answers · asked by david 1

.......these fingers are similar in function but different in structure from human fingers.human fingers and elephant fingers are which of the following?
anolgous structures,mimic structures,homolgous structures,or vestigial structures?

2006-12-27 05:16:58 · 2 answers · asked by Anonymous

2006-12-27 05:05:47 · 14 answers · asked by duguu89 1

what percentage of the offspring are carriers?


I would think 100%..

2006-12-27 04:51:32 · 4 answers · asked by Ryan 1

2006-12-27 04:48:44 · 8 answers · asked by hello 1