Biology - September 2007

Serious answers only, please.

2007-09-02 12:49:37 · 7 answers · asked by Anonymous

I don't have a scale, and I don't want weigh them in school(walking around with them all day).

2007-09-02 11:06:39 · 1 answers · asked by Anonymous

Hello,

I am studying evolution right now, and wondering a little about it.

Did we evolve from other animals, or how did it work? And how long did it take humans to get here?

Can someone just give me a basic summary of how this all happened? I am confused about how it works!

2007-09-02 10:27:09 · 3 answers · asked by Jacques 3

Many humans are lactose-intolerant, meaning they cannot digest milk products containing the disaccharide lactose. Hypothesize the reason behind lactose intolerance.

2007-09-02 08:41:15 · 9 answers · asked by w00t w00t 1

2007-09-02 08:39:45 · 4 answers · asked by yanetalex_girl 1

1. Retroviruses are unusual because:
a. The virion contains DNA and replication occurs via an RNA intermediate
b. The virion contains RNA and replication occurs via a DNA intermediate
c. The virion contains both DNA and RNA
d. None of these are true

2. For which of the following DNA viruses does replication of DNA occur in the cytoplasm?
a. Parvoviruses
b. Papovaviruses
c.Herpesviruses
d. Poxviruses

3. Viroids are unusual because they:
a. Consist of naked DNA
b. Consist of RNA and protein
c. Contain no nucleic acid
d. Contain neither nucleic acid or protein
e. None of these

4. Prions are of significance because they cause diseases known as:
a. Chronic Wasting disease
b. Kuru
c. Bovine Spongiform Encephalopathy
d. Influenza
e. all of the above
f. None of the above

5. Prions are unusual infectious agents because they:
a. Consist of naked RNA
b. Consist of protein and RNA
c. Consist of protein with no detectable nucleic acid
d. None of these

2007-09-02 06:16:57 · 7 answers · asked by Anonymous

Before the birth they have good health but after they lose hair and teeth, and have constant health problems, and are never the same. It seems as if they were made by nature to last one birth, and then it does not matter if they survive or not. Should not they have been made more resilient as survival of species? It would not do to produce numerous female species to use only once evolutionarily, so why are they like this?

2007-09-02 06:13:52 · 7 answers · asked by 17 3

2007-09-02 04:41:04 · 10 answers · asked by Anonymous

for example Botany: the study of plants-- thats tho only one i know

2007-09-02 02:48:55 · 2 answers · asked by sasbeadbug12 1

2007-09-02 02:16:24 · 15 answers · asked by mrmoe_money 1

I mean, it's so impractical. If we stumble, we only have one other leg to fall back on whereas other animals have three. It's takes alot of practice to actually balance on our two legs, it takes babies long enough to crawl. It would be faster on four legs aswell. I know that we used to walk on all fours. Why did we evolve into only walking on two? We're too weak to do that now and our limbs are all the wrong length to try and make us better but why did we change in the first place???

2007-09-02 01:56:10 · 6 answers · asked by Burris 3

2007-09-02 00:43:42 · 6 answers · asked by leo l 1

2007-09-01 22:12:29 · 7 answers · asked by Lutfor 3

This is not a religious debate.

2007-09-01 19:16:47 · 6 answers · asked by Anonymous

in the process of evolving always mutations that helped them to benefit in their environment? Or were some of these mutations fatal or harmful to the organism?

2007-09-01 16:39:29 · 12 answers · asked by Anonymous

Someone else posted this question and didn't get the right answer. Now I have the same thing in my house...and I don't know what it is or how to get rid of it.

I live in Los Angeles County. It's the end of August and hot as heck, if any of this info helps someone out there figure out what this is.

They're not box elder bugs...they look different.

These things are skinny, about the size of a tic tac. The black, ribbed abdomens are kind bloated compared to the rest of the body and the head is red. What's really creepy are the loose wings all over my bed...ewww...what IS this?

2007-09-01 14:28:12 · 2 answers · asked by T 4

please list examples if so

2007-09-01 14:04:06 · 3 answers · asked by Anonymous

I recently heard that an organisms body temperature will become lower if it has a viral illness. I know that it will raise with a bacterial infection as the bodys way of destroying any bacteria... but why would it lower for a virus?

2007-09-01 12:46:03 · 5 answers · asked by Anonymous

I want to know when, how and why life originated in a far past. Life came to be from one single cell who learned to divide itself. But how did it learn to do so? God created life from void or was it evolution?

2007-09-01 12:41:19 · 13 answers · asked by davichito 1

2007-09-01 12:24:11 · 5 answers · asked by xscarredapplex 1

Henry Gee, chief science writer for Nature, wrote in 1999: “The intervals of time that separate fossils are so huge that we cannot say anything definite about their possible connection through ancestry and descent.” Although Gee is a believer in Darwin’s theory, he acknowledged that one must assume the truth of the theory when studying human origins, because by its very nature the fossil record cannot corroborate it. Gee concluded: “To take a line of fossils and claim that they represent a lineage is not a scientific hypothesis that can be tested, but an assertion that carries the same validity as a bedtime story--amusing, perhaps even instructive, but not scientific.”

Also there is the lack of high level models for macro evolution. Some proposes Theoretical Genetics, but it applies to micro evolution only. http://www.genetics.org/cgi/content/full/169/1/1
Known mechanisms turn on/off complex information *already available*: http://ucsdnews.ucsd.edu/newsrel/science/mchox.htm

2007-09-01 11:19:26 · 11 answers · asked by My account has been compromised 2

what was the main problems you face? dose the concentration of the genomic DNA affects the results? any advises or recomended reading about the procedure.

2007-09-01 10:47:28 · 2 answers · asked by dan 1

what are the four themes that unify Biology

2007-09-01 09:44:32 · 4 answers · asked by Anonymous

It involves vibrio ficheri and buioluminescence!! so vibrio fischeri is a bacteria that produces light, which is called bioluminescence. Can anyone help me think of a project envolving this??? THANK YOU!!!



examples are like , What are the effects of pollution on this organism and it's light?? but i cannot do this bc it has been done too many times!!!

2007-09-01 07:12:14 · 2 answers · asked by miss anatomy 2

2007-09-01 07:02:22 · 1 answers · asked by ~~*Skadi*~~ 2

I read of this specimen many years ago, and misplaced the article. The Chimp did not act like other chimpanzees. It would perform complex sequences of assigned tasks involving cleaning up its cell, and then would return to its cot and sit upright on it with its legs crossed -- not manic like other chimps. There was serious speculation that it might be a human/chimp hybrid.

2007-09-01 06:56:49 · 2 answers · asked by beingagood1 5

Our body consists of vessels i-e arteries ,veins and capillares.In arteries oxgenated blood flows and in veins deoxgenated blood flows.So my question is why can`t we see arteries but can see veins from the skin i-e in our arms.

2007-09-01 04:59:11 · 7 answers · asked by Anonymous

2007-09-01 04:39:33 · 3 answers · asked by star baller 360 5

but smaller. Presumably their muscle is alot more efficient than ours. (even more efficient than that of those hard working romans ;) ) Is there an advantage to humans becoming weaker? Is it an unwanted side effect of intelligence - that our bodies become less important and therefore are able to deteriorate whilst we remain viable?
If so, in 100,000 years, will all humans be confined to wheelchairs?

2007-09-01 04:13:17 · 12 answers · asked by Chris tf 2

please tell me

2007-09-01 03:35:03 · 5 answers · asked by kissofasia 2