Biology - December 2006

2006-12-30 05:22:08 · 11 answers · asked by Sha2 1

2006-12-30 05:14:53 · 3 answers · asked by Caroline O 3

is this right?Am I missing or did I add something wrong in teh list?
1. Nucleus
2. Ribosome
3. ER (smooth and rough)
4. Golgi apparatus
5. Lysosomes
6. Peroxisomes
7. Mitochondria
8. Chloroplasts
9. Mictrotubules, if, Microf.
10. Flagella, cilila(organelle?)
11. Centrioles
12. cell walls(organelle?)
13. Vacuoles and vesicles(organelle?)
14. cell junction

2006-12-30 04:26:59 · 2 answers · asked by avalentin911 2

2006-12-30 04:15:03 · 7 answers · asked by jenkins_nichole 2

True

False

2006-12-30 03:13:22 · 3 answers · asked by Anonymous

a. cells, tissues, organ systems, organs

b. cells, tissues, organs, organ systems


c. tissues, cells, organs, organ systems


d. tissues, organs, cells, organ systems


e. tissues, cells, organ systems, organs

2006-12-30 02:49:37 · 4 answers · asked by Anonymous

2006-12-30 02:24:10 · 14 answers · asked by justanotheruser 5

can u synthesize artificially a protein made of D amino acids..

2006-12-30 00:44:31 · 2 answers · asked by sheyonze 1

all my ancestors had kids at 18. all my friend's ancestors had theirs at 36. I have less facial hair than my friend, do not like boxing, and read more, but am less instinctive and athletic. Over the past 2000 years his family has had half the number of generations as mine. Am I further down the evolutionary line? Or just jealous of his hairy chest??
Does this theory make any sense?

2006-12-29 23:05:57 · 11 answers · asked by amdby 2

I understand how natural selection works and consider myself to have a relatively high level of understanding of evolution in general, but if you take things down to the level of DNA as a chemical, what is it getting out of it? Does it even benefit at all (like a lower energetic state etc.) or is the chemistry detached from the biology at this point?

2006-12-29 22:53:20 · 5 answers · asked by Nom De Guerre 2

my teacher just shifted through the topic, and i went online to do some reasearch to try to understand-and i found these statements-what on earth do they mean?

1)Na+/k+ AtPase of animal cells
Advantage of antiport system: charge compensation
3:2 ratio of Na+/K+ transport compensates for ion leakage differential.

2)Aquaporin
H20 molecules become aligned by interaction with ASN molecules at constriction sites

pls don't give me wikipedia links-i know the website.

2006-12-29 22:45:55 · 1 answers · asked by cute-goddess 5

I'm talking about genetic engineering, and mutations that naturally occur, (but not seen a evolution in process,) so doctors work out ways and means to stamp out these genetic "abnormalities"?

I'd say evolution would not occur this fast! I'm interested in seeing what people have to say.

Thanks!

2006-12-29 22:40:17 · 11 answers · asked by Balaboo 5

2006-12-29 22:37:42 · 4 answers · asked by Mo 1

Is it because it the best shape to protect the young ones , is it because it comes out easier?

2006-12-29 22:17:04 · 8 answers · asked by MV D 1

2006-12-29 21:42:52 · 5 answers · asked by 0857 1

how i improve my Curriculam vitae?

2006-12-29 20:17:14 · 7 answers · asked by kartic 1

I am not aware about the truth status of the if statement. But seriously - wouldn't that be much more practical than eating other stuff?

2006-12-29 19:02:01 · 10 answers · asked by Ejsenstejn 2

internal body temprature.
describe ways that mammals warm and cool themselves in response to their to their environment.
include in your response:
-an example of a mammal and its environment
-both body structures and activities they use
-specific examples of both warming and cooling

2006-12-29 18:44:55 · 2 answers · asked by whiskersbluwie 1

which is used to pump water out of the cell. explain why this structure is necessary for maintaining a water balance between the cell and its environment.

2006-12-29 18:40:12 · 3 answers · asked by whiskersbluwie 1

In the evolution from chimp to man, what factors contributed to the gradual loss of hair on the body? If hair was useful to keep the body warm, why did the hair begin to disappear?

2006-12-29 18:36:40 · 7 answers · asked by dbbrotman 2

Match:

Human brain
Leaf of a plant

Organ
Organ system

I think they're both organs, but one is an organ system. Which is which? Help is appreciated. Thanks!

2006-12-29 18:15:08 · 6 answers · asked by Anonymous

woah

2006-12-29 17:38:05 · 9 answers · asked by Pineapple 3

2006-12-29 17:04:33 · 7 answers · asked by jjjsaady 1

Is there any scientific or psycological reason that right after a guy works up a sweat from hard labor or working out at the gym, and has not yet washed, they seem more attractive? Is there a similar phenomenon that goes the other way?

2006-12-29 16:56:33 · 6 answers · asked by Saphire Aurora 3

2006-12-29 16:46:42 · 4 answers · asked by ? 3

If yes : Why?

2006-12-29 15:55:48 · 9 answers · asked by Anonymous

lysosomes

mitochondria

smooth ER

ribosomes

none of the above

2006-12-29 14:59:10 · 5 answers · asked by ethereast28 1

cytoplasm

phospholipids

cytosol

cell wall

two of the above

2006-12-29 14:52:02 · 2 answers · asked by ethereast28 1

True

False

2006-12-29 14:51:09 · 4 answers · asked by ethereast28 1

True

False

2006-12-29 14:29:03 · 6 answers · asked by Anonymous