Biology - March 2007

does anyone know what color the blood is? is it blue or is it red. i mean your veins are blue but blood is red. people say that it is actually blue but when oxygen hits it, it suddenly turns red. i think that since red blood cells contain oxygen that theory cant be. well i really need an answer thank you.

2007-03-26 13:05:30 · 7 answers · asked by maplepwrlvlr 1

2007-03-26 13:01:06 · 2 answers · asked by TJ J 1

2007-03-26 12:56:31 · 3 answers · asked by Tricia F 1

1. one opening to the digestive travt is characterisitic of which of the following groups?
a. arthropods, annelids, mollisks
b. nematodes
c. cnidarians, flatworms
d. flatworms only
e. cnridarians only

2. how are primates different from all other mammals?
a. naked faces
b. ability to produce milk
c. opposable thumbs in many species
d. hairy bodies
e. placental embryonic development

3. which of the following has a 2-chambered heart?
a. amphibia
b. mammalia
c. aves
d. osteichthyes
e. reptilia

2007-03-26 12:56:10 · 2 answers · asked by rnmallorca 1

2007-03-26 12:47:08 · 1 answers · asked by Anonymous

2007-03-26 12:46:00 · 5 answers · asked by Anonymous

2007-03-26 12:44:56 · 3 answers · asked by Anonymous

2007-03-26 12:44:13 · 1 answers · asked by TJ J 1

I tried looking this up on Wikipedia, but it did not cite any reasons as to why people's eyes sometimes change color with their shirts, for example. I also tried googling it, but no luck...

I will, of course, award ten points to whoever can give me a fairly detailed, scientific answer and perhaps cite a source.

2007-03-26 12:41:04 · 4 answers · asked by -- 3

2007-03-26 12:40:40 · 8 answers · asked by Anonymous

2007-03-26 12:34:41 · 3 answers · asked by Anonymous

2007-03-26 12:34:23 · 1 answers · asked by Anonymous

How is the Hershey-Chase experiment (the blender experiment) being applied today in the field of genetics and what is the importance of this breakthrough?

2007-03-26 12:33:54 · 4 answers · asked by Tanya 2

2007-03-26 12:32:24 · 7 answers · asked by nikki b 1

2007-03-26 12:30:01 · 3 answers · asked by TJ J 1

What is Nucleic acid and protein synthesis?

2007-03-26 12:28:53 · 3 answers · asked by Cindy L 1

Do cells of the same species vary in size? If so, to what degree do they vary?

2007-03-26 12:26:38 · 1 answers · asked by on_gt 1

I already understand what a dihybrid is etc., but how is it formed? Or is it just a fiction? I know it's always two traits. I understand how a genotype is formed (Aa) - two alleles from two chromosomes, but how is AaGg formed? Thank you.

2007-03-26 12:21:31 · 3 answers · asked by Wannaknow 1

In my sociology class last year my professor told me that the difference between Black people, White people, Hispanic people and all other people really exists in our culture but not in our genetics, which I was happy to agree with. In this lecture, she cited the fact that all humans, regardless of color, are the same species, which is backed by the fact that we share 99.99% of our DNA. Then about three months later an article was published in TIME magazine saying that chimpanzees and humans' DNA are 99% alike.
And I’m aware of the XY and XX chromosome difference in our sex cells, but its been awhile since I’ve taken biology, and I’m curious to know the DNA differences between men and women, so that I can put the .001% difference in perspective. Men and women have totally different bodies, yet my DNA may correlate more to a Nigerian Woman than to another Caucasian Male, so I wonder, what is the real relevance of DNA, and if it is relevant, do we really understand it?

2007-03-26 12:16:39 · 10 answers · asked by satirev 2

He gave us 0ne allele from each parent ; example R from father and r from mother ; how am i supposed to do a punnet square for this?

2007-03-26 12:16:30 · 3 answers · asked by kobi g 1

was killed very young, how many generations would it take for babies to be born wearing clown costumes?

Sincerely,

I.B. Lamarck

2007-03-26 12:15:40 · 3 answers · asked by Anonymous

2007-03-26 12:09:46 · 2 answers · asked by Anonymous

2007-03-26 12:08:38 · 2 answers · asked by Anonymous

My neighbor asked me this question and I have no idea!!!!

2007-03-26 12:06:05 · 3 answers · asked by docie555@yahoo.com 5

2007-03-26 12:04:24 · 2 answers · asked by Anonymous

Explain the roles of helicase and polymerase in DNA replication.

2007-03-26 12:02:43 · 2 answers · asked by Mickyfoe 1

2007-03-26 12:02:01 · 5 answers · asked by TJ J 1

2007-03-26 12:01:11 · 10 answers · asked by craiginthemidlands 1

what are the 4 stages of a heartbeat?

2007-03-26 11:58:50 · 2 answers · asked by ang3may 1

Thanks\

10. Which base substitutes for thymine in RNA? (Full name, please) _________________
11. In Griffith’s experiments with Pneumococuus, what was the “transformation factor”?___________
12. If a DNA sample has 20% of A, what is the % of C? ________
13. In a single DNA strand, which chemical bond connects two adjacent
nucleotides? _______________________
14. In a double- helix DNA molecule, which chemical bond connects two bases of the opposite strands?________________________
15. Which of the following is a DNA sequence complementary to 5' AAATTTGGGCCC 3'?
(a) 5' AAATTTGGGCCC 3' (c) 5' CCCTTTGGGAAA 3'
(b) 5' TTTAAACCCGGG 3' (d) 5' GGGCCCAAATTT 3'
16. Which exactly atom is responsible for DNA being an acid? ______________________

2007-03-26 11:56:34 · 2 answers · asked by ...confused.. 1