Biology - February 2007

2007-02-24 19:50:08 · 2 answers · asked by Hossein G 1

2007-02-24 19:16:27 · 6 answers · asked by EMAD A 1

On the Maconkey plate, i saw red colonies and clear colonies and on the Hektoen plate i saw yellowish-orange colonies and colonies with black centers (H2S) production. But when i tried to isolate them on the Hek plate again, I cannot see growth from the black dotted colonies at all, while there was the same growth of orange-red colonies from the other organism. Is it possible that the black dotted colonies can disappear? i'm just confused; i've done the gram stains and both are gram neg. rods while the reddish-orange colonies resembles dipplo-cocci looking rods and the clear black dotted colonies had a small thin gram neg rod with majority of short rods. Oxidase test was done on both, and both are oxidase neg. Any helps to what i should focus on as to their identities? I know that one is a glucose fermenting organism while the other, i'm just not sure since i wasnt able to do any other chemical tests on it yet. i just want to have an idea of where i should be headed.

2007-02-24 19:04:24 · 2 answers · asked by Anonymous

I need it for our research and i can't seem to be able to find it's deifinition in the web.... MICRO students, please help! We're desperate!!!

2007-02-24 18:53:26 · 1 answers · asked by Anonymous

5. combination of alleles is either AA or Aa

7. the change in allele frequencies over time

10. combination of alleles can only be aa

12. this is an idea based upon research and observations, without experimental proof

14. the location of a gene on the chromosome

15. a change in DNA, can lead to evolution over time

16. an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena

17. the second part of protein synthesis, this occurs outside the nucleus (mRNA is read, polypeptide chain is formed to create a protein)

20. ______ over occurs during meiosis, and is one source of genetic variation

21. a theory based upon differential reproductive success

22. ______is the base in RNA which replaces thymine

24. cell division to create somatic cells

25. the outward appearance, the manifestation of the genotype

26. a segment of DNA encoding for a particular polypeptide





Down

1. cell division to create gametes

2. sex cells; haploid

3. the fertilized egg; diploid

4. A nucleic acid that carries the genetic information in the cell and is capable of self-replication and protein synthesis

6. two sources of genetic ________ include founder effect and population bottlenecks

8. DNA _______, this is the first part of mitosis or meiosis, and is necessary so that a full complement of DNA is given to every cell

9. The genetic makeup, as distinguished from the physical appearance, of an organism or a group of organisms

11. set of three amino acid bases

13. _________ chromosomes have genes at the same loci coding for the same traits

16. the first step in protein synthesis, this occurs inside the cell nucleus (DNA is made and transcribed into an mRNA strand)

18. body cells

19. these are your body chromosomes (#1-22) and they occur in homologous pairs

23. the alternative form of a gene (i.e. hair colors)

2007-02-24 18:45:38 · 2 answers · asked by The Thinker 3

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2007-02-24 18:41:13 · 2 answers · asked by Bender[OO] 3

a.human b.rabbit c.lion d.opossum

2007-02-24 18:35:12 · 11 answers · asked by Anonymous

What is the difference between relative and absolute dating?

2007-02-24 18:27:05 · 4 answers · asked by Sarah S 3

2007-02-24 18:18:58 · 9 answers · asked by sjorib 1

i hear vehicles,my radio,computer,my cat and people talking outside my house.

2007-02-24 18:09:42 · 10 answers · asked by ila m 1

2007-02-24 18:09:09 · 24 answers · asked by Anonymous

2007-02-24 17:51:34 · 6 answers · asked by SKAJIGO M 1

2007-02-24 17:23:50 · 5 answers · asked by cooljoanne 1

If a marine algie cell ended up in fresh water, what would happen to the cell? Would it die? Would it live? Please help! You biologcal help is needed!!!

2007-02-24 16:49:00 · 4 answers · asked by the_kewl_chick 1

Microvilli, golgi bodies, lysosomes, or multiple nuclei?

2007-02-24 16:08:19 · 1 answers · asked by Rosabelle Winters 1

2007-02-24 15:56:27 · 1 answers · asked by Anonymous

2007-02-24 15:53:05 · 3 answers · asked by ednalyn cute 1

And also, Why does science say that we exist from the result of the evolution and Bible and other books say that ADAM was the first human being in the earth!

2007-02-24 15:46:15 · 10 answers · asked by Tim loves YaLl! 1

2007-02-24 14:28:58 · 2 answers · asked by Anonymous

and the beggining of human began roughly ten thousand years ago, and they each had a life spand of 25 years and that continues to grow.... Then there would have been roughly 40 billion people pass through, and according to ancient text they buried their dead. How come we don't see that many graves?

Were are all the dead guys?

2007-02-24 14:20:25 · 18 answers · asked by Theoretically Speaking 3

Hello! I was just reading a question in the biology section on evolution... NOT talking about how the universe was created, just evolution in general. One person replied with a long, interesting, detailed answer about evolution and it got me to thinking: I'm no brainiac, but I wondered what the fundamental difference is between EVOLUTION and just plain SURVIVAL OF THE FITTEST - being that those animals with the best physical or mental traits are the ones that continue to reproduce and breed. How are the two different? What makes something distiguishable as "EVOLUTION" having occured? I don't know much about either process - I'm interested in what you all have to say. Thanks!

2007-02-24 13:53:49 · 7 answers · asked by Cherstin and Adam F 3

explain please.

2007-02-24 13:40:57 · 6 answers · asked by short a 1

2007-02-24 13:40:38 · 2 answers · asked by charms 1

first specimen

2007-02-24 13:16:48 · 1 answers · asked by sayaw_indak 1

2007-02-24 13:09:21 · 3 answers · asked by Anonymous

2007-02-24 12:51:48 · 4 answers · asked by Anonymous

2007-02-24 12:49:38 · 3 answers · asked by Anonymous

2007-02-24 12:45:53 · 3 answers · asked by Anonymous

2007-02-24 12:32:02 · 5 answers · asked by Epsilon 1

2007-02-24 12:23:26 · 9 answers · asked by brandys_peep 2