Biology - January 2007

Under regular conditions, euglena gracilis is elongated. In some texts i read that euglena gracilis at its resting state would look like a flattened cyclinder...which one is it? Is euglena gracilis supposed to be elongated or a flattened cylinder??? also, what does euglena contracted look like? Is it similar to how euglena encysted looks like? When euglena forms a cyst, must it first be contracted, then form a cyst, which is round?? please help, thank you.

2007-01-28 05:04:17 · 1 answers · asked by Tally 2

A membrane that only allows certain molecules to pass through is called:

a. permeable
b. impermeable
c. selectively permeable
d. none of the above

2007-01-28 04:53:51 · 4 answers · asked by shane200388 1

what are there salaries
working conditions
educational requirements
ect.

2007-01-28 04:53:26 · 3 answers · asked by Anonymous

The process of converting the "message" of mRNA into a sequence of amino acids is called:

a. translation
b. transcription
c. activation
d. replication

2007-01-28 04:52:21 · 5 answers · asked by shane200388 1

"Meiosis is a two-part cell division process in organisms that sexually reproduce, which results in gametes with one half the number of chromosomes of the parent cell." I found this from another question.

So if a human diploid cell has 46 chromosomes, after meiosis I, how many chromosomes does the two daughter cells have? I know for a fact that after meiosis II, the 4 daughter cells each contain 23 chromosomes. Doesn't that mean 4 times 23 equals 92 chromosomes?

2007-01-28 04:46:14 · 7 answers · asked by Anonymous

is this to do with heat eneryg??also what is the point in this energy and how does it heat up the water?

2007-01-28 04:44:12 · 1 answers · asked by Anonymous

What is the correct order in which the mitotic phases occur. The phases are A=Anaphase; T=Telophase; M=Metaphase; P=Prophase.

2007-01-28 04:36:18 · 3 answers · asked by shane200388 1

A small organic compound that is the basic structural unit of DNA.

a. gene
b. nucleotide
c. plasmid
d. none of the above

2007-01-28 04:34:13 · 5 answers · asked by shane200388 1

2007-01-28 04:32:30 · 15 answers · asked by Anonymous

2007-01-28 04:28:44 · 5 answers · asked by MELLA_SR_09 1

2007-01-28 04:28:21 · 7 answers · asked by MELLA_SR_09 1

And please if you know any websites that can teach me more about it please put it down.( Not complicated just by step by step)

2007-01-28 04:21:08 · 5 answers · asked by Anonymous

2007-01-28 04:19:31 · 5 answers · asked by Anonymous

DNA is found in:

a. prokaryotic cells only
b. eukaryotic cells only
c. both prokaryotic and eukaryotic cells
d. none of the above

2007-01-28 04:07:47 · 2 answers · asked by shane200388 1

2007-01-28 03:24:21 · 1 answers · asked by yeraciba 2

And why are there more fragments in the "small" bands of the gel then there are in the "long" ones.
Why can this technique of DNA sequencing only be used for small fragments of DNA?
Thank you VERY MUCH!!!

2007-01-28 03:22:58 · 2 answers · asked by Anonymous

2007-01-28 03:06:33 · 7 answers · asked by Anonymous

or is it confined within the limits of the cell?

2007-01-28 02:54:19 · 3 answers · asked by Allen S 2

i'd like it if the places were in Baton Rouge, Louisiana or the surrounding area.

2007-01-28 02:23:02 · 3 answers · asked by Skittles-Dark Edition 4

2007-01-28 02:19:42 · 3 answers · asked by Anonymous

i know it has something to do with clumpping of blood cells so can someone tell me what exactly it is, for example if you mix bloodtype b with a syrum of anti b and clumping occurs is it type b blood? and so on for other bloodtypes

2007-01-28 02:19:15 · 2 answers · asked by titani 2

2007-01-28 02:17:44 · 4 answers · asked by Anonymous

in DNA probe, short single stranded dna labelled with radioactive is mixed with the double stranded dna fragment that contains gene of interest. dna probe is usrd to locate gene of interest in the dna. the question is how do scientist know the base sequence of the radioactively labelled dna before it is mixed with the double-stranded dna fragments that contain the gene?

i hope u can understand the ques. it's a bit hard for me to explain this thing...thanks in advanced.

2007-01-28 02:14:32 · 2 answers · asked by farfalle 2

2007-01-28 02:04:26 · 2 answers · asked by Robyn M 1

2007-01-28 01:43:49 · 15 answers · asked by curious 1

it used to be the THEORY of evolution , what great discovery have science made in the past few years that would change that?

2007-01-28 01:25:14 · 8 answers · asked by Dan D 2

2007-01-28 01:10:32 · 6 answers · asked by Anonymous

How do seedless grapes reproduce?

2007-01-28 00:23:59 · 8 answers · asked by Anonymous

why didnt wheels ever evolve as a means of locomation?

2007-01-27 22:50:39 · 12 answers · asked by Anonymous

A DRUNK friend asked me a question which I didn't know the answer to. Do any of you know if it's possible for a human to get a monkey pregnant? If yes, why, and if no, why not??

2007-01-27 21:34:20 · 13 answers · asked by K9Girl 2