Education & Reference - 10 September 2006

2006-09-10 22:01:51 · 11 answers · asked by cheema 1 in Higher Education (University +)

If I had to make an outline of a three step plan to help reduce me city's crime rate. What would be a few things I should do, so examples and why they are important?

2006-09-10 21:58:29 · 8 answers · asked by Quin 2 in Homework Help

2006-09-10 21:57:07 · 3 answers · asked by Ravi 1 in Studying Abroad

2006-09-10 21:56:06 · 1 answers · asked by kuhnefelix 1 in Other - Education

2006-09-10 21:55:45 · 3 answers · asked by leah 1 in Other - Education

2006-09-10 21:49:21 · 10 answers · asked by Anonymous in Homework Help

you would say nothing cause if your blind, duh you cant see. But isnt it black? cause even though you have no eyes, your brain HAS to sense something in you vision part of your brains so dont you see wut you see if you close your eyes? iono, me and my friends always talks about these kinds of things. LOL

2006-09-10 21:47:29 · 10 answers · asked by koreanxpride3 1 in Special Education

What are the most important qualifications I need to have if i need to progress as an IT Consultant in th UK.
I am about to take a MSc. course in IT Management. Will it aid my getting a good job?. Or should I just take professional certifications like MCSE, CCNA and others

2006-09-10 21:47:22 · 3 answers · asked by Ben A 2 in Higher Education (University +)

2006-09-10 21:40:18 · 14 answers · asked by gygriner 1 in Home Schooling

I am curious about it...

2006-09-10 21:39:19 · 1 answers · asked by rudy99kimo 1 in Homework Help

"mi amigos"

2006-09-10 21:39:04 · 4 answers · asked by bonnie_blink 1 in Words & Wordplay

2006-09-10 21:32:48 · 3 answers · asked by Anonymous in Higher Education (University +)

Can someone please help me revise this? give me advice?

One may wonder how a single cell becomes two cells, and why this is ultimately important to life. For this essay, it would be much too difficult to discuss the process of cell division, which is the biological basis of life. That being said, this essay will examine more closely the precursor to cell division, also known as DNA replication. DNA replication is the process of copying a double-stranded DNA strand on a chromosome within a cell. The process, in its totality, is a sequence of three basic steps: initiation, elongation, and termination.

To understand the process of DNA replication, you much first be familiar with the structure of DNA. Resembling a twisted ladder or a zipper, DNA is a double helix formed with nucleotides (structural units of DNA containing a base, a sugar, and one or more phosphates), a phosphate and sugar backbone, and nitrogenous bases. There are four bases, and each one will only bond with its complement. Adenine will only bond with Thymine, and Cytosine with only Guanine. The double helix is antiparallel, meaning each strand runs in a different direction.

Initiation, the first step to DNA replication is the unwinding of the double helix with the help of an enzyme called helicase. Once unwound, the DNA unzips and the bonded nucleotides are separated.

In the next stage, elongation, an enzyme called DNA polymerase is important. The DNA polymerase attaches to each strand at the replication origins, reading the nucleotides and finding the complement base. Because the leading strand runs in the same direction that it was unzipped, the DNA polymerase moves with ease down the length of the strand. Because human DNA is so very long (with up to 80 million base pairs in a chromosome) it unzips at multiple places along its length so that the replication process is going on simultaneously at hundreds of places along the length of the chain. Eventually these areas run together to form a complete chain. The lagging strand, however, runs in the opposite direction that it was unzipped, making it harder for the DNA polymerase to move down the strand, so it keeps returning to the strand until the job is done. Proof reader enzymes then run down the strand detecting and fixing errors.

To complete the replication, the new strands are paired with their corresponding original strands. This is called semi-conservative because there is one new and one old strand combined. The strands are rewound into a double helix with the help of enzymes. The cell then prepare for mitosis where a copy of the DNA will be sent to each nucleus, then cells will go through ctytokinesis, where a nucleus will be distributed to each cell. This process has provided the daughter cell with an exact copy of DNA from its parent.

DNA polymerase makes very few errors, and most of those that are made are quickly corrected by DNA polymerase and other enzymes that "proofread" the nucleotides added into the new DNA strand. If a newly added nucleotide is not complementary to the one on the template strand, these enzymes remove the nucleotide and replace it with the correct one. With this system, a cell's DNA is copied with less than one mistake in a billion nucleotides.

With DNA replication, cells will divide thus providing reproduction and life.

2006-09-10 21:31:58 · 0 answers · asked by sball124 3 in Homework Help

2006-09-10 21:31:50 · 13 answers · asked by vijaykumar n 1 in Higher Education (University +)

2006-09-10 21:31:05 · 1 answers · asked by Joel A 1 in Other - Education

I am a Resident Advisor at a unitiversity for a freshman's dorm. I have one resident who is very uncomfortable about her roommate who has guys sleep over a lot of the time. She does not want to confront her roommate about the situation because she does not want tension with her roommate. As the RA, my job is to cite people who break these types of violations. I have not yet caught her roommate in order to give a citation, but have been in my office when she was about to bring a guy in after visiation hours until she saw me in my office on the hallway. Her boyfriend lives faraway and I feel bad for both of the residents in the situation because one has to feel uncomfortable with strange men in the room and the other does not have a place to allow her boyfriend. How do I talk to both of them? I know that I need to be fair to the one who is uncomfortable with strange men in her room,but how do I address the other roommate?

2006-09-10 21:29:10 · 3 answers · asked by soulplane 1 in Higher Education (University +)

more correct in writing English not in spoken En....

2006-09-10 21:28:49 · 8 answers · asked by mesnowz 1 in Words & Wordplay

2006-09-10 21:25:19 · 2 answers · asked by Anonymous in Higher Education (University +)

2006-09-10 21:12:06 · 8 answers · asked by muthu99in 1 in Words & Wordplay

2006-09-10 21:10:04 · 8 answers · asked by nzdota 2 in Homework Help

2006-09-10 21:07:38 · 9 answers · asked by ronjz_pathfinder 1 in Primary & Secondary Education

2006-09-10 21:05:42 · 2 answers · asked by ranvir s 1 in Words & Wordplay

2006-09-10 21:05:37 · 10 answers · asked by Anonymous in Teaching

Hallo everybody. I'm from Italy. I'm searching for someone that can help me to transalte from Czech language to English (or better directly to Italian). Can anyone help me?

2006-09-10 21:04:48 · 7 answers · asked by GiangiRed 4 in Words & Wordplay

Is important to me.

2006-09-10 21:00:06 · 15 answers · asked by Hirni, the brain 3 in Trivia

Which state is the only state in the U.S. that has never had a foreign flag flying over it? First correct gets 10!

2006-09-10 20:56:18 · 14 answers · asked by mr.inquisitor 1 in Trivia

2006-09-10 20:54:51 · 3 answers · asked by terrorist 1 in Higher Education (University +)

2006-09-10 20:54:50 · 34 answers · asked by Doddie 1 in Words & Wordplay

2006-09-10 20:54:00 · 18 answers · asked by singh6085 1 in Other - Education

2006-09-10 20:53:37 · 16 answers · asked by Hirni, the brain 3 in Trivia