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emileth

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  1. I got in also!! I am one part thrilled, one part TERRIFIED!!!! Congrats to you!!
  2. Carlos, The Florida quitline offers free nicotine replacement therapy to eligible callers! It is usually an 8 week supply of the patch, the gum, or the lozenge. To be eligible for the NRT, you do have to enroll in the telephone counseling, which is 4-5 sessions over the course of about a month (about one call a week) They send you the first 4 week supply after your first telephone counseling session, and then the other 4 week supply after your third session. You should definately consider calling the Florida quitline!!!
  3. Coolpeach, I work for the American Cancer Society Quitline and just wanted to let you know that if you dial 1800QUITNOW, you will be routed to your Texas Quitline, which offers telephone counseling (they walk you through the quitting process, give you skills for dealing with cravings,etc) that is scheduled around your schedule and the telephone counselor calls you for each session. They also have booklets they can send you that walk you through the quitting process. Most states offer something similar, and some even offer Free Nicotine replacement therapy. So, if anyone needs help with quitting, definitely consider calling 1800QUITNOW to be routed to your State's quitline to see what they have to offer! All the programs are free as they are funded by the State's tobacco settlement money. Good luck to everyone!!!!
  4. volumne and we can do whatever we want in between calls, including read, study, talk on cell phone, even watch online shows or movies. I currently am fulltime, but if it gets to be too much I will ask to switch to part time for sure and just work 2 days a week. It would hurt a little financially but would definately be doable!
  5. UGH.. I just got the same email!!! Where did you hear June from?!! That would be a nightmare!!! Robin had told me it would be April back when I applied, but I knew that was too good to be true!! My ranking is 45.40 and I also don't know if that is really bad or good, although the higher the better I think! I had heard there was no waiting list back in December, but now I just don't know!!!! It is driving me crazy! I just want to know already!! I was feeling pretty confident back in December but that has all quickly dissolved and know I feel like there is no way I am getting in on my first application. I feel your pain!!!:uhoh21:
  6. Initials are RL!! Private message me if you want the full name! LOL!
  7. ginabanina- I think we HAD to have the same Micro class last semester!!! A bit of a Napoleon complex.... if you understand that then we definately did!!!!
  8. Thanks everyone! I think you are right about the every other weekend thing, because it is not listed by every job posting, only some. I will confirm tomorrow for sure at the interview. Thanks again for your help.
  9. I have an interview for a unit secretary position tomorrow (I am pre-nursing and just applied to nursing school in the fall) at a local hospital. It says it is a full time position, Nights, and then it says EOW. What does EOW mean in terms of shift?
  10. Chapter 9 Genetics: what is difference between eukaryotic and prokaryotic chromosome? Eucaryotes chromosomes consist of a DNA molecule tightly wound around histone proteins, whereas a prokaryotic chromosome is condensed and secured into a packet by means of histone-like proteins. (Histone proteins help to hold the shape of the chromosome). Eucaryotic chromosomes are located in the nuclues, vary in number for a few to hundreds; they can occur in pairs (diploid) or singles (haploid) and they appear elongate. Thechromosomes can contain thousands to hundreds of thousands genes. Prokaryotic have a single cicular chromosome, which contain a few thousand genes. How is DNA replicated? DNA replication happens during the process of normal cell division cycles.DNA copies itself just before cellular division in theprocess of semisconservative replication. DNA replication requires a careful orchestration of the actions of 30 different enzymes which seperate the strands of the existing DNA molecule, copy its template and produce two complete daughter molecules. Steps: 1) Uncoiling the parent DNA molecule 2) Unzipping the hydrogen bonds between the base pairs, thus seperating the two strands and exposing the nucleotide sequence of each strand to serve as templates 3) Synthesizing two new strands by attachment of the correct complemnetary nucleotide to each single stranded template. What does semiconservative mean? semiconservative means that each "parent" or "original" DNA molecule is preserved and used as a template. why is the codon Amino Acid code considered to be degenerative? The Condon Amino Acid code is considered to be degenerative because a particular amino acid can be coded for by more than one codon. It is important because it eliminates substitution problems. What major enzymes are involved in DNA replication and what is their function (see table 9.1)? Helicase- Unzipping the DNA helix Primase- Synthesizing an RNA primer (meaning, START here) DNA polymerase 3-Synthesizes the new daughter strand of DNA using the parental template. It adds bases to the new DNA chain; proofreading the chain for mistakes DNA polymerease 1- Removing primer, closing gaps, repairing mismatches Ligase- puts it back together again; Gyrase- Recoiling **Important. DNA polymerase 3 can only add nucleotides in one direction, so a new starnd is always synthesized 5 to 3. Why are there multiple enzymes involved in DNA replication? Enzymes are specific in their job and their a multiple steps in DNA replication that have to occur. What is DNA composed of and what does DNA look like (sructure-wise)? The base of DNA is a neocleotide. Each neucleotide is made up of 1) Nitrogen bases ( Purine and Pyrimidine) that pair up and attached by hydrogen bonds.. The Purines are adenine and guanine. The Pyramidines are thymine and cytosine. A always pairs with T and G always pairs with C. 2)Phosphate 3) Deoxribose sugar It is a gigantic molecule with two strands combined into a double helix. what is the general flow of genetics with an organism? (how do you get from DNA to protein?) DNA->RNA->Protein Information in DNA is converted to proteins by the process of transcription and translation. what is transcription? Transcription is the formation of RNA using DNA as a template. what is translation? Translation is the synthesis of proteins using RNA as a template. what is an intron, where is it found? An intron is the segements on split genes of eukaryotes that do not code for polypeptides. They can have regulatory functions.. They are found in the Pre-mRNA. The processing of pre-mRNA into mRNA involves the removal of introns. What are the major kinds of RNA and what is their function? Messenger RNA mRNA- carries the DNA master code to the ribisome so it can be translated. Transfer RNA tRNA- brings amino acids to ribosome during translation. Ribosomal rNA- forms the major part of a ribosome and participates in protein synthesis. How is the DNA interpreted and a protein synthesized? Step 1: DNA transcription (happens in the nucleus of eukaryotes) A single strand of RNA is transcribed from a template strand of DNA. The result is mRNA, which is the copy of the structural gene or genes of DNA. In it, T is replaced by uracil. The message contain codon for a specific amino acid. mRNA is single stranded. After transcription, the mRNA is transported out of the cell's nucleus through nuclear pores to go to the site of translation, (the rough endoplasmic reticulum in eurkaryotes) Step 2: RNA translation- Ribosomes bind at the 5´-beginning of the mRNA and start scanning the mRNA for a Start-codon (AUG), a place where the protein synthesis starts. The tRN anticodon with the correct attached amino acid binds to the start codon. Ribosomes move the next codon, allowing a new tRNA to bind and add another amino acid. These series of amino acids form peptide bonds. A stop condon terminates translation and there you have your protein! In general, describe 2 mechanisms of regulation Repressible- being made all the time unless you tell it to stop (ex: amino acids and nucleotides) Inducable- not there until you tell it to make it. (ex: insulin) what are the 3 categories of genes and what do they do? (structural, regulatory, encode RNA) Structural- let's make a protein Regulatory- control gen expression (make it or no, dont make it) Encode for RNA- genes that code for RNA what is a mutation? how are caused? are they good? bad? lethal? A mutation is any change made to the DNA. It can be good or Bad. Sometimes it is lethal, but sometimes not. There are positive effects for the cell which allow the cell to adapt. There are also negative effects for the cells, which can result in lose of function or death of the cell. Can you name a few things that result in mutation? (spontaneous, induced by mutagens) Spontanous- Random Change as a result of a mistake made in copying of DNA. Happens at a known rate of about in a million. Induced- caused by chemicals or radiation- examples are Agent Orange Nonsense- a change in a normal codon into a stop condon, therefore you get incomplete proteins. Very common. Frameshift- reading frame of the mRNA changes. If you knock out a base.. Back-mutation- mutation is reversed. Can you name a few mutagens and what they do? (see table 9.3) Acridine dyes- cause frameshifts due to insertion between base pairs X rays- form free radicals that cause breaks in DNA Ultaviolet radiation- causes cross links between adjacent pyrimidines what is bacterial conjugation and what does it accomplish? Bacterial conjugation is a type of recombination (sex for bacteria) where a plasmid (or other genetic material) is transferred by a dontor a receipiant via d direction connection. (via a pilus of donor cell that connects to a reciepient cell) what is transformation? nonspecific acceptance of free DNA (left around DNA) what is transduction? Donor is dead bacteria. Live recipient cell of same species. Bacteriophage infects host cells serve as the carrier of DNA from a dontor cell to a reciepent cell.
  11. A cell's membrane potential is caused by different electrical charges on the inside and outside regions of the membrane. At rest, the cell membrane is more ngative on the inside and more positive on the outside. A membrane potential is a form of potential energy. A change in in the membrane potential can cause an electrical signal in excitable tissue. (aka, an action potential) The action potential is a large change in the membrane potential of a neuron from a resting value of about -7-mV to a peak of about +30mV and back to -70mV. The action potential is generated at the axon hillock, where the are many voltage gated Sodium channels. Here are the steps: a.. It begins when signals from the dendrites and cell body reach the axon hillock and cause the membrane potential there to become more positive (depolarization). b. As the axon hillock depolarizes, voltage-gated channels for Sodium open rapidly. Sodium moves down its concentration gradient into the cell. The membrane potential becomes more postive as Sodium moves into the cell. c.If the stimulus to the axon hillock is great enough, the neuron depolarizes enough to reach a trigger point called threshold, which is -55 mV. At threshold, depolarization opens more voltage gated sodium channels, which causes sodium to flow into the cell, which causes the cell to depolarize further, opening still more voltage gated sodium channels. A wave of depolarization spreads from area to area of the cell, moving down the axon, depolarizing the area as it goes along. This wave is the nerve impulse. d. Once the action potential has traveled down the axon, the sodium gates close and the voltage gated potassium channels open, causing potassium to move out of the membrane, following it's concentration gradient. This causes the membrane to repolarize, that is become more negative on the inside compared to the outside. This interrupts the positive feedback loop and ends the rising action potential. e. In some neurons, the voltage gated potassium channels remain open after the cell has repolarized. Potassium continues to move out of the cell, causing the membrane potential to become more negative than the resting membrane potential (hyperpolarization)Once all the potassium channels are closed, hyperpolarization ends. Long, but maybe that will help!
  12. I think it is safe to close.. I believe most summer sessions are over now
  13. To do really well, (make an A in the class) while I was working full time and taking care of a family (I have 3 children, a husband, and 3 dogs) I could only take one class a semester (a 3 hour class). Once I quit my job (read=laid off), I have been able to take 2 classes at once and make A's, and this semester I am trying for 3! Hope that helps!
  14. Done! Good luck!!
  15. Thanks for the honesty.. I think you are probably right. Although, I should have mentioned that I am only taking Anatomy... at my school they split Anatomy and Physiology into 2 seperate classes. So Anatomy for me is all memorization of structure with no function yet.

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