Receptor Proteins And Signal Molecules example essay topic
364 words
Receptor Protein - Protein that binds to a specific single molecule, enabling the cell to respond to the signal molecule. i.e. - The muscles of a person exercising can not contract without receptor proteins and signal molecules that tell the muscles when to contract and when to relax. Second Messenger - Signal molecule produced in response to the binding of a chemical signal. Acts as a signal molecule in the cytoplasm. Signal Molecule - Carries information throughout the body and to other cells. Ion Channel - A large protein in the cell membrane that transports a specific ion. Enzyme Action - Speeds up chemical reactions in the cell Beta Blocker - A drug that interferes with the binding of signal molecules to receptor proteins and heart muscles.
Changes in permeability - Occur when a receptor protein is coupled with an ion channel. Functions of receptor proteins The signal molecule binds to the receptor protein that's specialized to fit the molecule. Binding of a signal molecule to the matching receptor protein causes a change in the activity of the receiving cell in three ways: 1. Changes in permeability of receiving cell 2.
Triggering the formation of second messengers inside the cell 3. Activating the enzymes inside the cell 1. Changes in Permeability An Ion Channel may be coupled with the receptor protein, is in Figure 4-8 on Pg. 84. The binding of the second messenger and the receptor protein causes the Ion Channel to open. This allows specific ions to cross the cell membrane. 2.
Second Messengers Receptor protein can cause a second messenger to form inside of the cell. Some second messengers activate enzymes, triggering a series of biochemical reactions in the cell. They can also change the permeability of cells by opening ion channels in the cell membrane. 3. Enzyme action The receptor protein may act as an enzyme. Receptor proteins can speed up chemical reactions inside of the cell when it is combined with a signal molecule.
It may also activate other enzymes located in the cell or cell membrane.
Things every student should keep in mind
- Free example essays found anywhere online are available to anyone, which makes them used, re-used, paraphrased, and abused millions of times.
- Watch out, some are poorly written!
- We strongly discourage you to submit free essays or any of their parts for credit at your school -- they are easily detected by PLAGIARISM CHECKERS.
- Get a brand-new, 100% original paper that will be written especially for you following YOUR EXACT instructions.
100% money back, no questions asked if you paper is plagiarized (this won't happen anyway).
We use a simple but effective principle: one satisfied customer will come back for more, but one who was cheated and misled will tell 10 others too.
Our clients are treated with the highest level of respect that a legitimate student deserves. You, as a customer, will feel this attitude starting from your first contact with our essay service and all the way through.
A significant percentage of cheap essay writing services have also been the source of complaints from students for selling cut and pasted work off the net -- this is a world away from the personalized essay service that EssayPride offers. All our guarantees are always kept -- we are nothing without quality, affordable prices, and the high degree of customer satisfaction!
What our customers say
Piotr S.
Toronto, Canada
I am an ESL student and I am only learning how to write good papers in English. Thanks to EssayPride I am mastering this skill much faster. They help me because they always respond any questions and explain me things I do not understand. They also strictly follow the deadlines and I am never late with my assignments. Thank you very much, guys, your hard work is appreciated. I will surely be ordering more.
Lindsay M.
Winston Salem, NC
Oh my Gosh! My life has become sooo much easier after I've come across this website. I am a working student, so sometimes I am too overwhelmed with so many things and I really need a hand with my papers. I am glad I have found a company I can trust. I have confidence in these guys, because they proved to be good quite a few times.
Kirk N.
Austin, TX
I never leave reviews for products or services because I am quite particular and picky. Surprisingly enough, EssayPride has managed to satisfy all of my requirements, even though I asked for several alterations to the paper they've sent initially. My assignments are quite complicated and it is essential to possess a certain level of knowledge in order to write a decent paper. These guys have managed, so I give them four stars.
Emma Ch.
Birmingham, UK
Customer service is very responsive to your queries, they answer any question within an hour. Even if you have a problem with an order, you can contact them and they will fix it promptly. The quality of writing is very good, writer knows what he is talking about. I had a very positive experience using this website, I will be a returning customer.
Travis J.
Perth, Australia
I used this website more than once and every time my experience turned out to be extremely positive. I think their price-quality ratio is very good, because I couldn't find anyone writing better than these guys, who would work for this money. Thank you!
Myung O.
Seoul, South Korea
I am a Korean student studying in the US. I would like to thank essaypride staff, especially writer Jeff P., for helping me out so much. My grades are good with all your help and I keep calm about the results of my year.
Boyi Zh.
St. Louis, MO
As probably any student, I was quite hesitant about asking somebody else to do my assignments at first. However, after EssayPride has sent me my first paper and I've read it, I understood that I could actually learn a lot from them. The research they've done was impressive and I understood the topic even better than after going to class and reading my textbook. I am not using this website to "cheat", I am using it as a tutoring service, they help me to understand the material better.
