Customer center

We are a boutique essay service, not a mass production custom writing factory. Let us create a perfect paper for you today!

Example research essay topic: E T C Plasma Membrane - 448 words

NOTE: Free essay sample provided on this page should be used for references or sample purposes only. The sample essay is available to anyone, so any direct quoting without mentioning the source will be considered plagiarism by schools, colleges and universities that use plagiarism detection software. To get a completely brand-new, plagiarism-free essay, please use our essay writing service.
One click instant price quote

The way in which a membrane is assembled decides what is allowed in and out of a cell and how it advances through the cell membrane. Certain molecules can simply pass through the cell membrane through diffusion. Diffusion is a type of passive transport meaning no energy is used for the substance to enter or leave the cell. Another way for molecules to enter the cell is through facilitated diffusion. When a molecule is simply to large to diffuse through the cell membrane it can enter the cell through a Transport Protein. Facilitated diffusion is also a form of passive transport.

When a molecule is to large to diffuse through the cell membrane it may enter the cell through the process of active transport. Active transport requires that a phosphate group such as ATP assist a Transport Protein. Exocytosis is another method for larger cells to penetrate the cell membrane and enter the cell. An object or objects are enclosed within a transport vesicle and then fuse to the plasma membrane thus releasing its contents. Endocytosis is just the opposite of exocytosis.

In endocytosis the plasma membrane caves in and closes off the molecules inside itself and then pinches itself away from the plasma membrane and into the cell. Three types of endocytosis are phagocytosis where the cell consumes the molecule, pinocytosis where the cell drinks the molecules, and receptor-mediated endocytosis where the membrane forms a pit and pinches closed with the needed molecules inside. The stomata are microscopic pores bordered by guard cells in the epidermis of leaves that allows carbon dioxide to be exchanged between the environment and the interior and oxygen to exit out of the leaf and plant. The carbon dioxide then goes to the Tylakoids, flattened membrane sacs inside the chloroplast they are used to change light energy to chemical energy. The membrane that is most involved in the synthesis of ATP in photosynthesis is the thylakoid membrane. Inside the thylakoid membrane are both of the photosystem's and both the electron transport chains and ATP synthase.

Starting in photosystem II excited electrons from water travel along the first E. T. C. , a four-protein electron transport chain, allowing H+ ions to travel from one side of the membrane to the other. The excited electrons then travel through photosystem I and onto the second E. T. C. , a two-protein transport chain.

These electrons are then released back into the stroma and help NADP+ and H+ to form NADPH. Energy stored in the concentration gradient is used to produce ATP through ATP synthesis. The H+ ions then travel through the ATP Synthase making it possible for ADP to combine with P to form ATP.


Free research essays on topics related to: electron transport, e t c, plasma membrane, carbon dioxide, cell membrane

Research essay sample on E T C Plasma Membrane

Writing service prices per page

  • $18.85 - in 14 days
  • $19.95 - in 3 days
  • $23.95 - within 48 hours
  • $26.95 - within 24 hours
  • $29.95 - within 12 hours
  • $34.95 - within 6 hours
  • $39.95 - within 3 hours
  • Calculate total price

Our guarantee

  • 100% money back guarantee
  • plagiarism-free authentic works
  • completely confidential service
  • timely revisions until completely satisfied
  • 24/7 customer support
  • payments protected by PayPal

Secure payment

With EssayChief you get

  • Strict plagiarism detection regulations
  • 300+ words per page
  • Times New Roman font 12 pts, double-spaced
  • FREE abstract, outline, bibliography
  • Money back guarantee for missed deadline
  • Round-the-clock customer support
  • Complete anonymity of all our clients
  • Custom essays
  • Writing service

EssayChief can handle your

  • essays, term papers
  • book and movie reports
  • Power Point presentations
  • annotated bibliographies
  • theses, dissertations
  • exam preparations
  • editing and proofreading of your texts
  • academic ghostwriting of any kind

Free essay samples

Browse essays by topic:

Stay with EssayChief! We offer 10% discount to all our return customers. Once you place your order you will receive an email with the password. You can use this password for unlimited period and you can share it with your friends!

Academic ghostwriting

About us

© 2002-2024 EssayChief.com