1) Neurons propagate signals in the form of action potentials that are mediated by: a.- Na + channels regulated by voltage that open in response to membrane depolarization b.- K + channels regulated b

1) Neurons propagate signals in the form of action potentials that are mediated by:
a.- Na + channels regulated by voltage that open in response to membrane depolarization
b.- K + channels regulated by voltage coupled to neurotransmitters
c.- Ca ++ channels that connect electrical signals to chemical
d.- Chlorine channels regulated by voltage
2) Which of these molecules do not intervene in the Krebs cycle:
a.- Acetyl CoA
B.- Pyruvate
c.- FAD
d.- NAD
3) It is a ligand responsible for the opening of ion channels in the neuromuscular plate
a.- adrenaline
b.- acetylcholine
c.- sodium
d.- calcium
4) Cystic fibrosis is a serious hereditary disease in which there is:
a.- mutation of the genes that code for ABO surface ag
b.- mutation of the genes that encode the proteins that make up the cell’s crust
c.- mutation in the genes that encode the proteins that make up the ion channels
d.- mutation in the ligand that regulates the opening of Ca ++ channels
5) In the previous case the CTFR protein works as:
a.- Calcium channel regulated by cyclic AMP
b.- Channel of k + regulated by cyclic AMP
c.- Na + / K + pump
d.- Chlorine channel regulated by cAMP







Calculate Your Essay Price
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

New Look, Same Us. Enjoy 10% OFF this November using the coupon code: essay10