Please help with some questions

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Please help with some questions

Postby Teejo » Dec 31 2017 12:20 pm

Hello! Im wondering if I could please get some help with these questions:

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 in the genes that code for ABO surface ag
b.- mutation in 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

Please if you know the correct answer please help me, I had to use google translate because my scientific english is not good at all.
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Joined: Dec 31 2017 12:15 pm

Re: Please help with some questions

Postby relaxin » Jan 02 2018 3:59 pm

Sorry. We cannot help you with the homework.
Retired academic researcher. Mention of a specific product does not imply my endorsement of the product. No conflict of interest or guarantee to work on the advice given. Do as I say, not as I do. Not liable to the loss of your valuable samples.
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