6-2(4+5)+6
First, you go off of PEMDAS, (parentheses, exponients, mutiply, divide, add, subract), and you will mutiply -2 to the numbers in the parentheses, -2x4 and -2x5. Which will then give you -8 and -10.
Then you set up your equation as normal, except without parentheses, which will make the equation 6-8+-10+6.
Then you will combine the two negative numbers, and it'll give you -18.
Then you will combine both the positive numbers, and that'll give you 12.
Add 12 to -18 and that will give you -6.
Answer: B voltage-gated potassium channels
Explanation:#
Tetraethylammonium is a pH- potassium channel blocker.
Therefore, it prevents the escape of potassium ions from the axoplasm, which makes it ( axoplam) positive from the rise in potassium ions concentration , since potassium ion is positive charged and intracellular ion . This initiate repolarization which returns to membrane state potential.
Since it is pH -potassium ion blocker; it does not affect the voltage-gated sodium ion channels, so action potential can occur. But after the sodium gated channels were closed,action potential drops but the concentration of potassium rises because :
1. They are naturally intracellular ions
2. They cannot leave the axoplasm because the channels has been shut. Therefore this stabilizes the membrane potential
A detailed process to test a hypothesis... if its an experiment doesn't that mean you would be testing something? yes! so it would be a process to test something
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Answer:
A. Giraffe
Explanation:
The more chromosome pairs it has, the more genetically different gametes it will produce
