1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
antoniya [11.8K]
3 years ago
11

An action potential is regarded as an example of a positive feedback. Which of the following examples below best illustrates the

positive feedback aspect of an action potential?
Potassium permeability is about 25 times greater than sodium ions.

Voltage gated potassium ion channels open slowly and remain open long enough to cause hyperpolarization.

The sodium potassium pump consistently moves ions as long as ATP is available, and regardless of membrane potential changes.

A threshold stimulus will cause the opening of voltage gated sodium ion channels that will cause further depolarizing stimulus.

This stimulus will open still more voltage gated sodium ion channels.
Chemistry
1 answer:
saul85 [17]3 years ago
4 0

Answer:

A threshold stimulus will cause the opening of voltage gated sodium ion channels that will cause further depolarizing stimulus.This stimulus will open still more voltage gated sodium ion channels.

Explanation:

Action potential: It occurs when the potential of a membrane, of a specific cell location rapidly falls and raises. This depolarization stimuli later cause adjacent location to similarly depolarize. It is produce by the special types of voltage gated ion channels present in the cell's plasma membrane.

These channels are closed when the membrane potential near resting potential of the cell which is also called negative potential, but they fastly starts to open if the membrane potential increase to a defined threshold voltage, and depolarizing the potential of transmembrane.

When the channels are open, they allow sodium ions inward flow, which cause the changes in electrochemical gradient and producing further raise in the membrane potential. This then cause more channels to open.

You might be interested in
11 Which compound has the greatest percent composition by mass of sulfur?(1) BaS (3) MgS
harina [27]
Percent composition by mass is calculated (mass of element within compound)/(mass of compound)*100. The lower the total molar mass of the compound, the greater the percent composition of sulfur. In this case, MgS would be that compound, since Mg has the lowest molar mass of the four elements bonded to S.
7 0
3 years ago
Read 2 more answers
Methane is a type of coal.<br> true or false
Karolina [17]
The answer is false methane is emitted from coal
3 0
3 years ago
Calculate the pOH of a 0.0143 M NaOH solution at 25 ⁰C.
arsen [322]

Answer:

A.) 1.845

Explanation:

You can find the pOH using the following equation:

pOH = -log[OH⁻]

Since NaOH dissociates into 1 Na⁺ and 1 OH⁻, the concentration of both ions is 0.0143 M.

pOH = -log[OH⁻]

pOH = -log[0.0143]

pOH = 1.845

5 0
2 years ago
Joseph drives 25miles North in 15 minutes then he drives 40 miles east in 30 minutes, then he uses cruise control option for 1 h
Musya8 [376]

Answer: 1.25 miles per minute

Explanation:

Average speed is the rate of change of total distance covered per unit time.

i.e Average speed = (Total distance / Time taken)

Total distance covered = (25miles + 40 miles + 70 miles + 15 miles)

= 150 miles

Total time taken = ( 15 minutes + 30 minutes + 1 hour + 15 minutes) = 120 minutes

Since 60 minutes = 1 hour, the total time taken is 120 minutes

Now, apply Average speed = (Total distance / Time taken)

= (150 miles / 120 minutes)

= 1.25 miles per minutes

Thus, Joseph drove with an average speed of 1.25 miles per minute.

7 0
2 years ago
Which type of bond is found between atoms of solid cobalt?
Vsevolod [243]
The answer is (3) metallic. Cobalt is a transition metal, so it can't be covalent bonds, which bond non-metals, therefore eliminating choice 1 and 2. Ionic bonds are between metals and non metals, but solid cobalt does not have a non metal, eliminating choice 4 as well. Metallic bonds are bonds between metals, therefore the answer is (3) metallic.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which ionic equation is balanced?
    15·1 answer
  • The energy transferred between samples of matter because of a difference in their temperatures is called a. heat. b. thermochemi
    6·1 answer
  • You carefully weigh out 11.00 g of caco3 powder and add it to 44.55 g of hcl solution. you notice bubbles as a reaction takes pl
    13·1 answer
  • A chemist analyze an unknown liquid .the chemist takes samples from the top ,middle and bottom of the samples .what observations
    7·1 answer
  • Name the five methods used for the formation of salts??
    7·1 answer
  • Use this diagram to determine which of the following statements is true.
    13·1 answer
  • Can you give examples of carbon in our living environment?
    15·2 answers
  • If 32.0g cac2 are consumed in this reaction, how many moles of h2o are needed
    5·1 answer
  • Chemistry help
    8·1 answer
  • Give free 18 points again just answer yes or no<br> is einstein a scientist? yes or no
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!