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
Sonbull [250]
3 years ago
5

What ion movement changes the membrane potential in a contractile cell from negative to positive during the rapid depolarization

phase?
Biology
1 answer:
Lesechka [4]3 years ago
8 0

Answer:

The influx of calcium ions.

Explanation:

The influx of calcium ions at a certain point produces phase of the action potential also called depolarization which results in the ion movement changes the membrane potential from negative to positive inside the cell.

In action potential, calcium ions may control gene transcription, cell excitability, and neurotransmitter release. In chemical synapses, the influx of calcium ions leads to vesicles filled with neurotransmitters move to the surface of the cell, and into the synaptic cleft release their contents.

You might be interested in
If a carbon atom is bonded to two hydrogen atoms and two carbon atoms, what type of bond must exist between the carbor
sergij07 [2.7K]
I think it would be single bond
7 0
3 years ago
Which answer best describes the relative refractory period in the neuron?
notka56 [123]
The answer that best describes the relative refractory period in the neuron is The resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.
The refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. Thus, because Na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  
8 0
3 years ago
Study the following food chain : grass>rabbits>snakes>hawks.From this chain, you can correctly assume that each populat
masha68 [24]
The answer is D, for when one tropic level is eaten by the tropic level above it, the tropic level is supporting the higher one. I. E. Rabbits are supported by the grass because rabbits eat the grass. Also, the grass population would be larger than rabbits, the rabbits larger than snakes, so on and so forth, so B is ruled out. B states that each population is larger than the one BEFORE it, but there is no way there would be more rabbits than grass. Also, there are both herbivores and carnivores in the food chain, so A and C are out. The best answer is D.
8 0
3 years ago
5. Easy Bio question: Describe one example of vestigial structures that you can find among the caminalcules. These are structure
ikadub [295]
Ear muscles and tailbones are examples of vestigial structures found among the <span>Caminalcules. </span>
7 0
3 years ago
Read 2 more answers
Please help, anything will do! thank you! I have provided eveyrhtign and did the lab (procedures).
Juli2301 [7.4K]
The whale and the bat are the most different because of the size of the hands or fins.

And the human and the cat are the most similar because they are almost identical to each other from the bottom up


You can conclude that the one that were alike were related in some type of way
8 0
3 years ago
Other questions:
  • Why are there more overweight people than overweight animals?
    9·1 answer
  • In response to light, the scn causes the pineal gland to adjust the production of
    10·1 answer
  • All members of the same species that inhabit a particular area are termed a(n):
    9·2 answers
  • What is the difference between directional selection and disruptive selection
    8·1 answer
  • HELPPPP ASAP GETS BRAINLIESTT AND 30 POINTSSS
    9·2 answers
  • What happens during cellular respiration?
    10·1 answer
  • In which phase of mitosis do the sister chromatids get pulled apart to opposite ends of the cell?
    12·2 answers
  • Adaptations of a muscle cell to its functions​
    9·1 answer
  • How many cells in in human body?​
    12·2 answers
  • What is the function of the macula densa cells of the juxtaglomerular complex (jgc)?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!