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
BabaBlast [244]
3 years ago
11

What characterizes depolarization, the first phase of the action potential? The membrane potential changes to a less negative (b

ut not a positive) value. The membrane potential changes from a negative value to a positive value. The membrane potential reaches a threshold value and returns to the resting state. The membrane potential changes to a much more negative value.
Biology
1 answer:
svp [43]3 years ago
6 0

Answer:

Option (2).

Explanation:

The cell potential or membrane potential may be defined as the difference in the electric potential between inside and outside of the cell. The membrane potential of the cell changes during the propagation of action potential.

The resting membrane potential is -70mV. The influx of sodium ions causes the depolarization of the cell membrane. The cell potential changes from -70mV to + 30mV. The membrane potential becomes more positive during the depolarization phase.

Thus, the correct answer is option (2).

You might be interested in
Which was most likely an effect on society that resulted from improvement in handling blood during world war l and world war ll?
Lana71 [14]

Answer:

Effective food supply was most likely an effect on society that resulted from improvements in blood handling during World War I and World War II.

Explanation:

7 0
2 years ago
According to the fossil record found in these sedimentary layers, what conclusion can be drawn about the movement of life to lan
timofeeve [1]

The correct answer is: B) As land plants became more complex, animal life did as well.

This is because land could not be colonized by other organisms such as animals until land plants became established-there was nothing for animals to feed on.

So, plants were one of the earliest organisms to leave the water and colonize land.


6 0
3 years ago
Read 2 more answers
It is mistakenly believed that the rapid evolutionary changes of punctuated equilibrium are the result of some mechanism of evol
netineya [11]

Answer: Natural selection can be defined as the differential survival and reproduction of members of the population of a species that have suitable traits to survive in a population of species.

Explanation:

The punctuated changes in the population of species have been found inordinately faster in the geological time scale, but changes per-generation have been relatively slow. Also, the rate of evolution in such a population is also slow. The punctuated changes in the population are because of evolution but the per-generation changes are the outcomes of the natural selection, in which only the beneficial traits are passed from one generation to another.

3 0
3 years ago
Select all that apply. Proteins _____. contain carbon, hydrogen, oxygen, and nitrogen. consist of amino acids are derived from f
Aleks04 [339]

This question makes no sense

3 0
3 years ago
Read 2 more answers
Which of the following macromolecules a
serious [3.7K]

Answer:

B carbohydrates

Explanation:

Your cells convert carbohydrates into the fuel molecule ATP through a process called cellular respiration.

3 0
3 years ago
Other questions:
  • 3. If a daughter has an X-linked recessive disorder, such as color-blindness, she inherited the
    10·1 answer
  • Explain how trees are producers
    12·1 answer
  • Which of the following is thought to be the common ancestor to plants?
    11·1 answer
  • 1. If a black heterozygous guinea pig is crossed with a homozygous white guinea pig with the
    6·1 answer
  • Are mouse cells eukaryotic or prokaryotic?
    9·2 answers
  • Which of the following is NOT a class of annelid?
    5·1 answer
  • What is full course meal?​
    10·1 answer
  • Name three elements used to date fossils with absolute dating
    14·1 answer
  • Which of the following lists the correct symbol for the ion that tin forms when it loses 2 electrons, the correct classification
    15·1 answer
  • Which statement best describes how a cell-membrane helps a cell remove waist?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!