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
ddd [48]
4 years ago
15

Explain the processes that lead to the exocytosis of neurotransmitter from a presynaptic cell. which components are recycled? wh

ich ion is important in triggering exocytosis?
Biology
1 answer:
anzhelika [568]4 years ago
5 0
1)In exocytosis: The neurotransmitter is produced, vesicles are formed around the neurotransmitters to be released and they fuse with the outer membrane of the presynaptic cell.  Then, their contents (neurotransmitters) are secreted into the synaptic cleft.

2) the compounds recycled: Vesicles.
The membranes formed from old vesicles become part of the presynaptic membrane and new vesicles surge from that area of the membrane. These new vesicles are refilled with more neurotransmitters.

3)Answer: Calcium ions.
Action potentials open calcium channels that are in the membrane of the presynaptic cell, which causes the Ca+ ions to move to inside the cell . Calcium ions trigger the release of neurotransmitter from the vesicles into the synaptic cleft.
You might be interested in
Which is the advantage of water's heat capacity?
kipiarov [429]

Answer:

it protects aquatic life from changes in air temperature

Explanation:

3 0
3 years ago
Read 2 more answers
Muscle tissues are characterized by the presence of elongated cells, often called ____________ , that can contract to create mov
PtichkaEL [24]

Answer:

1. Muscle Fibers

2. Bones

3. Joints

Explanation:

Muscle tissue is made of muscle fibers. The plasma membrane of a muscle fiber is called sarcolemma while its cytoplasm is known as sarcoplasm. Muscle cells are characterized by the presence of specialized endoplasmic reticulum which is called sarcoplasmic reticulum.

Muscle cells exhibit contractility and extensibility. The ability of muscle cells to shorten their length forcibly in response to a stimulus is their contractility. Muscle fibers have the ability to extend and shorten themselves.

Extension and contraction of muscle fibers are responsible for the movement of the human body and its parts.

Muscles are attached to bones via tendons which in turn are the fibrous connective tissues. Muscles are also part of our joints where they assist in the movement by pulling the bones as well as stabilize and strengthen the joints.

7 0
3 years ago
Read 2 more answers
What forms When animal cells are almost finished dividing during telophase and is the point where they will split
salantis [7]

In telophase, the cell is nearly done dividing, and it starts to re-establish its normal structures as cytokinesis (division of the cell contents) takes place. The mitotic spindle is broken down into its building blocks. Two new nuclei form, one for each set of chromosomes.

4 0
4 years ago
Read 2 more answers
Why social relationships are necessary for the survival of human being​
prisoha [69]

Answer:

They help you live longer

Explanation:

Research has shown that social connections not only impact your mental health, but your physical health as well. A review of 148 studies (308,849 participants) indicated that individuals with stronger social relationships had a 50% increased likelihood of survival.

3 0
3 years ago
This simple bacteria cell has the same structure as more complex cells. It controls what comes in to and leaves the cell and als
Trava [24]
The correct answer is a eukaryotic cell. The eukaryotic cell is a bacteria cell that has the same structure as more complex cells. Eukaryotic cells have many structures that help to maintain homeostasis and also to provide energy for the protein synthesis.
5 0
3 years ago
Read 2 more answers
Other questions:
  • When we imagine a person exhibiting anatomical position, the palms of the hands are assumed to be facing ________.
    7·1 answer
  • QUESTION 5
    13·1 answer
  • Which abo blood type is considered to be the universal donor?
    13·1 answer
  • Which volcanoes have a clearly layered structure? Select all that apply.A.cinder coneB.stratovolcanoC.shield volcano
    13·2 answers
  • Scientific consensus supports the idea that living organisms require oxygen. Then, a scientist discovers a type of bacteria that
    14·2 answers
  • Membrane receptors are used by which types of hormones?
    6·1 answer
  • after completing the respiration and fermentation lab activity, your friend decides they want to know more about what factors af
    14·1 answer
  • What two things must an organism be successful at in order to pass on its genes? choosing and selecting surviving and choosing s
    10·1 answer
  • The frequency of sickle-cell anemia, an autosomal recessive condition, is 0.007. Assuming that the population is in H-W equilibr
    13·1 answer
  • Can someone please help me answer these questions? i'll give the brainlest.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!