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slavikrds [6]
3 years ago
5

А____is a quantity that has magnitude and direction

Biology
1 answer:
Vikki [24]3 years ago
6 0

Answer:

Vector

Explanation:

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Prior to neurotransmitter release, vesicles are transported to specialized regions of the presynaptic terminal called _______ zo
coldgirl [10]

Answer:

The correct answers are: Synaptic Active Zones, Exocytosis.

Explanation:

  • An impulse after travelling along the dendrites, cell body and axon of a neuron reaches the axon endings in the form of an action potential (signal transmitted by the activation of voltage gated sodium and potassium channels present on the plasma membrane of the neurons).
  • At the axon ending or the pre-synaptic region, the action potential triggers the opening of the voltage dependent calcium channels, that promotes the influx of calcium ions into the pre-synaptic region of the neuron.
  • This process triggers the fusion of the neuro-transmitter carrying vesicles with the plasma membrane in the pre-synaptic region of the neuron.
  • As a result of fusion the neurotransmitter is released into the synaptic cleft.
  • At the pre-synaptic region of the neuron, there is a huge concentration of neuro-transmitter carrying vesicles which remain adhered to proteins called CAZ (cytomatrix at the active zone) proteins. These proteins help the neurotransmitter carrying vesicles to remain tethered or docked to the pre-synaptic membrane in the axon terminal of the neuron. They together form the Synaptic Active Zone.
  • In response to calcium ion influx these proteins help the neurotransmitter carrying vesicles to fuse with the plasma membrane in the pre-synaptic region of the neural axon and release the neurotransmitter into the synaptic cleft.
  • The process of fusion of the neurotransmitter carrying vesicles with the plasma membrane in the pre-synaptic region of the neural axon followed by the release of the neurotransmitter into the synaptic cleft is known as Exocytosis.
6 0
3 years ago
List three potential problems that could arise from drilling for oil in the tundra.
d1i1m1o1n [39]

Answer:

Explanation:

Drilling disrupts wildlife habitat. ...

Oil spills can be deadly to animals. ...

Air and water pollution hurt local communities. ...

Dangerous emissions contribute to climate change. ...

Oil and gas development ruins pristine landscapes.

4 0
3 years ago
Name the type of element that has luster, conducts electricity and is malleable
Daniel [21]

Answer: Metal

Explanation :Metals are often shiny (luster) , malleable, ductile, and can conduct electricity.

Hope this helps.

8 0
4 years ago
In sunflowers, tall stems (T) is a dominant trait while short stems (t) is a recessive trait. In a field of 1000 sunflowers, 820
Ilya [14]

<span>D)<span>About 50% are heterozygous for tall stems.</span></span>
6 0
3 years ago
Bees feed on nectar from flowering plants in return the flowers are __________ by the bees
nirvana33 [79]

Answer:

pollentate

Explanation:

correct me if im wrong pls give brainliest

7 0
3 years ago
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