Answer:
Lightning is an electrical discharge caused by imbalances between storm clouds and the ground, or within the clouds themselves. Most lightning occurs within the clouds
The activity occurring at an axon terminal involves the following labelled 1 - 6:
- synaptic vesicles
- synapse
- motor end plates (neurotransmitter receptor)
- calcium channel
- neurotransmitters
- axon
The transmission of nerve impulses between neurons, muscles cells or glands is known as nervous transmissions.
Axons are long slender projections of neurons which are responsible for nervous transmission.
Neurons use both electrochemical signals and chemicals known as neurotransmitters to transmit impulses from one neuron to the next.
The junction between two neurons or an effector cell is known as a synapse.
Neurotransmitters are packaged into synaptic vesicles at the axon end. When electrical signal reaches the end of the axon, influx of calcium ions through the calcium channel cause the the synaptic vessels to fuse with the presynaptic membrane and then release their contents into the synaptic cleft or space.
The neurotransmitters released then bind to the motor end plate resulting in another impulse transmission along the second neuron or an action by effector cells.
Learn more at: brainly.com/question/783627
Use Hooke's law to find the spring constant, k :
F = kx ⇒ 2.5 N = k (0.040 m) ⇒ k = 62.5 N/m
Then use the law again to find the force needed to extend the spring by 12 cm = 0.12 m :
F = (62.5 N/m) (0.12 m) = 7.5 N
Answer:
Without light, we can't see. So life would have been harder-much harder.
Explanation:
Our eyes take in light to see- in the darkness they take in as much light as possible, and when it's bright, they take in as little as possible. They do this by changing the size of the pupil.
If there is no light, people cannot see. So how would we know where we are going?
Here's how: we would evolve over time to use our other senses ( smell, taste, touch and hearing) better, like animals with bad eyesight.
Our senses of smell and hearing would play the most important role.