2. Which of the following are abiotic factors in an ecosystem? (Select all that apply.)

Neurons in the parasympathetic pathway use which neurotransmitters?

Kay [80]

<h2>Acetylcholine</h2>

Explanation:

Acetylcholine is a chemical that is found between the nerve synapses, or gaps, between nerve cells. When activated, it causes the contraction of skeletal muscles and activates glandular functions in the endocrine system. Think of acetylcholine as a mailperson; residents cannot receive their mail until he or she comes and delivers it to the mailbox. Like mailpersons who deliver the mail and move on to the next house, acetylcholine acts quickly and does not hang around. As a result, acetylcholine is rapidly broken down by another chemical substance called cholinesterase.
Acetylcholine was the first neurotransmitter scientists discovered, as well as the most abundant neurotransmitter in the body. A neurotransmitter is a chemical that is released by a neuron, or nerve cell, that sends a signal to another neuron across a synapse. The neurotransmitter binds to receptors to affect how the signal is received. The purpose of the neurotransmitter is to either amplify or inhibit the signals sent between the neurons.
Acetylcholine plays an important role in the signal of muscle movement, sensation of pain, learning and memory formation, the regulation of the endocrine system and rapid eye movement (REM) sleep cycles.

5 0

3 years ago

The formation of the fertilization envelope (slow-block to polyspermy) requires an increase in the availability of _____.

jok3333 [9.3K]

<span>The formation of the fertilization envelope (slow-block to polyspermy) requires an increase in the availability of </span>calcium ions.

Slow-block to polyspermy is also called cortical reaction. In this reaction, the sperm will be permanently blocked by cortical granules. The release of calcium ion will trigger this reaction.

7 0

3 years ago

Describe how the diversity of an ecosystem can change over time. Give example of the disturbance in your response and whether th

Salsk061 [2.6K]

Invasive species is the easiest way to answer this, with invasive species the diversity will likely decrease

4 0

3 years ago

What is the difference between a dominant and recessive trait? How are each trait's symbolozed?

velikii [3]

The difference between a dominant trait and a recessive trait is that the dominant trait must have one copy of each from two different parent
Example: Brown Hair=H
Light hair=h
Hh is dominant because this is of a copy of each from two parents
A recessive trait must have two same copies coming from the same two parents
Example: HH

4 0

3 years ago

Which of these events is caused by the stapes pushing against membrane covering the oval window?A The pressure change causes the

Nezavi [6.7K]

Answer:

The correct answer is option C "The pressure change causes the organ of Corti to vibrate vertically".

Explanation:

The organ of Corti is an important structure for auditory perception that acts as a receptor organ for hearing. The organ of Corti is located in the mammalian cochlea and it allows for the transduction of auditory signals into nerve impulses according to the vibrations that are received from external sources. If the receiving sounds comes from the stapes pushing against membrane covering the oval window, the pressure change will causes the organ of Corti to vibrate vertically. Stimulus from membrane covering the oval window are sent to the organ of Corti, which responds by vibrating vertically.

7 0

3 years ago