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Rudiy27
3 years ago
11

What is the term used to describe the minimum level of stimulus required to activate a neuron?

Biology
1 answer:
Alborosie3 years ago
7 0

Answer: The correct answer is -

b. Threshold.

Explanation:

Threshold can be described as minimum voltage of a memrane (of neuron or muscle cell) that is required to reach an excited state of cell during a depolarization) so as to produce an action potential.

Voltage-gated channels are activated at the threshold voltage, .

For example - Threshold level of neuron is - 55mV, which means it fires action potential at this level so that information is transferred to another neuron.

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How does an impulse move during reflex arc? *
TiliK225 [7]

Answer:

Reflex arcs

Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Relay neurons connect sensory neurons to motor neurons. Motor neuron sends electrical impulses to an effector. Effector produces a response (muscle contracts to move hand away).

4 0
3 years ago
Two organisms, AABBCCDDEE and aabbccddee, are mated to produce an F1 that is self-fertilized to produce F2. If the capital lette
Galina-37 [17]

Answer:

a) How many genotypes will occur in F2

--The genotypes would be- AA Aa aa BB Bb bb CC Cc cc DD Dd dd EE Ee ee (15 genotypes)

Reason-

This is because, after crossing the parents, the F1 generation would all be Heterozygous dominant since one parent is homozygous dominant, while the other is homozygous recessive.

b) 25% of all F2 genotypes would be recessive across the 5 loci

Reason-

This is because each loci would produce only a 25% chance for a recessive trait, which would results to a general probability of 25% also.

c) Yes i would change my answer in A and B if the parent cross was- AABBCCDDEE X aaBBccDDEE

d) Yes i would change my answer in A and B if the parent cross was- AABBCCDDEE X aabbccddEE

4 0
3 years ago
According to the principle of _______, a change in one species in a community results in a change in another.
oee [108]

The correct answer for above statement is:

<h3>A. coevolution</h3><h3>Explanation:</h3>

Coevolution is the method by which two or extra kinds emerge in tandem by exercising selection forces on each other. Coevolution happens when two or more species reciprocally influence each other's development.

6 0
3 years ago
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The marine biome _______. a. is a large ecosystem, but not larger than some terrestrial ecosystems b. is characterized by four d
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Answer:

B) is characterized by four different zones

Explanation:

edge 2020

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A diagnostic procedure that involves removing a tissue sample from a patient.
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Answer:

b. biopsy

Hope this helps!

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3 years ago
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