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Semmy [17]
3 years ago
15

Place the following events of a reflex arc in the correct order: 1) motor neuron activation, 2) sensory neuron activation, 3) se

nsory receptor activation, 4) Information processing, 5) effector response.
Biology
1 answer:
VikaD [51]3 years ago
3 0

Answer:

The reflex arc follows this sequence of events

1. sensory receptor activation

2. sensory neuron activation

3.information processing

4. motor neuron activation

5. effector response

Explanation:

Reflex arc is the pathway of nerves during a reflex action. An example of a reflex arc is when we accidentally touch a hot object. First, the receptor in the skin detects a stimulus in this case the change in temperature. Second, the sensory neuron transmit the electrical impulses to the Central Nervous System for information processing. Then relay neurons connect sensory neurons to motor neurons. Third, motor neurons sends electrical impulses to an effector wherein the effector produces a response ( muscle contracts to move the hand away from the hot object. This happens in a split of seconds.  

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In a recessive disorder, a person will only have the disorder if they have one copy of the allele
Gnesinka [82]

Answer:

False

Explanation:

Since it's a recessive disorder that means the presence of the dominant allele will overshadow the recessive if it's present. Two recessive alleles have to be present in order for the person to have the disorder.

4 0
3 years ago
In a relatively small iguana population the allelic frequency is tracked for three generations. Webbing is a recessive allele; n
kakasveta [241]

Answer:

This is an example of founder effect.

Explanation:

Founder effect may be illustrated as the loss of genetic variation in a novel small population originated from the original population. The concept was initially presented by Ernst Mayr. It can be seen that genetic diversity has got reduced in the population of iguana due to the result of the flood that has washed all the iguana without webbed feet into the sea.  

The new population has got inclined from the small iguana population. Thus, the iguana population is regarded as an illustration of the founder effect.  

5 0
3 years ago
Read 2 more answers
Answer this please thanks!
laila [671]
1. Anaphase
2. d
3. B
4 0
3 years ago
Cocaine exerts its pleasurable effects on the brain by:
Semenov [28]

It disconnects the brain's dopamine system.

Further explanation

Cocaine

Cocaine is a capably addictive stimulant medication. For a great many years, individuals in South America have bitten and ingested coca leaves which is source of cocaine, for their stimulant effects. In the mid-1900s, refined cocaine was the primary dynamic fixing in numerous tonics and elixirs created to treat a wide assortment of diseases and was even a fixing in the early plans of Coca-Cola. Prior to the advancement of manufactured specialists utilized cocaine for the relief of pain. However, examine has since demonstrated that cocaine is an effectively addictive substance that can change cerebrum structure and capacity whenever utilized over and over.

Functions of cocaine

It shows very quickly effect after a solitary portion and vanish inside a couple of minutes to 60 minutes. Limited quantities of cocaine for the most part make the person feel euphoric, enthusiastic, loquacious, rationally caution, and easily affected to sight, sound, and contact. The medication can likewise briefly diminish the requirement for sustenance and sleep. Some clients find that cocaine encourages them perform straightforward physical and scholarly assignments all the more rapidly, in spite of the fact that others experience the contrary impact.

Effect of cocaine on dopamine

Cocaine particles block the dopamine transporters which shut down the neuron's capacity to take-up the additional dopamine inside the synaptic parted. This outcomes in expanded degrees of the synapse dopamine present in the extracellular spaces among these neurons.

Answer details

Subject: Biology

Level: College

Key words

  • Cocaine
  • Functions of cocaine
  • Effect of cocaine on dopamine

Learn more to evaluate

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7 0
3 years ago
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What other structures of the cytoskeleton would show the same pattern of microtubules as a flagellum
pashok25 [27]

Answer:

<u>Cilia</u>

Explanation:

Cilia and flagellum are made up of microtubules.

Cytoskeletal filaments are structures which allow movement. In cilia and flagella, the cytoskeletal filaments are present in the form of microtubules and the primary work of these structures is to facilitate in movement.

Cilia is also present in mammals to facilitate the movement of fluids in cells.

Structurally, there is no difference between cilia and flagella. The only difference between cilia and flagella is in their lengths.

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3 years ago
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