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Bess [88]
3 years ago
5

How can Natural selection account for the long snout of an anteater?

Biology
1 answer:
maxonik [38]3 years ago
6 0
Yes because the anteaters without the long snout would not be able to reach the ants to get the nutrients and die off unlike the anteater with the long snout
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Which of the following are among the most common second messengers?
frosja888 [35]

Answer:

The correct answer would be calcium ion and cAMP.

Secondary messengers refers to the intracellular signaling molecules which pass the signals from the receptors located on the surface of the cell to the target molecule present within the cell.

The secondary messengers can be classified into three major class:

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Hence, from the given options, calcium ion and cAMP would make the correct choice.

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3 years ago
In the marine mollusk, Aplysia, serotonin binds to a G-protein-coupled receptor and activates a Gs subunit. The resulting activa
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The serotonin binds to a G-protein -coupled receptor and activates a G-subunit . This results in activation of PKA and closing of the potassium channels. This will subsequently decrease the influx of potassium ions into the cell, and lead to depolarization of the cell. This changes the membrane potential of the cell.

Aplysia are sea slugs which fall under the category of mollusks. Serotonin is a hormone which is responsible for the transfer of electrical signals from the brain to different parts. In this particular mollusk, serotonin was studied to find that it is an essential neurotransmitter that is responsible for the maintenance of synaptic plasticity in the neurons. Synaptic plasticity is the feature which is essential for the communication of neurons. This is the modification which occurs at the synapses during the transmission of synapses. Without this activity, the transmission of signals would be impossible.

Learn more about depolarization here-

brainly.com/question/8438145

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4 0
2 years ago
Unhealthy ecosystems are created by
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Removal of plants, and invasive species.

Explanation:

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The term apomorphy means a specialized or derived character state; plesiomorphy refers to a primitive or ancestral trait. An same as autapomorphy is a derived trait that is unique to one group, while a same as synapomorphy is a derived trait shared by two or more groups.

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