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viktelen [127]
3 years ago
15

How much nicotine to kill half of humans who weighed 172 pounds

Biology
1 answer:
muminat3 years ago
6 0
I don’t know maybe 29 or I have no clue
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C.elegans is a model organism and was the first eukaryotic organism to have its genome sequenced. The free-living nematode is of
zaharov [31]

Answer:

C. a pre-synaptic neuron involved in egg-laying

Explanation:

Serotonin (5-HT) is a neurotransmitter, i.e., a molecule that binds to specific receptors and thus transmits signals from one pre-synaptic neuron to another target cell. In humans, serotonin is involved in many physiological functions including sleep, mood, emotions, appetite, digestion, etc. Moreover, <em>Caenorhabditis elegans</em> is a model organism widely used in neuroscience research in order to understand neuromodulation at the level of individual neurons. In <em>C. elegans,</em> serotonin modifies behavior by regulating neuronal excitability and synaptic efficiency. Moreover, also in <em>C. elegans,</em> it has been shown that serotonin induces egg-laying and also provides a feedback regulatory mechanism by inhibiting the activity of the pre-synaptic neurons that release it. In consequence, in this case, it is expected that serotonin rescues the loss of function of serotonin receptors required for egg-laying by providing a regulatory feedback loop that contributes to serotonin adaptation.

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3 years ago
Achondroplasia is a common form of dwarfism caused by an autosomal dominant mutation in the fibroblast growth factor receptor 3
ollegr [7]
<h2>Symptoms of Achondroplasia</h2>

Explanation:

  • Achondroplasia is caused about by a quality change (transformation) in the <em>FGFR3 gene</em>
  • The <em>FGFR3 quality</em> makes a protein called fibroblast development factor <em>receptor 3 </em>that is engaged with changing over ligament to bone
  • <em>FGFR3</em> is the main quality known to be related with <em>achondroplasia Achondroplasia</em> is acquired in an autosomal predominant example, which implies one duplicate of the adjusted quality in every cell is adequate to<em> cause the confusion</em>
  • In the rest of the cases, individuals with <em>achondroplasia </em>have acquired an adjusted <em>FGFR3 quality</em> from a couple of <em>affected parents</em>
5 0
3 years ago
Does natural selection act on individual or does it act on something else ?
elixir [45]

Answer:

huh

I don't know

8 0
3 years ago
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shrimp that live in the cold waters of Alaska will die if introduced into warm water one likely reason the shrimp do not survive
zysi [14]

...The enzymes in the shrimp denature when exposed to the higher heat. Enzymes denature at high heat. That's what kills you when you're fever is too high, your enzymes denature, which means they are deformed/ become the wrong shape. Since the activation sites on enzymes are very sensitive to shape, they wouldn't work anymore. The cold doesn't denature enzymes however. They don't work as quickly but they still retain their shape.
3 0
4 years ago
All of the following statements support the cell theory except-​
Ipatiy [6.2K]

Answer:

L

Explanation:

5 0
3 years ago
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