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laila [671]
2 years ago
5

An animal without a body cavity is called

Biology
2 answers:
pantera1 [17]2 years ago
6 0
Answer c is correct trust me
vfiekz [6]2 years ago
5 0
An animal without the body cavity is called acoelomic. .......
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One reason that regulation of gene expression is important is that it saves energy and materials from being used when they are n
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Answer:Transcriptional Regulation  

Explanation:

Eukaryotic gene expression can be regulated during the time of transcription and RNA processing, which takes place in the nucleus of the cell and then during the time of protein translation in the cytoplasm.

Further regulation is being carried during the time of post transnational modification. The conservation of energy is very important because it saves the overall energy and space in the body.

Hence, the most important point for the regulation would be transcriptional regulation.

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What nucleotide pairs with with T?with C?
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Im pretty sure its guanine 
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When is the generation of an action potential impossible no matter the strength of the stimulus?
ANTONII [103]
The right answer is <span>Refractory period.

At the moment when the action potential is emitted, the fiber being depolarized, it is impossible to depolarize it again. It is, therefore, necessary to wait until the membrane potential returns to a value below the critical threshold in order to be able to excite it again. We are thus led to distinguish two periods that characterize its excitability.
An absolute refractory period: during which any stimulation, even supraliminal, is ineffective since the fiber is already depolarized.
A relative refractory period: during which a second action potential can be omitted provided that the depolarization produced by the excitation reaches the critical threshold, which implies that it is more important since the value of the resting potential has not been restored yet.</span>
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3 years ago
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2 years ago
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What series of words describes lengths of geologic time from longest to shortest
AleksandrR [38]

Answer:

The correct answer would be eon-era-period. i hope this helps!

Explanation:

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