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Anastaziya [24]
2 years ago
6

Why is ribosomal rna especially useful for the study of phylogenetic relationships? why is ribosomal rna especially useful for t

he study of phylogenetic relationships? it is extremely short. it is highly conserved. it is only found in some species, helping to distinguish them from others. it is highly variable?
Biology
1 answer:
defon2 years ago
8 0
<span>The ribosomal RNA is especially useful for the study of phylogenetic relationships because ribosomal RNA are highly conserved.

It is very less that is why it is easy to compare. Ribosomal ribonucleic acid is the RNA component of ribosome which is essential for protein synthesis to all living organisms.

rRNA is widely used for the purpose of working out evolutionary relationships which are among organisms. </span>
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When voltage-gated sodium ion channels are inactivated, the neuron is _________________. in the absolute refractory period below
Ymorist [56]

Answer:

depolarizing

Explanation:

According to my research on studies by different medical professionals, I can say that based on the information provided within the question the neuron is depolarizing. This is what happens when voltage-gated sodium ion channels are inactivated causing an increas in the neuron's membrane conductance for sodium ions.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

5 0
2 years ago
The parasympathetic nervous system is characterized by ____ preganglionic neurons and ____ postganglionic neurons.
soldier1979 [14.2K]
The parasympathetic nervous system is characterized by the location preganglionic neurons and the short postganglionic axons near the organs they innervate. The preganglionic neurons would originate in the spinal cord or the brainstem while the postganglionic neurons would lie outside the CNS.
6 0
2 years ago
Sleep may decrease activity of neurons associated with ________, suggesting an important cognitive benefit of sleep
lakkis [162]
I think that it might be stress maybe.
4 0
2 years ago
Describe your DNA model. Which part do the straws represent? The pushpins? The paper clips and the black dots you made with the
Fynjy0 [20]
<h2>Answer 1 with Explanation</h2>

The DNA model represents the genetic code that defines all the characteristics of a living thing and it is made up molecules called nucleotides. Each nucleotide contains and represents a phosphate group, a nitrogen base, and a sugar group. Two long strands are formed by Nucleotides attached together to create a structure called double helix which looks like a ladder, the sides would be made up of sugar and phosphate molecules while the rungs would be the base. The straws represent the sugar-phosphate backbone which forms the structural framework of nucleic acids. It is composed of alternating sugar and phosphate groups.  

<h2>Answer 2 with Explanation</h2>

The push pins re-presence nitrogen-containing base is an essential molecule with a nitrogen atom having the chemical features of a field. The principal biological purpose of a nitrogenous base is to bond nucleic acids collectively. A pushpin owes its essential characteristics to a solitary couple of electrons of a nitrogen atom. It is assigned as the derivatives pair of parent compounds.

<h2>Answer 3 with Explanation</h2>

The paper clips represent ‘five prime’ and ‘three prime’ which indicate the number of carbons in the DNA’s sugar backbone. These two are the distinctive ends of the nucleic acids. The black dots represent the bonds of sugar and phosphate which make up the nucleotides and show the genetic code. These bonds have strong covalent bonds that keep the bonds attached together firmly.

8 0
2 years ago
The transport of molecules of a particular solute from inside an animal cell across the cell membrane to the extracellular fluid
Leona [35]

Answer:

the concentration of the solute is lower inside the cell than outside it

Explanation:

This question depicts the process of ACTIVE TRANSPORT, which is the movement of a substance against concentration gradient, hence, requires energy input (ATP) to occur. In this case, transporting a solute from inside an animal cell to the extracellular fluid across the cell membrane always requires energy.

This is because the concentration of solute inside the cell is much lower than that of the extracellular fluid, hence, to move the solutes against this concentration gradient (low to high), energy in form of ATP is required.

6 0
2 years ago
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