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harina [27]
3 years ago
5

The central nervous system contains _____, which is the center of the nervous system, and _____, which coordinates simple reflex

es.
Biology
2 answers:
yKpoI14uk [10]3 years ago
4 0

Answer:

The central nervous system contains the brain, which is the center of the nervous system, and the spinal cord, which coordinates simple reflexes.

kati45 [8]3 years ago
3 0

Answer:

First blank : the brain

Second blank : the spinal cord

Explanation:

Just completed the assignment on edge : )

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Besides filtering blood for foreign materials and phagocytosis of old, defective erythrocytes, the spleen is also involved in wh
Rudiy27
<h2>Functions of spleen</h2>

Explanation:

The major functions of spleen besides filtering the blood of foreign materials and phagocytosis of old defective erythrocytes are:

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Which type of macromolecule is made up of subunits that are called amino acids?
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Oxidative damage to DNA can often result in the alteration of a single nucleotide.
Harman [31]

Answer:

Repair mechanism for base cleavage (BER)

Explanation:

Repair by base cleavage (BER)

The altered bases are specifically recognized by glycosylases and removed, generating an AP site. The hole is filled by a DNA polymerase that takes the healthy strand as a template. This system arises not only by exposure to external agents, but also by the cell's own activity.

In case of damage in more than one nucleotide, repair by nucleotide excision (NER) is performed.

Nucleotide excision repair (NER)

The damaged area is recognized by UvrA and B, then A and B separate and UvrC enters which forms a complex with endonuclease activity with B. This enzyme cuts the T-dimer and the gap is filled by a DNA polymerase. There is also the TC-NER system (transcription-coupled nucleotide repair system). The alteration of these mechanisms gives rise to diseases such as: Xeroderma pigmentosum, Trichotiodystrophy or Cockayne Syndrome

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