A nuclease (also archaically known as nucleodepolymerase or polynucleotidase) is an enzyme capable of cleaving the phosphodiester bonds between nucleotides of nucleic acids. Nucleases variously effect single and double stranded breaks in their target molecules. In living organisms, they are essential machinery for many aspects of DNA repair. Defects in certain nucleases can cause genetic instability or immunodeficiency.[1] Nucleases are also extensively used in molecular cloning.[2]
Depiction of the restriction enzyme (endonuclease) HindIII cleaving a double-stranded DNA molecule at a valid restriction site (5'–A|AGCTT–3').
There are two primary classifications based on the locus of activity. Exonucleases digest nucleic acids from the ends. Endonucleases act on regions in the middle of target molecules. They are further subcategorized as deoxyribonucleases and ribonucleases. The former acts on DNA, the latter on RNA.[2]
Bacteria are prokaryotes and microscopic in size, and they lack a nucleus. DNA is present in the cytoplasm. They do not have membrane-bound organelles.
<h3>What is the size of bacteria?</h3>
- The shapes and sizes of bacteria are extremely diverse.
- The majority of bacteria have a 2–8цm length and a diameter of 0.2-2цm.
- Eukaryotic cells are around ten times larger than bacterial cells.
<h3>What is the difference between prokaryotic and eukaryotic cells?</h3>
- Prokaryotic cells are primitive cells that are primarily present in unicellular organisms; they lack a nucleus but contain a small amount of DNA and do not have membrane-bound organelles.
- In contrast, eukaryotic cells are present in all types of multicellular organisms, including plant and animal cells.
- It possesses a nucleus. All cell organelles are membrane-bound.
- Because they lack a nucleus and other cell organelles and are single-celled microorganisms, they are categorized as prokaryotic organisms.
Bacteria are tiny organisms. They are 200 micrometers in diameter. They do not possess membrane-bound organelles.
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Salt is better correct answer
If the dna triplets is atg-cgt, the trna anticodons are Uac-gca.
<h3>Are codons triplets of tRNA?</h3>
The triplet of bases that is complementary to a codon is called an anti-codon the triplet in the mRNA is called the codon and the triplet in the tRNA is called the anti-codon.
Thus, option "D" is correct.
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