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Home Q & A Board Biology-Related Homework Help General Biology
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JOJO JOJO
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12 years ago
Why there's NO telomerase in bacterial cells?
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#1
Educator
12 years ago
Because there are no telomeres, the DNA is circular.

Let me know if you need more of an explanation. Slight Smile
JOJO Author
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#2
12 years ago
Could you go into more detail. Please.
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#3
Educator
12 years ago
Telomerase is the enzyme that regenerates telomeres. Telomeres form the end pieces of our LINEAR DNA strands in chromosomes. After each DNA replication, the telomeres are slightly lost or degraded. Bacteria don't have linear DNA, they have a continuous piece of circular DNA. Therefore, there is no need for telomerase because they don't have this region in there DNA.
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#4
12 years ago
telomerase's job is to lengthen telomere after loss durring replication of our linear chromosome. The loss occurs on the lagging strand due to the need for an RNA primer, and it's subsequent replacement.  circular nature of bacterial chromosome provides a place for machinery to bind ALWAYS => no shortening=> no need for telomere.
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