
Concept explainers
a.
To determine: The number of doublings that will take place before the normal cells cease to divide and its consistency with the telomerase hypothesis.
Introduction: Cancer can be of different types depending upon the type of cells, organ affected, and stage. The spreading of cancer to other places in the body is called metastasis. Cancer can be defined as the uncontrolled growth and proliferation of cells that compete with the normal cells for nutrition, space and eventually cause the death of normal cells
b.
To determine: The number of doubling that can take place in telomerase plus cell lines after which they fail to divide.
Introduction: The loss of telomere DNA restrains the ability of human cells to proliferate. The telomeres are present at the end of the chromosomes and contain repetitive DNA sequences. These sequences are shortened with time, and the telomeres length reduces, which takes place with aging.

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Chapter 8 Solutions
The Living World
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- please fill in missing parts , thank youarrow_forwardplease draw in the answers, thank youarrow_forwarda. On this first grid, assume that the DNA and RNA templates are read left to right. DNA DNA mRNA codon tRNA anticodon polypeptide _strand strand C с A T G A U G C A TRP b. Now do this AGAIN assuming that the DNA and RNA templates are read right to left. DNA DNA strand strand C mRNA codon tRNA anticodon polypeptide 0 A T G A U G с A TRParrow_forward
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