Practice Questions

TLS Online TPP Program

#Question id: 7155

What does it tell us about aging that cells from different organisms are capable of a fixed number of divisions in culture, and that number of divisions reflects the relative life-span of the organism?

#Unit 5. Developmental Biology

The cells from these different organisms are not all equally adapted to growth in culture.
In each organism, the cells seem to be capable of a genetically determined number of divisions, after which the organism undergoes senescence and dies.
Cells growing in culture live for the same number of years that the organism from which they are derived would be expected to live, indicating a genetically determined life span.
The conditions cells encounter in culture lead to oxidative damage which reflects the kind of damage that normally leads to aging in the organism.

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TLS Online TPP Program

#Question id: 26549

#Unit 3. Fundamental Processes

Which of the following is destabilizing element in eukaryotic mRNA

TLS Online TPP Program

#Question id: 31279

#Unit 2. Cellular Organization

In which phase Cdh1 become phosphorylated, and dissociates from APC/C, and APC/C becomes inactive?

TLS Online TPP Program

#Question id: 304

#Unit 1. Molecules and their Interaction Relevant to Biology

As compared to covalent compounds electrovalent compounds generally possess ___________

TLS Online TPP Program

#Question id: 33241

#Unit 1. Molecules and their Interaction Relevant to Biology

Carbonic anhydrase contains an essential Zn²⁺ ion which is involved in

TLS Online TPP Program

#Question id: 4719

#Unit 8. Inheritance Biology

When a trait exhibits complete co-dominance rather than complete dominance, a cross between heterozygote results deviation of following;