How does the degradation of telomeres result in cellular aging? What will be an ideal response?
Concepts to Consider: Telomeres, which are at the ends of chromosomes, degrade with
every new cell division. As a result, with time, the chromosome itself may degrade, thus
resulting in faulty gene expression or disruption of the cell cycle. Either of these events leads
to unhealthy cells that may die or be targeted for destruction by the immune system.
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Migration is a key evolution mechanism by which microevolution occurs
Indicate whether the statement is true or false
A hypothetical "microbullet" shot through a phospholipid bilayer will pass the bilayer components in which order?
a. tail ? tail ? head ? head b. head ? tail ? tail ? head c. head ? tail ? head ? tail d. head ? head ? tail ? tail e. tail ? head ? tail ? head
Approximately how often does a period of REM sleep occur?
a. every 30 minutes b. every 60 minutes c. every 90 minutes d. every 120 minutes e. once per night
In a bacterial cross of an Hfr donor a+b+ with a recipient F– a–b–, what would be a possible recombinant?
What will be an ideal response?