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TLS Online TPP Program

#Question id: 3778

Which of the following effects might be caused by reduced or very little active telomerase activity?

#Unit 3. Fundamental Processes

  1. Cells may become cancerous.

  2. Telomere lengthens in germ cells.

  3. Cells age and begin to lose function.

  4. Cells maintain normal functioning.

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TLS Online TPP Program

#Question id: 353

#Unit 1. Molecules and their Interaction Relevant to Biology

Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?
TLS Online TPP Program

#Question id: 4715

#Unit 11. Evolution and Behavior

Claytonia virginica is a woodland spring herb with flowers that vary from white, to pale pink, to bright pink. Slugs prefer to eat pink-flowering over white-flowering plants (due to chemical differences between the two), and plants experiencing severe herbivory are more likely to die. The bees that pollinate this plant also prefer pink to white flowers, so that Claytonia with pink flowers have greater relative fruit set than Claytonia with white flowers. A researcher observes that the percentage of different flower colors remains stable in the study population from year to year. Given no other information, if the researcher removes all slugs from the study population, what do you expect to happen to the distribution of flower colors in the population over time?
TLS Online TPP Program

#Question id: 9265

#Unit 9. Diversity of Life Forms

To apply parsimony to constructing a phylogenetic tree,
TLS Online TPP Program

#Question id: 12513

#Unit 7. System Physiology – Animal

A 26-year-old construction worker is brought to the emergency room with a change in mental status after working a 10-hour shift on a hot summer day (average outside temperature was 97°F). The man had been sweating profusely during the day but did not drink fluids. He has a fever of 102°F, heart rate of 140 beats/min, and blood pressure of 100/55 mm Hg in the supine position. On examination, he has no perspiration, appears to have dry mucous membranes, and is poorly oriented to person, place, and time. Assuming that his kidneys were normal yesterday, which of the following sets of hormone levels describes his condition, compared with normal?
TLS Online TPP Program

#Question id: 21001

#Unit 12. Applied Biology

Bioremediation of inorganic contaminants is primarily based on suitable