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TLS Online TPP Program

#Question id: 1509

Cells that are infected, damaged, or have reached the end of their functional life span often undergo "programmed cell death." This controlled cell suicide is called apoptosis. Select the appropriate description of this event on a cell's life cycle.

#Unit 4. Cell Communication and Cell Signaling

  1. Apoptosis is regulated by cell surface receptors that signal when a cell has reached its density-dependent limits.

  2. During apoptosis, dying cells leak out their contents, including digestive enzymes that also destroy healthy cells.

  3. During apoptosis, cellular agents chop up the DNA and fragment the organelles and other cytoplasmic components of a cell.

  4. Each cell organelle has protein signals that initiate the breakdown of the organelle's components, which leads to cell death.

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TLS Online TPP Program

#Question id: 28707

#Unit 2. Cellular Organization

Which of the following is a major site of carbohydrate synthesis?
TLS Online TPP Program

#Question id: 12364

#Unit 10. Ecological Principles

Which of the following populations is capable of increasing more rapidly than the others?
TLS Online TPP Program

#Question id: 13170

#Unit 10. Ecological Principles

Which of the following events might you predict to occur if the tilt of Earth's axis relative to its plane of orbit was increased 33.5 degrees?
TLS Online TPP Program

#Question id: 12865

#General Aptitude

The radius of the incircle of a triangle is 2 cm. If the area of the triangle is 6 cm2, then its perimeter is
TLS Online TPP Program

#Question id: 11270

#Unit 10. Ecological Principles

Consumption efficiency is the proportion of production at one trophic level that is eaten by, or ingested, by the next trophic level which of the following is correct statement?

A. Consumption efficiencies of herbivore is higher in ocean than grassland

B. In aquatic ecosystems, production efficiencies of herbivore are greater than carnivores

C. Assimilation efficiencies for carnivores are typically higher than those of herbivores

D. Assimilation efficiency depends on the quality of food eaten and the physiological efficiency of the consumer