Practice Questions

TLS Online TPP Program

#Question id: 12587

The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that

#10. Ecological Principles

Tropical communities are younger.
Tropical regions generally have more available water and higher levels of solar radiation.
Higher temperatures cause more rapid speciation.
Biodiversity increases as evapotranspiration decreases.

More Questions

#Question id: 2952

#2. Cellular Organization

Throughout interphase,.. ......... are synthesized at a relatively constant rate, whereas ............ are synthesized only during the S phase.

#Question id: 2953

#2. Cellular Organization

If a cell in the G1 phase is fused with a cell in the S phase, then

#Question id: 2954

#2. Cellular Organization

Cyclin concentrations are highest during which periods of the cell cycle?

#Question id: 2955

#2. Cellular Organization

Cyclin is to MPF as ............ is to cyclin-dependent kinases.

#Question id: 2956

#2. Cellular Organization

The product of the cdc2 gene is

#Question id: 2958

#2. Cellular Organization

Which of the following structures is not a feature of the mitotic chromosome?