Practice Questions

TLS Online TPP Program

#Question id: 12327

Which of the following is the most accepted hypothesis as to why invasive species take over communities into which they have been introduced?

#Unit 10. Ecological Principles

Invasive species are more aggressive than natives in competing for the limited resources of the environment.
Invasive species are not held in check by the predators and agents of disease that have always been in place for the natives.
Humans always select which species will outcompete the nuisance native species.
Invasive species have a higher reproductive potential than native species.

More Questions

TLS Online TPP Program

#Question id: 7049

#Unit 5. Developmental Biology

Invaginating cells during amphibian gastrulation, in which the main body of each cell is displaced toward the inside of the embryo while maintaining contact with the outside surface by way of a slender neck-

TLS Online TPP Program

#Question id: 169

#Unit 1. Molecules and their Interaction Relevant to Biology

An octapeptide composed of four repeating glycylalanyl units has:

TLS Online TPP Program

#Question id: 11738

#Unit 6. System Physiology – Plant

The ribotide and riboside forms of trans-zeatin can be interconverted, and free trans-zeatin can be formed from the ribotide by the

TLS Online TPP Program

#Question id: 28555

#Unit 5. Developmental Biology

During cell aggregation and differentiation Newly intracellularly activated genes are___