Practice Questions

TLS Online TPP Program

#Question id: 10233

Which of the following statements is the most appropriate define character displacement?

#10. Ecological Principles

Two related species depending on the same prey species avoid competition by feeding at different times of the day.
The body sizes of two related species are very similar when they are allopatric but in geographical areas of sympatric, one species is significantly smaller than the other
The food niche of a species is generally wider in the absence of competing species than in their presence.
Closely related species can coexist if their densities are regulated by a predator

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TLS Online TPP Program

#Question id: 10970

#7. System Physiology – Animal

A mother of blood type A+ who has always been perfectly healthy just delivered her second child. The father is of blood group O−. Knowing that the child is of blood group O− (O, Rh−), what would you expect to find in this child?

TLS Online TPP Program

#Question id: 685

#1. Molecules and their Interaction Relevant to Biology

A protein has a molecular weight of 5600 daltons; its subunits are about 1960 daltons. There are ________ protein chains per oligomer.

TLS Online TPP Program

#Question id: 2290

#2. Cellular Organization

The cytoskeleton includes all of the following except

TLS Online TPP Program

#Question id: 6957

#5. Developmental Biology

The effect of grafting an extra piece of notochord into a dorsal position adjacent to pre-somitic mesoderm is