Practice Questions

TLS Online TPP Program

#Question id: 12113

In belding’s ground squirrels, it is mostly the females that behave altruistically by sounding alarm calls. What is the likely reason for this distinction?

#Unit 10. Ecological Principles

Males have smaller vocal cords and are less likely to make sounds.
Females invest more in foraging and food stores, so they are more defensive.
Females settle in the area in which they were born, so the calling females are warning kin.
The sex ratio is biased.

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TLS Online TPP Program

#Question id: 8287

#Unit 9. Diversity of Life Forms

The following phylogeny shows six living species (a-f) and five ancestral (now extinct) species (#1-5). If the phylogeny had been developed on the basis of similarities in bone structure, which of the following predictions would you make in terms of the structure of a particular enzyme?

TLS Online TPP Program

#Question id: 1122

#Unit 4. Cell Communication and Cell Signaling

In endocrine signaling, the signaling molecule.

TLS Online TPP Program

#Question id: 14833

#Unit 2. Cellular Organization

The pneumococcal vaccine is directed against the

TLS Online TPP Program

#Question id: 33312

#Unit 1. Molecules and their Interaction Relevant to Biology

Identify the plot shown