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#Question id: 5001

Fossil evidence indicates that several kinds of flightless dinosaurs possessed feathers. If some of these feather-bearing dinosaurs incubated clutches of eggs in carefully constructed nests, this might be evidence supporting the claim that

#Unit 11. Evolution and Behavior

dinosaurs were as fully endothermal (warm-blooded) as modern birds and mammals.
their feathers originally served as insulation, and only later became flight surfaces.
the earliest reptiles could fly, and the feathers of flightless dinosaurs were vestigial flight surfaces.
the feathers were plucked from the bodies of other adults to provide nest-building materials.

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TLS Online TPP Program

#Question id: 15419

#Unit 5. Developmental Biology

Doris Taylor’s research group used detergents to remove all the cells from a cadaveric rat heart, which leaves behind the natural extracellular matrix. An extracellular matrix scaffold can promote the differentiation and rebuilding of a beating heart. The researchers then infused this ECM scaffold with cardiomyocytes. Now these cells differentiated and organized into a functionally contracting “recellularized” heart. Which of the following statement is correct?

TLS Online TPP Program

#Question id: 4135

#Unit 3. Fundamental Processes

In the “activation” of an amino acid for protein synthesis:

TLS Online TPP Program

#Question id: 483

#Unit 1. Molecules and their Interaction Relevant to Biology

Glycogen is converted to monosaccharide units by:

TLS Online TPP Program

#Question id: 19162

#Unit 13. Methods in Biology

Which of the following is not a gel filtration chromatography?

TLS Online TPP Program

#Question id: 11360

#Unit 10. Ecological Principles

Which of the following can contribute to the numerical response of a predator?