Practice Questions

TLS Online TPP Program

#Question id: 2520

During the course of a muscle twitch (a contraction due to a single action potential), when is the free calcium concentration of the muscle cytoplasm highest?

#Unit 2. Cellular Organization

milliseconds before the T tubule undergoes an action potential
after the T tubule undergoes an action potential but before the muscle generates tension
at the height of the tension generated by the muscle
at the end of the twitch, after the muscle has relaxed

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TLS Online TPP Program

#Question id: 12925

#Unit 13. Methods in Biology

Another name of TaqMan assay is ____

TLS Online TPP Program

#Question id: 4005

#Unit 3. Fundamental Processes

Which does not apply to the post-transcriptional processing of ribosomal RNA?

TLS Online TPP Program

#Question id: 15781

#Unit 5. Developmental Biology

Chemical regulation of stem cells takes the form of secreted proteins from surrounding cells that influence stem cell states and progenitor differentiation through endocrine, paracrine, or juxtacrine mechanisms. These signaling factors:

TLS Online TPP Program

#Question id: 14729

#Unit 13. Methods in Biology

The figure below shows the network connecting cities A, B, C, D, E and F. The arrows indicate permissible directions of travel. If Deepak from city A wants to visit city F, what is the probability he will pass through city C

TLS Online TPP Program

#Question id: 3430

#Unit 11. Evolution and Behavior

The proximate causes of behavior are interactions with the environment, but behavior is ultimately shaped by