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TLS Online TPP Program

#Question id: 2179

Ion channels achieve selectivity in transport through all of the following mechanisms EXCEPT:

#Unit 2. Cellular Organization

  1. evolution from distinct and different parent proteins.

  2. divergent evolution from a single type of channel protein.

  3. low activation energy for selective passage of the dehydrated ion.

  4. use of P segments to form an ion selectivity filter.

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TLS Online TPP Program

#Question id: 14991

#Unit 4. Cell Communication and Cell Signaling

_____I________in the bone, _____II_______in the central nervous system, and _____III_______in the lung and ____IV________in the liver are tissue-specific examples of macrophages with these properties.
TLS Online TPP Program

#Question id: 10668

#Unit 10. Ecological Principles

Following table was shown life table where (S(x)= Live Individual , b(x) = Age specific fertility rate , g(x)= Death rate. What is NET reproductive rate?


               
TLS Online TPP Program

#Question id: 33360

#Unit 1. Molecules and their Interaction Relevant to Biology

a. HbS (sickle-cell Hb): substitutes a Val for a Glu on the surface
b. Hb Cowtown: eliminates an ion pair involved in T-state stabilization
c. Hb Memphis: substitutes one uncharged polar residue for another of similar size on the surface
d. Hb Bibba: substitutes a Pro for a Leu involved in an α helix

Which Hb variant least likely to cause pathological symptoms
TLS Online TPP Program

#Question id: 780

#Unit 1. Molecules and their Interaction Relevant to Biology

Drosha and Pasha:
TLS Online TPP Program

#Question id: 4593

#Unit 11. Evolution and Behavior

Which of Darwin's ideas had the strongest connection to his reading of Malthus's essay on human population growth?