TLS Online TPP Program

#Question id: 24658


Each monomer of aquaporin1 has six transmembrane helical segments and two shorter helices, both of which contain the sequence:

#Unit 2. Cellular Organization
  1. Asn–Pro–Val
  2. Asp–Pro–Ala
  3. Asn–Gly–Ala
  4. Asn–Pro–Ala
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TLS Online TPP Program

#Question id: 12260

#Unit 10. Ecological Principles

Chemical competition among organisms is referred to as __________. 

TLS Online TPP Program

#Question id: 32577

#Unit 2. Cellular Organization

Which of the following binds to and stabilizes microtubules & causing a net increase in tubulin polymerization?

TLS Online TPP Program

#Question id: 11363

#Unit 10. Ecological Principles

Competition among individuals belonging to the same species is referred to as _________ competition.

TLS Online TPP Program

#Question id: 3499

#Unit 11. Evolution and Behavior

In some jacana species, males take care of the eggs and young, and females compete among themselves for territories that contain one to several males. Female jacanas are significantly larger than males. Which of these statements would you predict to be true of this bird species?

a. Male jacana fitness is primarily limited by ability to take care of eggs and raise young.

b. Female jacana fitness is limited by the number of males in her territory with which a female mates.

c. Variation in reproductive success should be greater in male jacanas than in females.

d. Variation in reproductive success should be greater in female jacanas than in males.

e. Males and females have equal variation in reproductive success.

TLS Online TPP Program

#Question id: 4995

#Unit 11. Evolution and Behavior

It has been found that certain proteins of the complex motor that drives bacterial flagella are modified versions of proteins that had previously belonged to plasma membrane pumps. This is evidence in support of the claim that