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TLS Online TPP Program

#Question id: 5029

Which of the following was the least likely factor causing the Cambrian explosion?

#Unit 11. Evolution and Behavior

  1. the emergence of predator-prey relationships between animals

  2. the accumulation of diverse adaptations, such as shells and different modes of locomotion

  3. the movement of animals onto land

  4. the evolution of Hox genes that controlled development

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TLS Online TPP Program

#Question id: 1861

#Unit 4. Cell Communication and Cell Signaling

Paroxysmal nocturnal hemoglobulinuria results from deficiency in:
TLS Online TPP Program

#Question id: 8920

#Unit 9. Diversity of Life Forms

Almost all of the major animal body plans seen today appeared in the fossil record over 500 million years ago at the beginning of the
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: 20990

#Unit 12. Applied Biology

Anaerobic conversion of toluene to which compound occurs in the anaerobic zone of a crude oil-contaminated aquifer.
TLS Online TPP Program

#Question id: 2932

#Unit 2. Cellular Organization

Which of the following is targeted by the SCF complex?