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TLS Online TPP Program

#Question id: 10966

A couple requests blood typing of their 2-year-old child (father AB, Rh-negative; mother B, Rhnegative). Results of hemagglutination assays of the child’s blood are shown in the next figure. Which of the following conclusions concerning the child’s parentage is valid?


#Unit 7. System Physiology – Animal
  1. The child could be the natural offspring of this couple
  2. The mother could be the natural mother, but the father could not be the natural father
  3. The father could be the natural father, but the mother could not be the natural mother
  4. Neither the father nor the mother could be the natural parents
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TLS Online TPP Program

#Question id: 12624

#Unit 6. System Physiology – Plant

The immediate precursor of brassinolide is____
TLS Online TPP Program

#Question id: 4309

#Unit 3. Fundamental Processes

Imagine that you've isolated a yeast mutant that contains histones resistant to acetylation. What phenotype would you predict for this mutant?
TLS Online TPP Program

#Question id: 12994

#Unit 1. Molecules and their Interaction Relevant to Biology

α-helix changes their configurations according to the environment then
a. when found in aqueous or plasm environment 
b. when found in membrane or hydrophobic environment
in the given condition interaction will be 
TLS Online TPP Program

#Question id: 2599

#Unit 2. Cellular Organization

The mRNA from the trp operon has a half-life of only about____
TLS Online TPP Program

#Question id: 12132

#Unit 10. Ecological Principles

Use the following diagram of a hypothetical food web to answer the following questions. The arrows represent the transfer of food energy between the various trophic levels.

Which letter represents an organism that could be a primary consumer?