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TLS Online TPP Program

#Question id: 3782

In his work with pneumonia-causing bacteria and mice, Griffith found that

#Unit 3. Fundamental Processes

  1. the protein coat from pathogenic cells was able to transform nonpathogenic cells.

  2. heat-killed pathogenic cells caused pneumonia.

  3. some substance from pathogenic cells was transferred to nonpathogenic cells, making them pathogenic.

  4. the polysaccharide coat of bacteria caused pneumonia.

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TLS Online TPP Program

#Question id: 11240

#Unit 9. Diversity of Life Forms

 Which of the following requires ATP to function, and permits some species to respond to taxes (plural of taxis)?
TLS Online TPP Program

#Question id: 5021

#Unit 11. Evolution and Behavior

Most dinosaurs and pterosaurs become extinct at the close of the __________ era.
TLS Online TPP Program

#Question id: 18970

#Unit 8. Inheritance Biology

Consider the ABO “blood type” gene. This single gene has three alleles called A, B, and O. There are four resultant “blood types” (phenotypic classes), as follows:
                                     
Assume Hardy-Weinberg equilibrium,  the frequencies of the A and B alleles are 0.26 and 0.07, respectively. What is the frequencies of the four blood types such as A, B, AB  and O in Norway;
TLS Online TPP Program

#Question id: 3885

#Unit 3. Fundamental Processes

AZT (3'-azido-2',3'-dideoxythymidine), used to treat HIV infection, acts in HIV-infected cells by:
TLS Online TPP Program

#Question id: 9196

#Unit 9. Diversity of Life Forms

If all individuals in the last remaining population of a particular frog species were all highly elated, which type of diversity would be of greatest concern when planning to prevent the species from going extinct?