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TLS Online TPP Program

#Question id: 12571

Although extinction is a natural process, current extinctions are of concern to environmentalists because

#10. Ecological Principles
  1. More animals than ever before are going extinct.
  2. Most current extinctions are caused by introduced species. 
  3. The rate of extinction is unusually high
  4. Current extinction is primarily affecting plant diversity.
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TLS Online TPP Program

#Question id: 19304

#12. Applied Biology

What happens to signal peptides after the protein has been translocated to the desired location, to generate the mature functional proteins
TLS Online TPP Program

#Question id: 12579

#10. Ecological Principles

Which of the following probably contains the highest concentration of toxic pollutants (biological magnification)? 
TLS Online TPP Program

#Question id: 2270

#2. Cellular Organization

With which of the following are basal bodies not associated?
TLS Online TPP Program

#Question id: 1396

#4. Cell Communication and Cell Signaling

Trks are:

a. endonucleases.        b. transmembrane receptors.   c. proteases.     d. protein kinases.      
TLS Online TPP Program

#Question id: 1398

#4. Cell Communication and Cell Signaling

Which of the following properties is (are) characteristic of a benign tumor?

a. well differentiated              b. localized to tissue of origin             c. metastatic               

d. promotes angiogenesis        e. surrounded by a fibrous capsule