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TLS Online TPP Program

#Question id: 4130

Which of the following is not true of tRNA molecules?

#Unit 3. Fundamental Processes

  1. The 3'-terminal sequence is —CCA.

  2. Their anticodons are complementary to the triplet codon in the mRNA.

  3. They contain more than four different bases.

  4. With the right enzyme, any given tRNA molecule will accept any of the 20 amino acids.

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TLS Online TPP Program

#Question id: 22968

#Unit 7. System Physiology – Animal

Vitamin D and PTH appear to stimulate production of mature osteoclasts through the dual action:
a. Inhibiting OPG production
b. Stimulating RANKL formation
c. Stimulating OPG production
d. Inhibiting RANKL formation
TLS Online TPP Program

#Question id: 11213

#Unit 7. System Physiology – Animal

An example of ligand-gated ion channels is ________.
TLS Online TPP Program

#Question id: 11556

#Unit 7. System Physiology – Animal

During mammalian labor and delivery, the contraction of uterine muscles is enhanced by oxytocin. This is an example of ________.
TLS Online TPP Program

#Question id: 31229

#Unit 2. Cellular Organization

In which of the following phase of cell cycle, lamins are disappear? 
TLS Online TPP Program

#Question id: 19122

#Unit 8. Inheritance Biology

Trisomy 18 is one of the most common trisomies observed in human populations. You prepare DNA samples from two unrelated infants, both with trisomy 18, and from their parents. You then type the infants and their parents for four SSRs distributed along chromosome 18:
     
             
                                         
In which division of meiosis did nondisjunction occur in Family 2?