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TLS Online TPP Program

#Question id: 9251

Which of the following is responsible for the differences in summer and winter temperature stratification of deep temperate zone lakes?

#Unit 9. Diversity of Life Forms
  1. Water is most dense at 4°C.
  2. Oxygen is most abundant in deeper waters.
  3. Winter ice sinks in the summer.
  4. Stratification is caused by a thermocline
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TLS Online TPP Program

#Question id: 4196

#Unit 3. Fundamental Processes

The role of EF-Tu in bacterial protein synthesis is
TLS Online TPP Program

#Question id: 4242

#Unit 3. Fundamental Processes

Which of the following properties is associated with a protein that will be secreted from a eukaryotic cell?
TLS Online TPP Program

#Question id: 4424

#Unit 3. Fundamental Processes

The nuclear-synthesized poly-A sequence at the 3′ end of eukaryotic messenger RNA is
TLS Online TPP Program

#Question id: 28370

#Unit 5. Developmental Biology

the generation of dorsal/ventral axis in Drosophila, which protein signal causes follicle cells to differentiate into a dorsal axis of embryo?
TLS Online TPP Program

#Question id: 15659

#Unit 8. Inheritance Biology

You calculate map distances between genes A, B, and C based on all pairwise dihybrid crosses. When you perform the trihybrid cross to verify your results, you discover that, despite analysis of a very large number of progeny, you have only about half as many double crossover progeny as you expect. Which explanation is the most reasonable?