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TLS Online TPP Program

#Question id: 18855

to elute target proteins from an affinity chromatography matrix, which of the following conditions would be the most appropriate?

#Unit 13. Methods in Biology
  1. Low salt concentrations
  2. High salt concentrations
  3. Adding a soluble ligand which competes with the affinity tagged protein for binding to the column
  4. Just keep washing buffer through the column, isocratic elution
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TLS Online TPP Program

#Question id: 2819

#Unit 2. Cellular Organization

A typical eukaryotic gene consists of which of the following elements?

a. internal ribosome binding sites       b. introns         c. exons            d. enhancers
TLS Online TPP Program

#Question id: 32381

#Unit 2. Cellular Organization

What is the primary function of ATP hydrolysis in the myosin head?
TLS Online TPP Program

#Question id: 4712

#Unit 11. Evolution and Behavior

Which of these conditions are always true of populations evolving due to natural selection? Condition 1: The population must vary in traits that are heritable.

Condition 2: Some heritable traits must increase reproductive success.

Condition 3: Individuals pass on most traits that they acquire during their lifetime.
TLS Online TPP Program

#Question id: 11943

#Unit 7. System Physiology – Animal

Which of the following changes tends to increase GFR?
TLS Online TPP Program

#Question id: 28668

#Unit 2. Cellular Organization

In Yeast cells with a defective wee1+ gene activate mitotic CDKs prematurely and cause__