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TLS Online TPP Program

#Question id: 1297

What effect might an injection of RGD peptide have on tumor cells moving through the blood/lymph system?

#Unit 4. Cell Communication and Cell Signaling

  1. block cell attachment to new tissue and therefore prevent metastasis

  2. encourage clumping of cancer cells for removal by the immune system

  3. promote tumor cell binding to platelets and potentially lead to a fatal clot

  4. block integrin-mediated cell cycle progression

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TLS Online TPP Program

#Question id: 12576

#Unit 10. Ecological Principles

Estimates of current rates of extinction
TLS Online TPP Program

#Question id: 28502

#Unit 5. Developmental Biology

Hox11 paralogues gene specify which bones of tetrapod limb ?
TLS Online TPP Program

#Question id: 28818

#Unit 2. Cellular Organization

Which of the following condition is involve to unfolds the myosin II, active and can assemble into bipolar filaments for contraction?
TLS Online TPP Program

#Question id: 12277

#Unit 7. System Physiology – Animal

A 45-year-old man adds lots of high-fiber wheat and bran foods to his diet to reduce his cholesterol. He loses 30 lb on the new diet, but has undesirable side effects such as stomach cramps, flatulence, and diarrhea. His gastroenterologist diagnoses a syndrome called gluten-enteropathy or celiac sprue. Which of the following is decreased in this man?
TLS Online TPP Program

#Question id: 4076

#Unit 3. Fundamental Processes

RNA-binding proteins

a. can be identified by chromatography of UV irradiated nuclear extracts over oligo-dT columns.

b. can be identified by sequence homology to known RNA-binding domains.

c. have a conserved structure as seen by X-ray crystallographic analysis.

d. alter the secondary structure of pre-mRNAs, which decreases interactions with other RNAs or proteins.

e. always remain in the nucleus.