Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 1988
TLS Online TPP Program

#Question id: 2013

A patient undergoes a high level of mast cell degranulation, dilation of blood vessels, and acute drop in blood pressure. These symptoms could be caused by which of the following?

#Unit 4. Cell Communication and Cell Signaling

  1. an autoimmune disease

  2. a typical allergy that can be treated by antihistamines

  3. anaphylactic shock immediately following exposure to an allergen

  4. the effect of exhaustion on the immune system

More Questions
TLS Online TPP Program

#Question id: 7218

#Unit 5. Developmental Biology

Following statements are regarding to convergent extension of the dorsal mesoderm in xenopus.

A. For convergent extension the first force is a polarized cell cohesion wherein the involuted mesodermal cells intercalate and the second force is differential cell cohesion.

B. The intercalations of mesodermal cells, both mediolaterally and radially, are stabilized by the planar cell polarity (PCP) pathway that is initiated by Wnts independent of β-catenin signaling.

C. The intercalations of mesodermal cells, are stabilized by the planar cell polarity (PCP) pathway that is initiated by Wnts dependent of β-catenin signaling.

D. Another factor regulating convergent extension is calcium influx from environment.

E. Ca2+ is released from intracellular stores and is required for convergent extension.

Which of the following combination is correct?
TLS Online TPP Program

#Question id: 14501

#Unit 13. Methods in Biology

In a population having 50% rice consumers, what is the probability that three or less out of 10 are rice consumers?
TLS Online TPP Program

#Question id: 34112

#Unit 2. Cellular Organization

A. When interphase nuclei are suspended in a solution of low ionic strength, they swell and rupture to release fibers of chromatin.
B. Individual nucleosomes can be obtained by treating chromatin with the endonuclease micrococcal nuclease
C. When chromatin is digested with MNase, the DNA is cleaved into integral multiples of a unit length can be Fractionated by gel electrophoresis reveals the “ladder”
D. With MNase more than 95% of nuclear DNA can be recovered in the form of the 200-bp ladder.

Choose true and false
TLS Online TPP Program

#Question id: 10873

#Unit 10. Ecological Principles

Allelopathy is a form of ________ competition.
TLS Online TPP Program

#Question id: 11594

#Unit 6. System Physiology – Plant

Given some compounds that are the first stage inhibitor of gibberellin biosynthesis except?