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TLS Online TPP Program

#Question id: 2042

Which of the following process is required for the formation of C3 convertase that amplifies complement activation?

#Unit 4. Cell Communication and Cell Signaling

  1. C3b must bind to foreign antigens

  2. Factor B must bind to C3b for its proteolysis by Factor D

  3. Properdin must bind to the C3bBb complex for stabilization

  4. All of the above

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TLS Online TPP Program

#Question id: 19718

#Unit 3. Fundamental Processes

Bouquet stage is observed in which stage of the cell division.
TLS Online TPP Program

#Question id: 34107

#Unit 2. Cellular Organization

A. Lampbrush chromosomes are formed during an unusually extended mitosis
B. The lampbrush chromosomes are meiotic bivalents, each consisting of paired homologous chromosomes that have been replicated
C. The lampbrush chromosomes are held together only by chiasmata that indicate points of chromosome crossover.
D. The loops around Lampbrush are surrounded by a matrix of ribonucleoproteins that contain nascent RNA chains.
TLS Online TPP Program

#Question id: 23563

#Unit 13. Methods in Biology

________ is the direct uptake of foreign DNA by a host cell.
TLS Online TPP Program

#Question id: 28942

#Unit 7. System Physiology – Animal

Which of the following tripeptide hormones, stimulates the secretion of TSH by thyrotropes in anterior pituitary?
TLS Online TPP Program

#Question id: 10603

#Unit 10. Ecological Principles

The population size of a bird increased from 600 to 700 in one year. If the per capita birth rate of this population is 0.50, what is its per capita death rate?