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TLS Online TPP Program

#Question id: 2054

What is the single best defining feature of systemic lupus erythematosus (SLE)?

#Unit 4. Cell Communication and Cell Signaling

  1. A type III hypersensitivity

  2. A disease in which anti-DNA autoantibodies are present

  3. A disease that often affects the skin

  4. A disease that often affects the kidneys

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TLS Online TPP Program

#Question id: 10865

#Unit 10. Ecological Principles

In the Lotka-Volterra model of competition, coexistence between species 1 and species 2
TLS Online TPP Program

#Question id: 5772

#Unit 8. Inheritance Biology

A missense mutation in Neurospora will revert by treatment with nitrous acid (causes transversions), but not by hydroxylamine (causes AT -> GC transitions). The original mutation (not the reversion) must have been
TLS Online TPP Program

#Question id: 33473

#Unit 2. Cellular Organization

Which of the following specialized DNA sequences and their functions that act to ensure that the number and morphology of chromosomes are constant from one generation of a cell to the next.
 Replication origins B. Centromeres C. Telomeres
TLS Online TPP Program

#Question id: 11362

#Unit 10. Ecological Principles

Within a trophic level, this term refers to groups of species that feed on similar resources and often have similar ways of life.
TLS Online TPP Program

#Question id: 5637

#Unit 5. Developmental Biology

In an experiment, Sperm from mice carrying loss-of-function mutations in the Izumo gene. Which of the following statement is correct?