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TLS Online TPP Program

#Question id: 10574

Which of the following statements about the evolution of life histories is correct?

#Unit 10. Ecological Principles
  1. Stable environments with limited resources favor r-selected populations.
  2. K-selected populations are most often found in environments where density-independent factors are important regulators of population size.
  3. Most populations have both r- and K-selected characteristics that vary under different environmental conditions.
  4. The reproductive efforts of r-selected populations are directed at producing just a few offspring with good competitive abilities
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TLS Online TPP Program

#Question id: 29587

#Unit 6. System Physiology – Plant

Following are given stages of gibberellin biosynthetic pathway;
a) Geranylgeranyl diphosphate (GGPP) is converted to ent-kaurene  via copalyl diphosphate (CPP) in endoplasmic reticulum
b) In the endoplasmic reticulum, conversion of ent-kaurene into GA12 or GA53 depending on whether the GA is hydroxylated at carbon 13
c) the conversion of GA12 or GA53 into other GAs in cytosol proceeds with a series of oxidations at carbon 20
d) GA20 is then oxidized to the active gibberellin, GA1, by a 3β-hydroxylation reaction

Which of the following is the correct statements of GA biosynthesis?
TLS Online TPP Program

#Question id: 1043

#Unit 4. Cell Communication and Cell Signaling

Nematodes
TLS Online TPP Program

#Question id: 5310

#Unit 11. Evolution and Behavior

Current analysis indicates that less than 2% of the human genome codes for proteins. Based on the systems approach employed by the ENCODE project, what percentage of the genome is estimated to be transcribed at some point in at least one cell type?
TLS Online TPP Program

#Question id: 4320

#Unit 3. Fundamental Processes

Forms of the Ras protein found in tumors usually cause which of the following events to occur?
TLS Online TPP Program

#Question id: 15968

#Unit 12. Applied Biology

The formation of embryoids from the pollen grains in the tissue culture medium is due to____