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TLS Online TPP Program

#Question id: 12975

Which of the following is true with respect to oligotrophic lakes and eutrophic lakes?

#Unit 10. Ecological Principles
  1. Oligotrophic lakes are more subject to oxygen depletion.
  2. Rates of photosynthesis are lower in eutrophic lakes.
  3. Eutrophic lake water contains lower concentrations of nutrients. 
  4. Eutrophic lakes are richer in nutrients.
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TLS Online TPP Program

#Question id: 2306

#Unit 2. Cellular Organization

The cells of the Eukarya can grow larger than the cells of the Bacteria or the Archaea because:
TLS Online TPP Program

#Question id: 31151

#Unit 2. Cellular Organization

Mutation in a structural gene that codes for the lysosomal hydrolase that causes disease, called:
TLS Online TPP Program

#Question id: 1853

#Unit 4. Cell Communication and Cell Signaling

An antibody response to a protein vaccine can only be obtained:
TLS Online TPP Program

#Question id: 5663

#Unit 5. Developmental Biology

Following statements are related to slow block to polyspermy in mammals.

A. A First slow block to polyspermy comes When the cortical granules fuse with the egg cell membrane, they release protein-digesting enzymes which is called as ovastacin that modify the zona pellucida proteins.

B. A second slow block to polyspermy comes from the so-called zinc spark, the release of billions of zinc ions that is induced by the entry of the first sperm, these released zinc ions are seen to bind to the egg cell membrane form a “zinc shield” that prevents further sperm entry.

C. A third slow block to polyspermy occurs at the level of the egg cell membrane and involves Juno.

Which of the following is incorrect?
TLS Online TPP Program

#Question id: 4933

#Unit 11. Evolution and Behavior

What structure do protocells have in common with current cells?