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TLS Online TPP Program

#Question id: 11502

Which of these statements is false and therefore does not support the hypothesis that certain eukaryotic organelles originated as bacterial endosymbionts? Such organelles

#XL - S Microbiology
  1. are roughly the same size as bacteria.
  2. can be cultured on agar, because they make all their own proteins.
  3. contain circular DNA molecules.
  4. have ribosomes that are similar to those of bacteria.
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TLS Online TPP Program

#Question id: 148

#XL - T Zoology

The pKa of a certain weak acid is 4.0. Calculate the ratio of proton acceptor to proton donor at pH 7.0.
TLS Online TPP Program

#Question id: 1175

#XL - T Zoology

Which of the following mechanisms is NOT used to terminate cytokine signaling and the JAK/STAT pathway?
TLS Online TPP Program

#Question id: 6956

#XL - T Zoology

The central nervous system is derived from _____, the axial skeleton is derived from _____, and the muscles of the trunk are derived from _____?
TLS Online TPP Program

#Question id: 10581

#XL - T Zoology

Life-history characteristics associated with K-selected organisms include
TLS Online TPP Program

#Question id: 19588

#XL - P Chemistry

Which of the following is not a lanthanide property?