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TLS Online TPP Program

#Question id: 8789

If additional DNA sequence evidence shows that yeast genes for synthesizing proteins are more similar to protein-synthesizing genes in bacteria than those in archaea, a modern systematist would ________.

#XL - R Botany
  1. redraw the phylogeny to show eukaryotes sharing a more recent common ancestor with bacteria than archaea
  2. redraw the phylogeny to show more recent common ancestry between archaea and yeast than between eukaryotes and archaea
  3. retain the phylogeny that shows a more recent common ancestor between eukaryotes and archaea
  4. retain the phylogeny that shows a more recent common ancestor between bacteria and archaea
More Questions
TLS Online TPP Program

#Question id: 2204

#XL - Q Biochemistry

A mutant channel protein is expressed in an oocyte. Compared to patch clamping experiments in oocytes expressing the normal channel, the length of downward deviations is diminished by half. This indicates:
TLS Online TPP Program

#Question id: 2205

#XL - Q Biochemistry

Amino acid entry into cells can occur via uniporters or symporters. If the rate of leucine entry into the cell increases when the pH decreases, this suggests:
TLS Online TPP Program

#Question id: 2207

#XL - Q Biochemistry

Why was it unexpected that transporter proteins are required for transmembrane fatty acid transport?
TLS Online TPP Program

#Question id: 2208

#XL - Q Biochemistry

Which of the following statements is a reasonable explanation for why unsaturated fatty acids help keep a membrane more fluid at lower temperatures?
TLS Online TPP Program

#Question id: 2210

#XL - Q Biochemistry

Which of these is a general feature of the lipid bilayer in all biological membranes?
TLS Online TPP Program

#Question id: 2226

#XL - Q Biochemistry

What will happen to a red blood cell (RBC), which has an internal ion content of about 0.9%, if it is placed into a beaker of pure water?