Fetal hemoglobin (HbF) contains serine instead of histidine…

Fetal hemoglobin (HbF) contains serine instead of histidine at position 143 of the gamma chain, which is the equivalent of the adult hemoglobin (HbA) beta chain. Position 143 faces the central cavity between the gamma chains.  Blank #1: Why does 2,3-biphosphoglycerate (2,3-BPG) bind more tightly to deoxy HbA than to deoxy HbF? Blank #2: What is the effect of 2,3-BPG binding less tightly to deoxy HbF than to HbA have on the affinity of HbF for O2? (increase affinity/decrease affinity)

The picture below shows three membranes, one belonging to on…

The picture below shows three membranes, one belonging to one genus of bacteria and the other two belonging to two different genuses of Archaea. Use the numbers on top of each membrane to answer the questions below.  Blank #1: Select the two membranes that belong to Archaea. List the numbers, separated by commas.  Blank #2: Describe a difference in the hydrophobic core that allowed you to identify Archaeal from bacterial membranes. Write your sentence as follows: _____________in Archaea instead of _____________ in bacteria.  Blank #3: Why is the difference in blank #2 an important adaptation for Archaea? Blank #4: Which of the two genuses of Archaea is likely to live at a higher temperature? Explain your choice.  Blank #5: Describe a difference in the bonds between the hydrophobic core and glycerol that allowed you to identify Archaeal from bacterial membranes. Write your sentence as follows: _____________in Archaea instead of _____________ in bacteria.  Blank #6: Why is the difference in blank #5 an important adaptation for Archaea?