1.since yeast is a facultative anaerobe, what other ingredient would
be
specifically required by the yeast for the bread- making process to be
successful and why?
2.In process of baking bread, an essential ingredient for most bread
is yeast, which is uniformly distributed throughout the dough during
the mixing and kneading process. Please explain why yeast would
necessay for this process
3. Finally, how would you expect the metabolism of the yeast cells on
the surface of the dough mixture to differ from the metabolism of the
yeast cells in the interior of the dough? please explain you answer
In some domestic turkeys, viable diploid offspring are sometimes
produced by the development of an unfertilized egg cell in the process
known as parthenogensis. as stated before such offspring like the
mothere are still diploid. What possible variation in meiosis would be
necessary to produce a diploid organism without ferlization (combinig
of male and female gametes)taking place? (There is more than one
varition that could be feasible) Explain how your particular variation
would work.
5. A particular enyzmes, when active is responsible for the reactions
that cause fur color in some species of rabbits. In winter, their fur
is white(no color), but as spring approaches they shed this white fur
coat and new coat comes in brown. Then in the fall,as winter
approches, they shed this brownfur and the new fur comes in white
again. From the concepts you learned in lecture so far, pleasegive
logical reasonof why/how this would be possible. Finally, how would
changing of their fur color be adaptive for this particular species of
rabbits? |
