Yeast produce ethanol, a toxic waste product during fermentation. Why would yeast undergo fermentation instead of cellular respiration?
A. to regenerate NAD+ in order to continue glycolysis
B. to use up excess pyruvate in order to continue glycolysis
C. to avoid the production of lactic acid
D. to produce NADH for energy
E. to conserve oxygen for other reactions
A. to regenerate NAD+ in order to continue glycolysis
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Two eukaryotic organelles that are hypothesized to be the result of endosymbiosis are the ________ and the ________
A) nucleus / Golgi body B) mitochondrion / chloroplast C) endoplasmic reticulum / Golgi body D) hydrogenosome / chloroplast
In adaptive immunity, the ______ are the cells that poke holes in foreign cells.
Fill in the blank(s) with the appropriate word(s).
Why does SV40 have a normal lytic viral cycle in monkey cells but in human cells it leads to transformation?
a) SV40 will only infect monkey cells, NOT human cells b) Monkey cells involve completely different proteins for DNA replication and mitosis compared to human cells c) The replicative viral proteins are fine-tuned to work with monkey proteins, and human proteins are different enough to reduce their function d) Transformation represent the way human cells "fight back" against SV40
What number is the Pilus?
What will be an ideal response?