(4.5 pts) Cyanide is a potent poison to obligate aerobes like humans. It acts by preventing the function of O2 during cellular respiration. Most facultative anaerobes, such as E. coli, are not harmed by cyanide because they can survive without access to abundant O2. A) What is the function of O2 during aerobic cellular respiration? B) When O2 is not present or cannot be used, what cellular process is directly responsible for the production of ATP, allowing E. coli to continue to survive? C) Fermentation allows this process continue to take place. What molecule does fermentation regenerate? Describe the reaction used in this process.

The pH inside of a lysosome is kept compared to the pH of the cytoplasm due to the .

What is a prion, and how does it cause disease in organisms?

The Narrative essay is due in week 3.

(5 pts) Compare and contrast the cellular structure of an E. coli (a bacterium) cell with that of an onion cell. List two cellular structures that they have in common, and list or explain three differences.

Technology issues are a legitimate reason for late submissions.

MAPKs (mitogen-activated protein kinases) are a class of enzymes involved in many signaling pathways, including cell division, gene expression, stress response, and programmed cell death. What would you expect is the primary function of a MAPK enzyme?

Which of the following sequences correctly represents the flow of electrons during the light reactions of photosynthesis?

In the case of cyclic electron flow,

Directions: The sentence below contains a comma splice.  (The bolded section)  Choose the best way to correct this mistake! Ryan is highly allergic to cats, he requires at least twenty god-bless-yous every time he visits Mariko and her seven Siamese.