Question

Monad, a molecular biologist, stated, “What is true for the bacterium Escherichia coli is true for an elephant.” What might he have meant by this statement?
E. coli and elephants have exactly the same genes.
Major metabolic pathways are similar across all groups of organisms.
The cellular components between E. coli and elephants are the same.
Cellular processes are species specific.
Enzymes are structurally the same across all groups of organisms.

Answer 1

Do E.coli and elephants have the same genes?

Answer 2

It's a bacteria, so I highly doubt it.

Answer 3

That information also rules out which choices?

Answer 4

The cellular components between E. coli and elephants are the same. ..Right?

Answer 5

Elephants are not bacteria. E. coli and elephants have different types of cells that have different components. What type of cell is E. coli? Elephant cells?

Answer 6

xD so it was definitely ruled out. E. coli lives in the intestines - and is in the domain of bacteria.. definitely not elephant cells! :D

Answer 7

Now, the second and fourth choices are contradictory in meanings! This indicates that one may be the answer. However, the fourth choice seems to be a statement that points out a difference between both E.coli and elephants, and logically, famous scientific quotes aren't usually broad in meaning.
Now, how about the last answer? Are there differences in enzymes in different species?

Answer 8

Oh, and another hint: so far, all known organisms use and produce ATP!
Hope I helped!

Answer 9

Yeah, there should be different enzymes in different species. ><"

Answer 10

Got the answer? :)

Answer 11

-nods- you are awesome!