* Which of these are routinely used to obtain a pure culture of bacteria? a. swan necked...

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Biology

* Which of these areroutinely used to obtain a pure culture of bacteria?
a. swan necked flasksb. agar streak plates c. dilution plates d. microscopes
* The cells of allspecies of Bacteria and Archaea are very small, and:
a. must be stainedbefore they can be seen using light microscopy
b. can only be seenusing electron microscopy
c. can only be seen ifthey are first Gram stained
d. none of theabove
* Prokaryotes evolvedearly on in the history of the Earth:
a. so their physiologyhas little in common with Eukaryotes
b. so many aspects oftheir physiology also occur in Eukaryotes, which evolved much laterin in the history of the Earth
c. and Eukaryotesevolved independently at a much later time in the history of theEarth
d. at about the sametime that Eukaryotes first appeared on Earth

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4.2 Ratings (599 Votes)

1 b agar streak plates Explanation The streakplate procedure is designed to isolate pure cultures of bacteria or colonies from mixed populations by simple mechanical separation 2 a must be stained See Answer

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