All SAT II Biology E Resources
Example Questions
Example Question #1 : Bacteria And Prokaryotes
An experiment was conducted in which motile bacteria were grown in petri dishes containing different concentrations of a collection of nutrients called yeast extract tryptone sea salts (YTSS). The bacterial growth of each dish was measured and the results are displayed in the given bar graph.
Which of the following is the most optimal concentration of YTSS for bacterial growth?
YTSS
YTSS
YTSS
YTSS
YTSS
YTSS
This question examines your ability to read a graph correctly. The optimal concentration of YTSS for bacterial growth is the concentration of YTSS in the dish that allowed for the most bacterial growth in 24 hours. Looking across the vertical bars, which represent bacterial growth in millimeters, the dish that had the highest amount of bacterial growth was the dish containing a concentration of YTSS with ~54mm. And so the optimal concentration of YTSS for bacterial growth must be YTSS.
Example Question #2 : Bacteria And Prokaryotes
Which of the following structures is not found in prokaryotic cells?
Cell wall
Plasmid
Nucleus
Ribosome
Plasma membrane
Nucleus
The correct answer is the "nucleus." Prokaryotes generally do not have membrane-enclosed organelles, and they do not have a nucleus. Plasmids are found in all prokaryotes, as well as in fungi. The other structures are found in both prokaryotes and eukaryotes.
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