Assuming that each of these possesses a cell wall, which prokaryotes should be expected to be most strongly resistant to plasmolysis in hypertonic environments?
A) extreme halophiles
B) extreme thermophiles
C) methanogens
D) cyanobacteria
A
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Which group of bacteria uses oxygen as a terminal electron acceptor and grows well in ambient air?
a. Aerobes b. Anaerobes c. Capnophiles d. Microaerophiles
A friend is writing one of those “Animals Attack!” style movies, and needs your help choosing a species to fill the title role. The plot, to the extent that it can be called a plot, requires an organism that feasts on other animals with hard shells, and can sustain massive injuries only to come back stronger and in greater numbers. What species do you recommend?
a. bees b. turtles c. sea stars d. hydras
An acid
A. has a value above 7 on the pH scale. B. is a chemical that takes hydrogen ions from a solution. C. has a value of 7 on the pH scale. D. is a chemical that adds hydrogen ions to a solution. E. All of the answer choices are correct.
The patch of actively dividing cells that is found near the tip of roots and shoots of plants is/are the
A. apical meristem only. B. lateral meristem only. C. apical and lateral meristems. D. tracheid. E. vascular bundle.