Vacuoles are _________ in plant cells than in animal cells.

a) smaller
b) larger


Ans: b) larger

Biology & Microbiology

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Consider the life cycle shown in Figure 27-2. If the boxes labeled ā€œnā€ and ā€œ2nā€ represent multicellular structures, this life cycle could be representative of all of the following except:


a. ferns
b. club mosses.
c. horsetails.
d. hornworts.
e. algae

Biology & Microbiology

Proteus species often cause urinary tract infections.

a. true b. false

Biology & Microbiology

Which of the following is not usually an independent domain of an activator transcription factor?

a. ATPase b. dimerization c. DNA-binding d. transcription activation e. All of these are potential independent domains of an activator.

Biology & Microbiology

The signal molecule produced in quorum sensing is

a. A counterstain. b. An inducer. c. Light. d. A simple stain. e. An endospore.

Biology & Microbiology