An aquatic microbe that can grow only near the surface of the water is probably which of the following?
A) a phototroph
B) a heterotroph
C) a chemotroph
D) a lithotroph
E) an anaerobe
A
Bloom's Taxonomy: Analysis
Section: Growth Requirements
Learning Outcome: 6.2
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In a reflex arc, the correct sequence of cell types through which an electrical signal would pass would be
A. motor neuron ? sensory neuron ? interneuron in the PNS B. sensory neuron ? interneuron in the CNS ? motor neuron C. sensory neuron ? motor neuron ? interneuron in the CNS D. motor neuron ? interneuron in the PNS ? sensory neuron
Nuclear pores have proteins that open and close, controlling flow of cell solutions and molecules in and out of the nuclear envelope (a double-thick membrane). In this, nuclear pores are similar in structure and function to
A. gap junctions. B. cilia. C. cytoskeleton microtubules. D. anchoring junctions. E. vacuoles.
One major difference between eukaryotes and prokaryotes is that __________.
A. some eukaryotic cells live in areas of temperature extremes, whereas prokaryotic cells cannot B. eukaryotic cells contain the genetic material DNA, whereas prokaryotic cells contain RNA C. prokaryotic cell structure is much more complex than eukaryotic cell structure D. eukaryotes' survival is limited to a few environments, whereas some prokaryotes have adapted to a variety of extreme environments
Which of the following best describes the nature of the cells of mature, functioning xylem?
A) dead, thick-walled tubes B) living cells that have lost their nucleus C) dead cells that retain some organelles and some maintenance functions D) living, thick-walled tubes