Which of the following is a FALSE statement about prokaryotes?
A) Prokaryotic cells contain ribosomes.
B) Prokaryotes are so small that they can be seen only with a high-power electron microscope.
C) Prokaryotes may contain extra genes in plasmids.
D) Prokaryotes have a plasma membrane, similar to that of eukaryotes.
B
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Most organic matter found in soils results from primary producers such as ________.
A. photosynthetic protists B. vascular plants C. cyanobacteria D. None of the choices are correct.
The first part of the small intestine is the
a. duodenum. b. ileum. c. colon. d. cecum. e. jejunum.
It has been suggested that the allele for cystic fibrosis may confer some protection against
A. tuberculosis. B. malaria. C. bacterial diarrhea. D. typhoid fever. E. bacterial diarrhea and typhoid fever only.
Figure 12.4
The cell in the accompanying illustration is in ____.
A. prophase I B. metaphase I C. anaphase I D. prophase II E. anaphase II