Bony fishes possess two features not found in other fish. Select the best choice from those listed below to complete the following sentence. Bony fishes have
A. swim bladders and gill covers called opercula.
B. swim bladders and a complete digestive system.
C. swim bladders and a closed circulatory system.
D. swim bladders and movable jaws.
A. swim bladders and gill covers called opercula.
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How do bacteriophage influence bacterial evolution?
A) Bacteriophage cause cleavage and rearrangement of bacterial genomes, thus accelerating bacterial evolution. B) Bacteriophage lyse mutated bacterial cells, thus preventing them from replicating and passing on their genetic information. C) Bacteriophage transfer genetic information between bacterial cells through transduction, thus increasing the genetic diversity of bacterial populations. D) Bacteriophage decrease the size of bacterial populations and thus decreasing genetic diversity and slowing down bacterial evolution.
Which of the following acts as a quality control center for cells?
A) Lysosome B) Plasma membrane C) Endoplasmic reticulum D) Nuclear lamina
As bone develops and becomes hard, osteocytes become trapped in hollow chambers called lacunae
Indicate whether the statement is true or false
Which of the following is(are) part of the central nervous system?
A) motor system B) brain and spinal cord C) brain only D) spinal cord only