Which of the following phyla contains animals that reproduce asexually?
A) Mollusca B) Cnidaria C) Chordata D) Nematoda E) Annelida
B
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. Eutherian mammals are uniquely defined by
A. having a placenta. B. longer gestation periods because of more highly developed placentas. C. having fur. D. the young developing in a pouch. E. laying eggs.
Which of the following properties are shared by both bacteria and archaea?
A. Method of DNA compaction B. Ester linkages in fatty acids C. Single, circular chromosome D. Cell wall polysaccharides
In which of these stages does the chromosome consist of two chromatids?
1.prophase and anaphase 2.metaphase, prophase, and anaphase 3.metaphase and prophase 4.metaphase, telophase, and prophase 5.at any time during cell division
The phagocyte that kills about 20 bacteria before dying is the ____
a. eosinophils b. macrophage c. neutrophils d. dendritic cell e. basophils