How is a pseudocoelom different from a coelom?
a. A pseudocoelom is a cavity not found between tissues.
b. A pseudocoelom is a cavity fully lined by mesoderm.
c. A coelom is a cavity fully lined by endoderm.
d. A coelom is a cavity fully lined by mesoderm.
e. A coelom is a cavity between two tissue layers.
d
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Scientists have learned the full extent of viral abundance on earth because
A. a wide variety of microbes is available to act as hosts for these viruses. B. metagenomic sequencing has identified viruses in a broad variety of environments. C. the final step of the viral life cycle, release of mature viruses and cell lysis, releases millions of viruses. D. viruses are known to grow on all life forms: animal, plant, fungi, and bacteria.
A mast cell is similar to a basophil in that both
A. are types of white blood cells. B. are vasoactive mediators. C. are agranulocytic. D. act as primary phagocytes. E. None of the choices are correct.
Which of the following refers to a symbiotic association between plant roots and fungi?
A. lichens B. geosmins C. extremophile D. mycorrhizae
Which part of the amino acid helps to determine its chemical properties?
a. the amino group b. the carboxyl group c. the covalent bonds d. the peptide bond e. the R group