Compare a pseudocoelom to a coelom.
A. A coelom is completely enclosed by mesoderm whereas a pseudocoelom has an outer covering of mesoderm and an inner one of endoderm.
B. A pseudocoelom is completely enclosed by mesoderm whereas a coelom has an outer covering of mesoderm and an inner one of endoderm.
C. The coelom is enclosed by ectoderm and the pseudocoelom is enclosed by endoderm.
D. The pseudocoelom is enclosed by ectoderm and the coelom is enclosed by endoderm.
E. The coelom is enclosed by ectoderm and the pseudocoelom is enclosed by mesoderm.
A. A coelom is completely enclosed by mesoderm whereas a pseudocoelom has an outer covering of mesoderm and an inner one of endoderm.
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Which of these statements does NOT describe a characteristic of the genetic code?
A) The number of codons and amino acids is the same. B) The code is used by nearly every living organism. C) Some amino acids have multiple codons. D) The code is degenerate.
A chromosome library is a collection of all of the DNA:a
that occurs in one species. b. contained in one chromosome. c. that would be found in the chromosomes of a typical cell of a particular organism. d. in a recombinant gene. e. that codes for functional enzymes in a chromosome of a particular organism
What is the difference between an atom and an element?
An important function of nomenclature is to
A. facilitate unambiguous communication. B. clarify relationships among organisms. C. provide an understanding of evolutionary relationships. D. define the characteristics used for classification. E. provide a detailed description of an organism.