The germ layer called the endoderm produces

A. the heart.

B. the nervous system.

C. the lining of the digestive tract.

D. bone.

E. muscles.


C. the lining of the digestive tract.

Biology & Microbiology

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Which factor serves as the primary basis for categorizing a biome?

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The arms of human chromosome 2 are syntenic with two different chimpanzee chromosomes. What mechanism could have caused this pattern of synteny?

A) an inversion in the human chromosome B) an inversion in one of the chimpanzee chromosomes C) gene duplication in the human chromosome D) exon shuffling in the chimpanzee chromosomes E) a translocation involving two chromosomes

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The immunoglobulin/s found on the surface of B cells is/are

A. IgD and IgE. B. IgD only. C. IgM only. D. IgG only. E. IgM and IgD.

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RNAs that can act as enzymes are called ________

A) ribozymes B) ATPs C) lysosomes D) prokaryotes

Biology & Microbiology