Which embryonic tissue is incorrectly associated with its derivative?
a. skin from mesoderm
b. nervous system from ectoderm
c. stomach lining from endoderm
d. circulatory system from mesoderm
e. skeletal system from mesoderm
a
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An organism has been isolated from decomposing organic matter. This organism has a cell wall but no chloroplasts. How would you classify this organism?
Of the following, which is associated with the production of multiple mRNAs from a single gene?
A) alternative splicing B) spliceosome mutations C) polycistronic organization D) gene rearrangement E) both choices B and C
Maintaining the volume and composition of extracellular fluid is an essential aspect of __________. Fill in the blank(s) with the appropriate word(s)
Which white blood cells comprise 20% to 30% of the circulating WBCs and are the cells that function in the body's specific immune system?
A. Monocytes B. Lymphocytes C. Neutrophils D. Eosinophils E. Basophils