Identify the mismatch in the following list of helminths and their common names.
A. Opisthorchis sinensis; liver fluke
B. Trichuris trichiura; whipworm
C. Ascaris lumbricoides; intestinal roundworm
D. Taenia solium; pinworm
E. Schistosoma mansoni; blood fluke
Answer: D
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In order for high level expression of the E. coli lac operon to occur, a complex of catabolite activator protein and ________ must be bound to the DNA near the promoter.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements is not true of early plant evolution, as we have learned from Rhynie cherts?
A. Early vascular plants were small, up to 15 cm tall. B. Early vascular plants branched repeatedly and contained sporangia at their tips. C. The stems of early vascular plants lacked a cuticle or stomata. D. Some of the early plants have a branched sporophyte, but no evidence of vascular tissue. E. Fossils indicate that the roots and leaves of lycophytes evolved independently from those of ferns, horsetails, and seed plants.
What is the purpose of the P element in the creation of transgenic Drosophila?
A) Efficiently transfer DNA into Drosophila chromosomes. B) Transfer DNA into a specific site in the host chromosome. C) Transfer DNA only into the nuclei of somatic cells. D) Transfer DNA only into primitive eye cells.
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Figure 31.8A
The accompanying figure is a micrograph of what kind of tissue?
A. Cardiac muscle B. Skeletal muscle C. Smooth muscle D. Cartilage E. Dense connective