Bacterial ________ DNA can be easily removed from the bacterium, modified by adding a gene of interest, and then reinserted into the bacterium to be replicated
A) genomic
B) polymerase
C) plasmid
D) chromosomal
E) nuclear
C
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Which of the following chemicals is used to induce polyploidy?
a. colchicine b. ethylene c. gibberellin d. cytokinin e. auxin
The surface area of the small intestine is dramatically increased due to the presence of ________ on the luminal surface.
A. smooth muscle B. capillaries C. lacteals D. hydrolytic enzymes E. villi and microvilli
Epithelial cells form tightly cohering sheets whereas erythrocytes occur as single cells. What type of integral proteins would you expect to reside in the plasma membrane of an epithelial cell that might be absent from that of an erythrocyte?
A. receptor proteins B. skeletal proteins such as microtubules and microfilaments C. single pass integral membrane proteins D. proteins involved in cell-cell adhesion or cell-cell communication E. multiple pass integral membrane proteins.
What does the mesoderm have to do with the designation of a true coelom?
A. The mesoderm gives rise to the fluid found within the coelom. B. The mesoderm gives rise to the lining of the coelom. C. The mesoderm gives rise to the outer covering of the coelom. D. The mesoderm gives rise to the structure of the coelom wall. E. The mesoderm has nothing to do with the coelom.