Viruses and bacteria were first cultured in the laboratory at about the same time.
Answer the following statement true (T) or false (F)
False
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A phragmoplast functions to:
A. stimulate the growth of the microtubule spindle. B. anchor microtubules to sister chromatids. C. breakdown the nuclear envelope. D. form a new cell wall.
The most common adjuvant is
A. ethanol. B. formalin. C. alum. D. aluminum. E. alum AND aluminum.
Salt is often used to melt ice on roads during the winter because it lowers the freezing/melting point of water. When salt dissolves in water, individual Na+ and Cl- ions break away from the salt lattice and become surrounded by water molecules. Why would this cause ice to melt?
A. Hydrogen bonds are formed, and the salt ions bond with O. As a result, it is more difficult for water molecules to bond and form ice. B. Hydrogen bonds are broken, and the salt ions interfere with interactions between H and O. As a result, it is more difficult for water molecules to bond and form ice. C. Hydrogen bonds are broken, and the salt ions bond with O and H respectively. As a result, it is more difficult for water molecules to bond and form ice.
E. coli is a good model system for molecular biology studies because
a. it has a small genome. b. it reproduces rapidly. c. mutants can easily be isolated from culture dishes. d. All of the above