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• what is an advantage of using cell culture rather than bacterial culture to produce biological molecules? cell culture can be used to produce fat-soluble vitamins. cell culture can be used to produce steroid hormones. cell culture can be used to produce clones. cell culture can be used to produce complex proteins.
  
• read this excerpt from a travel journal. today we circled d.c.’s tidal basin – it was amazing! we started at the jefferson memorial, with its towering statue and familiar quotes. then, it was on to the newer fdr memorial. which sentence exhibits the most appropriate style in which to continue this journal? the fdr memorial is stunning; its historical depiction of the depression era and the country’s recovery is unrivaled. my family relished the carefully manicured grounds of the exquisite fdr memorial, replete with waterfalls and statues. we loved the lifelike statues and tumbling water falls that led us through the memorial’s grounds. the fdr memorial, constructed in the 1990s, celebrates fdr’s three terms with statues and waterfalls.
  
• which best states the principle of limited government established by the constitution? government can do only what the courts give it authority to do. government can do only what the people give it authority to do. government can do only what the president gives it authority to do. government can do only what congress gives it authority to do.
  
• determine whether the graph of the quadratic function y = –x2 – 10x + 1 opens upward or downward. explain.
  
• the chemical formula for an emerald is be3al2(sio3)6. an emerald can be described as a pure substance because it is a compound. a pure substance because it is an element. an impure substance because it is chemically combined. an impure substance because it is a mixture.
  
• which is one reason why hydrogen is considered a better fuel source for cars? it is nonrenewable. it produces carbon dioxide. it emits no harmful emissions. it combines with water to produce electricity.
  
• how can incorporating lifestyle activities into a fitness program increase the likelihood of its success? a. it increases the amount of time spent on fitness activities. b. it is often more convenient to participate in lifestyle fitness activities than more formal fitness activities. c. it helps a personal fitness program lead to lifestyle change. d. all of the above
  
• the function f(x) = 2(3.5)x is reflected across the x-axis to create g(x). what is the function definition of g(x)? g(x) = (3.5x) what is the initial value of g(x)? what are the outputs for inputs of –1 and 1 in g(x)? g(−1) = g(1) =
  
• a hyperbola has its foci at (1, 7) and (1, –13). a directrix of the hyperbola is y = . what is the equation of the hyperbola? = 1 = 1 = 1 = 1
  
• which of the following groups provides protection and nourishment to the embryo?