What is the purpose of a cross reference

Suppose you calculate that elasticity of demand for cigarettes is 0.5. you can conclude that: a. demand for cigarettes is elastic b. demand for cigarettes is unitary elastic c. a 1% increase in price of cigarettes will result in a 0.5% decrease in quantity demanded d. a 1% increase in the price of cigarettes will result in a 0.5% increase in quantity demanded.

Spherocytosis is an inherited blood disease in which the erythrocytes (red blood cells) are spherical instead of biconcave. this condition is inherited in a dominant fashion, with sph- dominant to sph+. in people with spherocytosis, the spleen "reads" the spherical red blood cells as defective, and it removes them from the bloodstream, leading to anemia. the spleen in different people removes the spherical erythrocytes with different efficiencies. some people with spherical erythrocytes suffer severe anemia and some mild anemia, yet others have spleens that function so poorly there are no symptoms of anemia at all. when 2400 people with the genotype sph- sph+ were examined, it was found that 2250 had anemia of varying severity, but 150 had no symptoms. does this description of people with spherocytosis represent incomplete penetrance, variable expressivity, or both? explain your answer. (3 points)

192) if you are a pta, which of the following are standards from the “standards of ethical conduct for the physical therapist assistant? ” a. physical therapist assistants shall be trustworthy and compassionate in addressing the rights and needs of patients/clients. b. physical therapist assistants shall make sound decisions in collaboration with the physical therapist and within the boundaries established by laws and regulations. c. physical therapist assistants shall demonstrate integrity in their relationships with patients/clients, families, colleagues, students, other health care providers, employers, payers, and the public d. physical therapist assistants shall enhance their competence through the lifelong acquisition and refinement of knowledge, skills, and abilities.