(02.05 MC)Andrea would like to reduce her risk of skin cancer. To help reduce her risk, she can do all of the following except

(01.01 MC)Christiaan Eijkman shared the Nobel Prize in 1929 for the discovery of vitamins. Eijkman went to Java to isolate the pathogen causing beriberi, an illness that appeared to be contagious as it was common in prisons and among ship crews. Eijkman noticed that chickens fed a diet of white rice also suffered from a similar disorder. When the chickens were fed a diet of red rice, the chickens quickly recovered. What can Eijkman safely infer at this point from his observations?

(01.03 MC)Which of the following would most likely be key to gathering evidence that the “RNA World” hypothesis is valid?

(02.02 MC)Which of the following best explains how a dissecting microscope differs from a compound light microscope?

(02.05 MC)Which communicable disease is a bacterial infection passed through contact with sores?

(01.01 HC)Carlos is trying to determine how music affects the growth of bean plants. He hypothesizes that classical music will cause a plant to grow at a higher rate than no music or rap music. He grows nine bean plants in similar lighting, temperature, and soil conditions. Three are exposed to classical music 24 hours a day, three are exposed to rap music 24 hours a day, and three are grown in complete silence. Carlos measures the growth of the plants every day and finds that the plants all seem to have the same rate of growth.What can you infer is missing from Carlos’s scientific investigation?

(03.04 MC)In order for an inherited genetic mutation to result in a phenotypic change for a recessive trait, which of the following must occur?

(01.03 MC)The most significant outcome of the Miller and Urey experiments was that they

  (03.07 HC)You are a forensic scientist on a case of a missing child. You are tasked with using genetic genealogy to determine if a child in custody is the missing child. Currently, you do not have a DNA sample from the child. However, the child has hemophilia, a sex-linked genetic disorder passed from mother to child.Looking at the grandparents and parents of the missing child, you put together this pedigree. The shaded shapes mean the person has hemophilia. The open shapes mean a person does not have hemophilia and they are not a carrier of the disorder. The circles represent females, and the squares represent males in the family. The child in custody is represented with a shaded circle.Could the child in custody be the missing child?

(02.01 MC)Which of the following best explains how hydrogen bonding affects the heat of vaporization for water?