(02.02 MC)What do both the theory of evolution and the cell theory have in common as scientific theories?

(01.01 HC)Isabella works for an environmental safety group. Her group wants to answer the question “To what lengths must we go to protect plants and animals?” Why is her group’s research question flawed?

A company produces batches of 25 mL pipettes. The quality control department selected 6 pipettes to test and obtained the following data: Pipette #1 -27.02 mL Pipette #2 – 26.99 mL Pipette #3 – 26.97 mL Pipette #4-  27.01 mL Pipette #5 – 27.00 mL Please identify if they are accurate, precise, both or neither.

(03.03 MC)If a tRNA molecule has an anticodon which reads CAG, what was the codon on the mRNA molecule?

(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?