How does the simple primary and secondary structure of DNA hold the information needed to code for the many features of multicellular organisms?
A) The hydrogen bonding among backbone constituents carries coded information.
B) The base sequence of DNA carries the information needed to code for proteins.
C) The width of the double helix changes at each gene due to differences in hydrogen bonds.
D) The amino acids that make up the DNA molecule contain the information needed to make cellular proteins.
Answer: B
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Which of the following is considered a zoonotic disease?
A. Measles B. Typhoid C. Common cold D. Plague
Which occurs last in the stages of infection and recovery?
a. inflammation b. attack by lysozymes in sweat and saliva c. antibody-mediated immune response d. production of mucous e. production of interferon
Gene therapy is performed by ____
a. replacing the genomes of an individual with a brand new set of genomes with the goal of treating a genetic defect b. replacing a defective gene in an individual with a normal gene with the goal of treating a genetic disorder c. transferring a mutated gene into an individual with the goal of treating a genetic defect d. transferring a normal or a modified gene into an individual with the goal of treating a genetic defect e. replacing a defective enzyme in an individual with a normal enzyme with the goal of treating a genetic disorder
In the United States, what fuel source supplies the largest percentage of total energy?
a. nuclear energy b. renewable energy c. coal d. natural gas e. petroleum