DNA is a nucleic acid that consists of thousands of smaller, repeating units called nucleotides. What function do nucleic acids serve besides storing genetic information?
Answer: Regulating the synthesis of proteins
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In which of the following situations is genetic drift likely to occur?
A. A small population of lizards is isolated on a small island. B. A mouse develops a fur coat that enables it to hide more readily from predators. C. Two schools of tuna merge together to form one large population. D. A river changes course, changing the local environment for a population of butterflies.
Evaluation of the quality of the sputum specimen sent to the laboratory for bacterial culture is best performed by:
a. measuring the amount of mucus found. b. checking for mucus or blood. c. microscopically examining the Gram-stained smear for leukocytes. d. microscopically examining the Gram-stained smear for squamous epi-thelial cells.
Transcription occurs ________ and translation occurs ________ of eukaryotic cells.
A) in the nucleus; in the cytoplasm B) in the cytoplasm; in the nucleus C) in the nucleus; at the cell membrane D) in the cytoplasm; at the cell membrane
A friend of yours calls to say that his car would not start this morning. He asks for your help. You say that you think the battery must be dead. If so, then jump-starting the car from a good battery will solve the problem
In doing so, you are _____. A) testing a theory for why the car will not start B) making observations to inspire a theory for why the car will not start C) stating a hypothesis and using that hypothesis to make a testable prediction D) comparing multiple hypotheses for why the car will not start