BYU- Biology Final Exam (Questions + Answers) Verified 100% Correct!!.

BYU - Biology Final Exam A certain species of sea otters lives off the coast of Alaska. Some have the ability to tolerate the colder waters farther north while others stay in the central coastal area. As a result of a large oil spill along the northern coast, most of the otters li ving in those colder waters die. Afterwards, the population of otters, in general, is now less tolerant of cold water. What is this an example of? A.) allopatric speciation B.) hybrid sterility C.) bottleneck effect D.) sympatric speciation - C All living things must A.) talk B.) eat C.) grow D.) see E.) move - C Because you are a combination of DNA from two different people's cells, you are a product of what type of reproduction? A.) asexual reproduction B.) sexual reproduction C.) unicellular reproduction D.) multicellular reproduction - B Biology is the study of A.) weather patterns B.) the universe C.) rocks D.) living things - D DNA has _____. Instead, RNA has _______. A.) thymine; uracil B.) adenine; uracil C.) uracil; adenine D.) uracil; thymine - A DNA is a double helix formed by which of the following molecules? A.) carbohydrates B.) lipids C.) proteins D.) nucleotides - D Dr. Alexander is a scientist who studies a certain type of fly. In his studies, he came across information that says that the fly doesn't need any calcium in its diet. This question interests him because he doesn't think it is true. He decides to create an experiment that will test if this question is true. His hypothesis is that a fly will not live without calcium in its diet. In his first experiment to test this hypothesis, he takes one fly and feeds it food without calcium. He records the health of the fl y each day and notices that seven days later the fly is dead. He concludes that flies do need calcium. Is Dr. Alexander's conclusion valid? Why or why not? A.) No, because even though he did research at the beginning, he did not have a hypothesis before he experimented. B.) No, because his experiment didn't include a control group of flies to compare to the fly that didn't get calcium. C.) Yes, because he start - B During which step of the scientific method is the hypothesis tested? A.) gather information B.) conduct an experiment C.) record data D.) form a conclusion - B How are carbohydrates stored in the body for future energy use (long -term storage)? A.) as glucose molecules B.) as maltose molecules C.) as fat molecules D.) as sucrose molecules - C How has technology affected the study of science? A.) Technology made studying and understanding the world around us harder. B.) Technology has had no significant impact on our study of the world around us. C.) Technology helped us break science down into its many different branches. D.) Technology increased our ability to study and understand the world around us. - D How is a eukaryotic cell different from a prokaryotic cell?