BIOL 1001 FINAL EXAM WEEK 6 – QUESTION AND ANSWERS

BIOL 1001 FINAL EXAM WEEK 6 – QUESTION AND ANSWERS Course BIOL-1001P-8/BIOL-1001L-8/BIOL-1001-8-Introduction to Biology2017 Spring Qtr 02/27- 05/21-PT5 Test Exam ­ Week 6 Started 5/19/17 9:46 PM Submitted 5/20/17 12:43 AM Due Date 5/22/17 1:59 AM Status Completed Attempt Score Time Elapsed 2 hours, 56 minutes out of 3 hours Instructions Please answer each question below and click Submit when you have completed the Exam. Results Correct Answers Displayed Question 1 North America is currently experiencing an unprecedented and rapid loss of species. What is believed to be the main cause? Correct Answer: d. Human activities Question 2 Which of the following is not a form of evidence used in understanding the evolutionary relationship among living organisms? Correct Answer: c. All of the above Question 3 During cellular respiration, glucose is metabolized into the low-energy compounds carbon dioxide and water, while the rest of the energy released goes where? Correct Answer: a. Into ATP Question 4 Different versions of the same genes are called: Correct Answer: a. Alleles Question 5 During the 19th century, sea otters were hunted almost to the point of extinction. When the number of sea otters became very low, the ecosystem of kelp bed “forests” also declined. Scientists discovered that the sea otters were predators of sea urchins, which were, in turn, predators of the kelp. When sea otters declined, the sea urchin populations grew, destroying the kelp ecosystem and the many species that depended on it. It was then understood that sea otters were in this ecosystem. Correct Answer: d. a keystone species Question 6 A particular Galápagos finch uses the sharp point of its beak to break open small nuts and the strength of its jaws to crack open larger nuts. When a breeding population is blown onto an island with a choice of either very small nuts or very large nuts, members of the group began to specialize, one group eating only very small or very large nuts, depending upon their beaks. Over time, two stable groups developed, each directed towards its specific niche. This is an example of: Correct Answer: d. Diversifying selection