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Life in the Universe Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1.

Which of the following is an example of analogous structures or traits?

I. Leg bones of a human and leg bones of a penguin

II. Wing of a penguin and wing of a mosquito

III. Beak of a penguin and beak of a duck

Question 2 2. Which planets' moons are believed to have liquid water?

Question 3 3. A scientist has observed animals in a particular habitat for some time. She notices that in a population of birds those with either short or long beaks can find more food than those with average sized beaks. Over time, she notices a higher proportion of birds in the population have either short or long beaks. She is observing:

Question 4 4. The Archean and Proterozoic eons are grouped together as the:

Question 5 5.

Which of the following is an example of a homologous structure or trait?

I. Arm bones of a human and wings of a bird

II. Wing of a penguin and wing of a mosquito

III. Beak of a penguin and beak of a duck

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Question 6 6. How long ago did the Big Bang occur?

Question 7 7. What does a red-shift prove?

Question 8 8. Which of the following forces is LEAST likely to cause a new species to arise in a population?

Question 9 9. What 'kind' of life is thought to possibly exist in our solar system in places other than Earth?

Question 10 10. When was our sun and Milky Way Galaxy formed?

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Question 11 11. Small, non-living droplets that can regulate their internal environments are best known as _____

Question 12 12. How does an eon differ from an era?

Question 13 13. A scientist has observed animals in a particular habitat for some time. She notices that the slowest gazelles tend to fall victim to predators more frequently than faster ones. Over time, she notes that the gazelle herd on average runs faster. She is observing:

Question 14 14. What is the only planet in our solar system, other than Earth, that may have had life at some point in its history?

Question 15 15. When did the Big Bang theory first originate and with whom?

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Question 16 16. Which of the following is NOT a principle of Darwin's theory of evolution?

Question 17 17. What is a singularity?

Question 18 18. Some studies have shown that a single copy of the cystic fibrosis disease allele can confer resistance to tuberculosis to a person. This is an example of:

Question 19 19. Why do many geologists study layers of strata?

Question 20 20. A scientist notices several birds in the same area that are similar in appearance with the exception of different beak lengths. She observes that one type of bird with a particularly long beak can pick bugs out of holes in the ground, while the birds with shorter beaks cannot. The longer beak is an example of

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Question 21 21. What scientist is credited with the idea that early life on Earth formed through a series of reactions that made simple compounds gradually more complex?

Question 22 22.

Which of the following statements does NOT represent the idea of acquired characteristics?

I. A body builder develops stronger muscles during the course of his life, so his son will be strong as well.

II. A cat that lost its tail will produce offspring with shorter tails.

III. Neck length in a giraffe population increased over time since taller giraffes had a competitive advantage over shorter giraffes.

Question 23 23. What is cosmic background radiation?

Question 24 24. 100 billion years from now, what will have happened to current galaxies?

Question 25 25. Six billion years after the Big Bang, within galaxies, stars are born and die, often in enormous explosions called _____. The explosions of these stars distribute common elements, such as oxygen, carbon, nitrogen, calcium, and iron into space.

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Question 26 26. Which of the following is an example of convergent evolution?

Question 27 27. The Mesozoic Era was the Age of Dinosaurs, and the current Cenozoic Era is the Age of _____.

Question 28 28.

Which of the following is an example of natural selection?

I. Albino animals are rare in nature because they are easy for predators to find.

II. The fastest gazelle is least likely to be eaten by a lion.

III. The gorilla that is strong enough to become alpha male is the most likely to pass on his genes.

Question 29 29. What type of event separates the Paleozoic, Mesozoic, and Cenozoic eras from one another in the Phanerozoic eon?

Question 30 30. What is the most basic definition of life?

Life in the Universe Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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