Cosmos: Some of the Things Molecules Do Name: _____________________________Class:____ 1. Why were some wolves naturally less afraid of humans?

A. They had higher levels of stress hormones. B. They had lower levels of stress hormones. 2. What happened to the wolves who were less afraid of humans?

A. They were hunted and killed more often. C. They attacked humans B. They were weaker. D. They relied on humans to feed them regularly

3. List 4 traits that humans desired in the dogs they breed? 4. What do you call it when humans select the mates for animals?

A. Artificial selection B. Natural selection 5. How long did it take humans to turn grey wolves into all the kinds of dogs we have today?

A. 15 - 20 years C. 1500 - 2000 years B. 150-200 years D. 15,000-20,000 years

6. The plants and animals we eat today all came from wild, __________edible ancestors. 7. During the last ice age, the polar ice cap extended from the North Pole to...

A. Orlando C. Austin B. Los Angeles D. Fremont

8. What caused the fur color in bears to change?

A. Mutation C. Poor diet B. Exposure to harmful uv radiation D. They dyed their fur.

9. What color bear gets the most food by hunting in the arctic?

A. Brown B.. White 10. Which bear is more likely to pass its genes on to offspring? (in the arctic)

A. Brown B. White 11. What happens to the dark fur gene over time? ________________________________________ 12. Why did the brown bears and white bears eventually turn into different species? 13. Do populations or individual organisms evolve?

A. Individuals B. Populations 14. When the environment selects which traits are best it is called...

A. Artificial selection B. Natural selection 15. According to the video, what other species, besides chimpanzees do we share similar DNA with?

A. Other mammals such as wolves. B. Just about everything. Butterflies, wolves, mushrooms, Sharks, bacteria and sparrows to name a few.

16. When it comes to the genetic instructions for life's most basic functions, such as digesting sugars, we and other species are almost ___________________.

17. Which human organ was thought to be too complicated to have evolved? _______________ 18. Which mutation began the evolution of sight?

A. The production of a protein molecule that absorbs sunlight C. The development of a retina B. The formation of a lens D. A spherical structure that captured light

19. Why did bacteria with the light sensing protein survive in greater numbers than those without it?

A. Those without the light sensing protein couldn't reproduce as fast B. Those without the light sensing protein were harmed by harmful UltraViolet radiation and were killed

because they were too close to the surface of the water. 20. The flatworm evolved a dimple indentation that helped it...

A. capture more light. B. distinguish light from shadow. 21. Where did eyes originally evolve, on land or in the water?

A. Land B. Water 22. What caused the first mass extinction at the end of the Permian Era?

A. Volcanic eruptions in Siberia C. Ice Age B. Meteor impact D. Extreme Ultra Violet Radiation

23. How was the Earth different then (in the Permian Era)?

A. One super continent C. All of the above B. One great ocean

24. What type of animals ruled the Earth after the first extinction? _____________________________________ 25. What organism has survived all the mass extinctions? It can live in boiling water, freezing water, without water, and in space.

A. Bacteria C. Tribolites B. Tardigrade D. Cockroaches

26. How long has this organism been in existence?

A. 1000 years C. A couple of million of years B. 1,000,000 years D. 1/2 a billion years

27. How is Titan (Saturn's giant moon) different than Earth? (Circle all that apply)

A. It's atmosphere is made mostly of nitrogen. C. It is colder B. There is no oxygen D. It is warmer

28. What are rivers, rain and lakes made of on Titan?

A. Methane and ethane C. Nitrogen B. Water D. Carbon Dioxide

29. Do we know how life got started? Why? 30. Where is life thought to have started?

A. In cold water B. In hot water next to volcanic vents 31. How old is life on Earth?

A. 4 million years old B. 4 billion years old

Cosmos: Some of the Things Molecules Do Name:keykeykeykeykeykeyClass:_____ 1. Why were some wolves naturally less afraid of humans?

A. They had higher levels of stress hormones. B. They had lower levels of stress hormones. 2. What happened to the wolves who were less afraid of humans?

A. They were hunted and killed more often. C. They attacked humans B. They were weaker. D. They relied on humans to feed them regularly

3. List 4 traits that humans desired in the dogs they breed? Cuteness, Hunting, Herding, Affection, Guarding, Hauling 4. What do you call it when humans select the mates for animals?

A. Artificial selection B. Natural selection 5. How long did it take humans to turn grey wolves into all the kinds of dogs we have today?

A. 15 - 20 years C. 1500 - 2000 years B. 150-200 years D. 15,000-20,000 years

6. The plants and animals we eat today all came from wild, __less__edible ancestors. 7. During the last ice age, the polar ice cap extended from the North Pole to...

A. Orlando C. Austin B. Los Angeles D. Fremont

8. What caused the fur color in bears to change?

A. Mutation C. Poor diet B. Exposure to harmful uv radiation D. They dyed their fur.

9. What color bear gets the most food by hunting in the arctic?

A. Brown B. White 10. Which bear is more likely to pass its genes on to offspring? (in the arctic)

A. Brown B. White 11. What happens to the dark fur gene over time? It decreases/disappears. Video states: “loses out”. 12. Why did the brown bears and white bears eventually turn into different species? They separated and and over thousands of years evolved other characteristics that set them apart. 13. Do populations or individual organisms evolve?

A. Individuals B. Populations 14. When the environment selects which traits are best it is called...

A. Artificial selection B. Natural selection 15. According to the video, what other species, besides chimpanzees do we share similar DNA with?

A. Other mammals such as wolves. B. Just about everything. Butterflies, wolves, mushrooms, Sharks, bacteria and sparrows to name a few.

16. When it comes to the genetic instructions for life's most basic functions, such as digesting sugars, we and other species are almost identical. .

17. Which human organ was thought to be too complicated to have evolved? The Eye. 18. Which mutation began the evolution of sight?

A. The production of a protein molecule that absorbs sunlight C. The development of a retina B. The formation of a lens D. A spherical structure that captured light

19. Why did bacteria with the light sensing protein survive in greater numbers than those without it?

A. Those without the light sensing protein couldn't reproduce as fast B. Those without the light sensing protein were harmed by harmful UltraViolet radiation and were

killed because they were too close to the surface of the water. 20. The flatworm evolved a dimple indentation that helped it...

A. capture more light. B. distinguish light from shadow. 21. Where did eyes originally evolve, on land or in the water?

A. Land B. Water 22. What caused the first mass extinction at the end of the Permian Era?

A. Volcanic eruptions in Siberia C. Ice Age B. Meteor impact D. Extreme Ultra Violet Radiation

23. How was the Earth different then (in the Permian Era)?

A. One super continent C. All of the above B. One great ocean

24. What type of animals ruled the Earth after the first extinction? Dinosaurs. 25. What organism has survived all the mass extinctions? It can live in boiling water, freezing water, without water, and in space.

A. Bacteria C. Tribolites B. Tardigrade D. Cockroaches

26. How long has this organism been in existence?

A. 1000 years C. A couple of million of years B. 1,000,000 years D. 1/2 a billion years

27. How is Titan (Saturn's giant moon) different than Earth? (Circle all that apply)

A. It's atmosphere is made mostly of nitrogen. C. It is colder B. There is no oxygen D. It is warmer

28. What are rivers, rain and lakes made of on Titan?

A. Methane and ethane C. Nitrogen B. Water D. Carbon Dioxide

29. Do we know how life got started? Why? No, most of the evidence has been destroyed by impact and/or erosion 30. Where is life thought to have started?

A. In cold water B. In hot water next to volcanic vents 31. How old is life on Earth?

A. 4 million years old B. 4 billion years old