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BILD3quiz1 - diversity during the Cambrian Explosion 5(1...

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BILD 3, Fall 2005 Name: _______________________ Quiz #1 (B) 1. (2 pts) Scientists discover a fossil and want to know how old it is. They analyze the 14 C: 12 C ratio, and find that there is 1/16 as much 14 C as 12 C. If the half-life of 14 C is 5700 years, how old is the fossil? (show your work) 2. (2 pts) List the four steps necessary through which scientists believe that the early chemical and physical conditions on Earth produced simple cells. 3. a. (1 pts) The extinction event that saw the extinction of many large creatures and marked the end of the Cretacous period is also known as _____________________. b. (1 pts) What most likely triggered this event, and what is the evidence supporting this? 4. (1 pts) What are 2 possible reasons for the sharp apparent increase in species
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Unformatted text preview: diversity during the Cambrian Explosion? 5. (1 pts) What cell structure is common to both prokaryotes and eukaryotes? a. nuclear envelope b. endoplasmic reticulum c. Golgi apparatus d. none of the above 6. (2 pts) Joe used to be a scrawny and out of shape, but decided to start going to the gym daily and, due to hard work, can now bench over 300 lbs. Mary Jane walks by and sees this and says to herself, “If I marry Joe, my babies will be extra strong!” In relation to inheritance, what is wrong with Mary Jane’s reasoning? Be sure to also mention the famous scientist who incorrectly proposed a similar idea....
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