Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Bio Ch 10-12

QuestionAnswer
1. What is a species Share common characteristics and common ancestor
2. What is natural selection Spreads advantageous adaptations through a population over time
3. What is the theory of evolution Species change over time
4. What is the fossil record Shows species have become more complex over time
5. Give an example of a homologous structure Forelimbs of humans, whales, bats
6. What happens when food is scarce in a population Selective pressure increases
7. What is the age of the Earth 4.6 billion years
8. What is a radioisotope Elements that decay (unstable)
9. Which came first DNA or RNA RNA
10. Why are mass extinctions important Impact evolution
11. What is an adaptation Allows an organism to survive better in it’s environment
12. What is a population All the individuals of a species that live in an area
13. How are vestigial structures useful Remnant of an organ that had a function in an ancestor
14. What is catastrophism States floods and earthquakes have happened frequently in Earth’s history
15. How are dogs an example of artificial selection They have been bred by humans for certain traits
16. What are the characteristics of a good index fossil Very common, easy to identify, existed for a brief time, widespread
17. What is the Miller-Urey experiment Energy from lightening may have helped create first organic molecules
18. Be able to calculate half-life Use table
19. What family do we belong to Primates
20. When did Homo sapiens first appear 200,000 years ago
21. How are chloroplasts and mitochondria similar Endosymbiotic
22. Why are insects so successful Reproduce large numbers, fly, feed on nectar
23. Be able to recognize an example of a population Same species in same area
24. How is natural selection possible Requires genetic variation
25. Is evolution fast or slow Gradually (slow) because of natural selection
26. What is a homologous structure Same structures in different organisms
27. Who is Carolus Linnaeus Developed classification system
28. What are the geologic units of time Smallest= epoch, largest =era
29. When did the first land organisms appear Paleozoic Era
30. When did the dinosaurs die, Between what two periods Mesozoic and Cenozoic
31. What is an isotope Elements with different atomic masses
32. What is a half-life Time required for half the number of isotopes to decay
33. What is a mass extinction Death of all members of different species
34. What was Darwin’s theory of natural selection and what four principles must be there for it to happen Organisms best fit survive and reproduce, variation, overproduction, adaptation, and decent with modification
35. What did organisms have to develop in order to move on land Hard outer coverings (exoskeletons)
36. Why is competition within a species so intense Use of the same resources
Created by: evroman
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards