Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.

Remove Ads

Review of chapters 1-5

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.

The number of individuals of a single species per unit area   population density  
scientific study of human populations   demography  
average year after year conditions   climate  
trapping heat energy and maintaining temperature   greenhouse effect  
individual,population,community,ecosystem,biome,biosphere   how organisms range in complexity  
individual related to others like it   species  
one who eats producers   consumers  
process to use the sun to provide nourishment for plants   photosynthesis  
the main source for all life   the sun  
an acidic soluiton   pH below 7  
Four groups of organic compounds   carbohydrates, lipids, proteins and nucleic acids  
living things use this for their main source of energy   carbohydrates  
These organic compounds control the rate of reactions, build tissue and transport materials to help fight disease   proteins  
Chemical reactions always involve this in reactants   breaking of bonds  
chemical reactants always involve this in products   forming new bondscells use these to speed u  
cells use these to speed up chemical reactions   enzymes  
the goal of science   to observe and study nature  
the theory that life arises from non-living   spontaneous generation  
the smallest unit of life   cell  
the study of life   biology  
reproduction involving only one parent   asexual reproduction  
a much tested hypothesis   theory  
an idea to be tested   hypothesis  
How many variables should be changed at one time when testing a hypothesis?   one  
Living things share characteristics such as   growth and development and maiintaining an internal stability  


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
Created by: vickiPA