Save
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

Biology 2 exam set 2

1st 9 wks exam chapter 2

QuestionAnswer
FIB: who is the first Greek philosopher to use atoms Demaritis
basic unit of matter atom
FIB: positively charged particles protons
FIB: these particles carry no charge neutrons
FIB: negatively charged particle electrons
FIB: More than ___elements are known 100
FIB: about ________ elements are found in living organisms 2 dozen
FIB: the sum of protons and neutrons in the nucleus of an atom mass number
FIB: name the two main types of chemical bonds ionic bond and covalent bond
FIB: an atom that loses electrons has a ______charge positive
FIB: an atom that gains electrons has a ________charge negative
molecule in which the charges areunevenly distributed polar molecule
FIB: one of the forces that draw water out of the roots of a plant and up to its stems and leaves capillary action
FIB: study of all compounds that contain bonds between carbon atoms organic chemistry
FIB: carbon atom can bond to other carbon atoms which gives carbon the ability to form chains which are _____________ in length unlimited
name the four groups of organic compounds carbohydrates, lipds, proteins, mucleic acids
FIB living things need that store extra sugar as complex carbohydrates starches
two kinds of nucleic acids RNA and DNA
FIB: more than ___ different amino acids in nature 20
FIB: in order to stay alive, organisms need to carry out ________ that require energy reactions
FIB: Enzymes produced by human cells generally work best at temperatures as ____ which is normal temperature for the body. 37degrees Celsius
Created by: brandon_kyle10
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