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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

L Sci-Ch 6 #2

study guide

Explain the differences between genes and DNA. (ESSAY) Genes tell you traits; DNA is more detailed - DNA makes up genes.
What is made up of subunits called nucleotides? DNA
The 4 nucleotides of DNA are….. adenine and thymine (A & T); and cytosine and guanine (C & G)
The 4 nucleotides of RNA are…. adenine and uracil (A & U); and cytosine and guanine (C & G)
Determines how tall you are or whether your hair is curly or straight. proteins
Which pair of nucleotides in DNA pair together? adenine and thymine; cytosine and guanine
Which pair of nucleotides in RNA pair together? adenine and uracil; cytosine and guanine
Sugar, phosphate and nitrogenous base is called….? a nucleotide
Who discovered the adenine in DNA always equals the thymine? Erwin Chargaff
Who used x-ray diffraction to take first image of DNA? Rosiland Franklin
What does DNA look like? a double helix (twisted ladder)
Where is DNA found in the cell? in nucleus/in bundles called chromosomes
Explain the difference between RNA and DNA. (ESSAY) RNA has one strand, DNA has two strands. RNA is a temporary copy of DNA
What is RNA? it is a mirror copy of DNA
Three nitrogenous bases form... codes for specific amino acids
A mutagen is…... physical or chemical agent that causes a mutation
A mutation is…... caused by a mutagen or random error
Describe the insertion mutation a base is added
When scientists transfer individual genes from one organism to another. genetic engineering
What is the first step in making a protein? RNA copying DNA
Organelle where proteins are synthesized by mRNA and tRNA ribosome
String of nucleotides that gives cell information on how to make specific trait gene
Material is made of amino acids that causes most of the differences we see in organisms. protein
DNA is split down the middle during….. replication
Chemical parts that are transferred by tRNA and matched to mRNA amino acids
Makes up each nucleotide in a DNA molecule sugar, phosphate, base
Part of a chromosome gene
Created by: msparks



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:
restart all cards