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.

Life Science 7H Study Guide: DNA (dedicated to Katie Shutler)

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

Question
Answer
Within the nucleus, the DNA and the proteins it winds around is called a   chromosome  
🗑
DNA is made up of a subunit called?   nucleotides  
🗑
The nucleotides that DNA is made of is made of 3 things?   sugar, phosphate, and a base  
🗑
Watson and Crick built a DNA model that looks like what?   a twisted ladder  
🗑
The sides of the ladder are made of 2 things?   sugar and phosphate  
🗑
The rungs of the ladder are made of a pair of   bases  
🗑
What letters represent the 4 bases?   A, C, T, and G  
🗑
In DNA, The base Thymine (T) always pairs with?   Adenine (A)  
🗑
In DNA, the base Cytosine (C) always pairs with?   Guanine (C)  
🗑
When DNA is copied, the DNA molecule splits how?   down the middle  
🗑
What is a mutation?   a change in the nucleotide-base sequence  
🗑
What is RNA?   plays a role in protein production  
🗑
What base is found in RNA but not DNA?   Uracil (U)  
🗑
What is a ribosome?   organelle composed of RNA and protein  
🗑
How many bases form an amino acid?   3  
🗑
How much DNA is in each one of your cells?   2 m  
🗑
What organelle reads the code from mRNA to make protein?   ribosomes  
🗑
What is DNA?   molecule that contains infor that determines the traits that a living thing inherits  
🗑
What is a nucleotide?   subunit that consists of a sugar, a phosphate, and a nitrogenous base in a nucleic-acid chain  
🗑
What are chromosomes made out of?   DNA and proteins  
🗑
Inherited characteristics are determined by?   genes  
🗑
structures made of protein and DNA and found in the nucleus of cells are?   chromosomes  
🗑
What two things must the material tha makes up genes be able to do?   give instuctions for building and maintaining cells and be able to be copied.  
🗑
Why must genes be copied each time a cell divides?   each cell contains identical genes  
🗑
What allows the genetic material for genes to give instructions and be copied before a cell divides?   the structure of DNA  
🗑
What does a nucleotide in a nucleic acid charin consist of?   sugar, phosphate, and base  
🗑
Rosalind Franklin   used X rays to make images of the DNA molecule, suggesting that DNA has a spiral shape  
🗑
Watson and Crick   built a model of DNA that helped explain how DNA is copied and functions  
🗑
Erwin Chargaff   found that A is always = to T and G is always = to C in DNA  
🗑
The twisted shape of DNA is called a?   double helix  
🗑
The two sides of the double helix DNA ladder are made of alternating sugar and ___ parts.   phosphate  
🗑
The rungs of the double helix ladder are made of a pair of   bases  
🗑
The pairing of bases allows the cell to __, or make copies of DNA   replicate  
🗑
In a DNA molecule, pairs of bases are__ to each other   complementary  
🗑
As a DNA molecule splits, what is added to the exposed bases on the original molecule?   complementary nucleotides  
🗑
What does the job of unwinding, copying, and rewinding the DNA?   proteins  
🗑
What is chromatin?   long strands of DNA and proteins  
🗑
What forms the code that carries the info for DNA?   the order of bases on one side of DNA  
🗑
The chemical triggers and messangers within the cell are   proteins  
🗑
mRNA   mirrorlike copy of one side of the segment of DNA containing a gene  
🗑
tRNA   molecules that picke up specific amino acids from the cytoplasm, whose bases match up with bases on mRNA  
🗑


   

Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
 
To hide a column, click on the column name.
 
To hide the entire table, click on the "Hide All" button.
 
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
 
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.

 
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
Popular Science sets