DNA - The Double Helix Questions
What is a gene?
section of DNA, codes for a trait
What are the "rungs" of the DNA ladder made of?
4 types of nitrogen base
How do the bases bond together?
A bonds with T G bonds with C
The two purines in DNA are
Adenine and Guanine
What are the sides of the DNA ladder made of?
Alternating sugar & phosphate molecule
Why is DNA called the "Blueprint of life"?
Contains the instructions for building an organism
Why is RNA necessary to act as a messenger?
DNA does not leave the nucleus, pores are too small
What sugar is found in DNA? RNA?
DNA- deoxyribose RNA- fibroses
Write out the full name for DNA.
Deoxyribonucleic acid
What is the shape of DNA?
Double Helix
Why can't the codes be taken directly from the DNA?
Its too big to go through nuclear pores.
What two scientists established the structure of DNA?
James Watson & Francis Crick
DNA can be found in what two organelles beside the nucleus?
Mitochondria and Chloroplast
DNA is made of repeating units called
Nucleotides
Where in the cell are chromosomes located?
Nucleus
What is the difference between intros and exons?
One codes and one does not
Proteins are made where in the cell?
Ribasomes
What does semiconservation mean?
When the DNA is ready to copy.