A
B
C
D
E
1
Identify structure A.
ribosome
1
The genetic code is found in the order of nitrogen ____________ along a gene.
bases
1
Cancer can spread when cells break off of a tumor and are carried through the body by the ______________
bloodstream
1
In RNA, adenine pairs with _________.
uracil
1
During DNA replication, adenine (A) always pairs with
thymine (T)
2
How many different types of cancer are there?
over 100
2
What is chemotherapy?
the use of drugs to treat a disease
2
Identify structure E.
tRNA
2
Any change in the DNA of a gene or chromosome is called a(n) _________________
mutation
2
Identify structure C.
mRNA
3
Identify structure D.
amino acid
3
Where in the cell does DNA replication take place?
nucleus
3
What is a cancer tumor?
a mass of abnormal cells
3
Cancer is a disease in which cells
grow and divide uncontrollably
3
A set of three bases, codes for one specific ____________ in a protein.
amino acid
4
During DNA replication cytosine (C) always pairs with
guanine (G)
4
What are the three nitrogen bases in transfer RNA that pair with bases U-C-A in messenger RNA?
AGU
4
What determines what amino acids are put together to form a protein?
Order of bases along a gene.
4
Identify structure B.
protein chain
4
Scientists think cancer begins when
a mutation disrupts the normal cell cycle
5
The sides of a DNA molecule are made up of alternating sugar and ____________ molecules.
phosphate
5
Where does protein synthesis take place?
on the ribosomes in the cytoplasm of the cell
5
What carries amino acids to the ribosome and adds them to the growing protein?
tRNA
5
What are the 4 bases found in RNA?
adenine
uracil
guanine
cytosine
5
What does messenger RNA do during protein synthesis?
copies the DNA message from inside the nucleus and takes it to the ribosomes in the cytoplasm.