Name: 

Protein Synthesis



Completion
Complete each sentence or statement.
 

1. 

In eukaryotes, gene expression is related to the coiling and uncoiling of ____________________.
 

 

2. 

A DNA subunit composed of a phosphate group, a five-carbon sugar, and a nitrogen-containing base is called a(n) ____________________.
 

 

3. 

The name of the five-carbon sugar that makes up a part of the backbone of molecules of DNA is ____________________.
 

 

4. 

Knowing the order of the bases in a gene permits scientists to determine the exact order of the amino acids in the expressed ____________________.
 

 

5. 

Due to the strict pairing of nitrogen base pairs in DNA molecules, the two strands are said to be ____________________ to each other.
 

 

6. 

According to base-pairing rules, adenine pairs with ____________________ and guanine pairs with ____________________.
 

 

7. 

The enzyme that is responsible for replicating molecules of DNA by attaching complementary bases in the correct sequence is ____________________.
 

 

8. 

Enzymes called ____________________ are responsible for unwinding the DNA double helix by breaking the hydrogen bonds that hold the complementary strands together.
 

 

9. 

The process by which DNA copies itself is called ____________________.
 

 

10. 

Molecules of ____________________ carry instructions for protein synthesis from the nucleus to the cytoplasm.
 

 

11. 

The nitrogen-containing base that is found only in RNA is ____________________.
 

 

12. 

The enzyme responsible for making RNA is called ____________________.
 

 

13. 

The form of ribonucleic acid that carries genetic information from the DNA to the ribosomes is ____________________.
 

 

14. 

A ____________________ is a sequence of DNA at the beginning of a gene that signals RNA polymerase to begin transcription.
 

 

15. 

Messenger RNA is produced during the process of ____________________.
 

 

16. 

Of the 64 codons of mRNA, 61 code for ____________________, 3 are ____________________ signals, and one is a ____________________ signal.
 

 

17. 

Nucleotide sequences of tRNA that are complementary to codons on mRNA are called ____________________.
 

 

18. 

The sequence of three nucleotides that code for specific amino acids or stop signals in the synthesis of protein is called a(n) ____________________.
 

 

19. 

The information contained in a molecule of messenger RNA is used to make protein during the process of ____________________.
 

 

20. 

During translation, amino acids are brought to the ribosomes by molecules of ____________________.
 

 



 
Check Your Work     Reset Help