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DNA Replication & Protein Synthesis Name: ________________ (To find answers refer your notes & textbook) Period: __________ Word Bank
- The double coiled shape of DNA is called a ____________ _______________.
- In order for DNA to begin replication ____________ _______________
between nitrogen bases must break.
- DNA has ________ strands.
- DNA nucleotides consist of 3 parts:
a. _______________ _______________
b. _______________ _______________ &
c. _______________ _______________
- Nitrogen bases in the DNA sequence code for______________________.
- The end result of DNA replication is two _______________ double helixes.
- In DNA, the nitrogen bases are: adenine; cytosine, guanine & ______________.
- In RNA, the nitrogen bases are: adenine; cytosine, guanine & ______________.
- ____________________ is the DNA process that produces a new copy of an
organism’s genetic information to pass on to a new cell.
- Thymine forms a hydrogen bond with __________________ and guanine forms a
hydrogen bond with _______________________.
thymine replication cytosine phosphate group proteins identical double helix uracil nitrogen base two deoxyribose sugar hydrogen bonds adenine
Label the diagram of DNA replication. Use the following word bank.
base pair phosphate deoxyribose hydrogen bonds nucleotide nitrogen base
Complete the following chart on the 3 chemical differences between DNA and RNA.
Structure DNA RNA
- Number of strand(s)
- (^) Name of Sugar
- Names of the 4 nitrogen bases
______ 26. Turning DNA into RNA is called: a. replication b. transcription c. translation d. mutation
______ 27. Which of the following transcriptions is correct? A. TACGACTAGATC UUGCUGUUCUUG B. TACGACTAGATC ATGCTGATCTAG C. TACGACTAGATC CGTACGTACCGA D. TACGACTAGATC AUGCUGAUCUAG
______ 28. A codon is a. a series of 3 nitrogen bases that code for an amino acid b. a series of 4 nitrogen bases that code for an amino acid c. a character on the TV series Star Trek d. when you put your coat on
______ 29. Which type of RNA leaves the ribosome in search of nucleotides in the cytoplasm and brings them back to the ribosome for protein synthesis? a. tRNA b. rRNA c. mRNA d. zRNA
- The 3 nucleotides that tRNA find and bring back to the ribosome are called the _____-codon.
- The anti-codon and codon bond together by peptide bonds and form long chains of ________ ______.
Matching. Use the key terms and match them with their definition.
a. transcription (p. b. translation c. tRNA d. mRNA e. codon
______ 32. This is a set of 3 nitrogen bases used to make amino acids. ______ 33. This happens when mRNA uses a copied DNA code to make protein. ______ 34. This brings amino acids to ribosomes. ______ 35. This carries the copied DNA code out to the cytoplasm. ______ 36. This happens when RNA unzips from the DNA code.
______ 37. A mutation is any mistake or change in the a. RNA sequence b. DNA sequence c. Ribosomes d. Nucleus
______ 38. After breaking away from the original strand of DNA during transcription, RNA becomes which type of RNA? a. tRNA b. mRNA c. rRNA d. zRNA
______ 39. The codons of 3 nitrogen bases in the mRNA strand codes for what? a. amino acids b. sugars c. fats d. dairy
