DNA and Protein Synthesis Review

1. Which of the following is a nucleotide found in DNA?

• ribose + phosphate group + thymine
• ribose + phosphate group + uracil
• deoxyribose + phosphate group + uracil
• deoxyribose + phosphate group + cytosine

2. Where is the code found on a DNA molecule?

• alternating phosphate groups
• structure of ribose sugar
• structure of deoxyribose sugar
• sequence of nitrogenous bases

3. Because of the base pairing rules in DNA, the amount of

• A bases in DNA is equal to the amount of G bases.
• A bases in DNA is equal to the amount of T bases.
• T bases in DNA is equal to the amount of U bases.
• C bases in DNA is equal to the amount of T bases.

4. What is a difference between DNA and RNA?

• DNA is triple stranded and RNA is double stranded
• DNA is made of nucleotides and RNA is made of amino acids
• DNA has deoxyribose and RNA has Ribose as sugars
• DNA has Uracil and RNA has Thymine

5. Why is DNA replication important for the process of cell division?

• It helps to produce two cells with different DNA.
• It makes protein synthesis more efficient.
• It divides the chromosome number in half.
• It helps to produce two cells with identical DNA copies.

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6. The order of the nitrogenous bases found on DNA determine the production of which molecule?

• carbohydrates.
• phosphates.
• proteins.
• lipids.

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7. DNA is double stranded, while RNA is ______________ .

• double stranded
• single stranded
• triple stranded
• quadruple stranded

8. What process is represented in image?

• DNA replication
• Protein Synthesis
• DNA synthesis
• DNA Transcription

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9. Which letter corresponds to the structure that houses the DNA and where transcription occurs.

• A
• B
• C
• D

10. Structures B & G are the same. This structure results from transcription and is translated. What is this structure called?

• mRNA
• DNA
• tRNA
• Ribosome

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