DNA Test Review

Has the base Uracil (U)

• DNA

• RNA

• Both

the label 2 is ....

• Phosphate

• Dioxyribose

• Adenine

• Nitrogen bases

How does the central dogma of molecular biology describe the flow of genetic information in a cell?

• DNA -> RNA -> Proteins
• Proteins -> DNA -> RNA
• RNA -> DNA -> Proteins
• There is no specific order of these molecules

Which of the following is true about mutation and recombination?

• Mutation is a random change in DNA, while recombination is a rearrangement of DNA that happens naturally.

• Mutation is a rearrangement of DNA, while recombination is a random change in DNA.

• Mutation happens naturally, while recombination is a random change in DNA.

• Mutation and recombination both involve the movement of DNA between chromosomes.

Which nitrogenous bases are found in RNA?

• cytosine, guanine, adenine, thymine
• cytosine, adenine, thymine, uracil
• adenine, uracil, guanine, cytosine
• thymine, adenine, uracil, cytosine

What type of bond holds the nitrogenous bases together in the middle of the DNA molecule?

• hydrogen bond
• Covalent bonds

• Phosphodiester bonds

• Hydrogen bonds

Nucleotide

• DNA

• RNA

• Both

Is the newly synthesized DNA strand identical to the original template strand?

• Yes, it is an exact copy

• No, it is complementary to the template strand

• Yes, it is identical except for the sugar

• No, it only contains part of the original DNA

Which of the following lists all the bases found in DNA?

• A. Adenine, Thymine, Cytosine, Uracil

• B. Adenine, Thymine, Cytosine, Guanine

• C. Adenine, Thymine, Cytosine, Ribose

• D. Guanine, Uracil, Thymine, Ribose

Which of the following is NOT a nitrogenous base found in DNA?

• A. Adenine

• B. Cytosine

• C. Thymine

• D. Uracil