Central Dogma of Life

1. Which of the following regarding the basic mechanism of gene expression is correct?

• a. DNA ―> RNA ―> protein

• b. DNA ―> protein ―> RNA

• c. RNA ―> DNA ―> mRNA ―> protein

• d. RNA ―> DNA ―> tRNA ―> protein

2. A base sequence of one strand AATTCG has a complementary base strand of ______

• a. AATTCG

• b. TTAACG

• c. TTAAGC

• d. TTGGAC

3. Which of the following statements is NOT true?

• a. DNA is transcribed to RNA

• b. Proteins are transcribed to DNA

• c. Proteins are made up of amino acids

• d. RNA and DNA are made up of nucleotides

4. In the nucleus, DNA is first ____ into an RNA molecule.

• a. Translated

• b. Transcribed

• c. Transferred

• d. Transmitted

5. In the cytoplasm, RNA is ____ into an amino acid chain, which folds to become a protein.

• a. Translated

• b. Transcribed

• c. Transferred

• d. Transmitted

6. Which enzyme is involved in the synthesis of the RNA over a DNA template?

• a. DNA polymerase

• b. RNA polymerase

• c. DNA helicase

• d. RNA helicase

7. RNA makes protein through _______

• a. Repair

• b. Replication

• c. Transcription

• d. Translation

8. Which of the following statements about DNA and RNA is incorrect?

• a. Both have cytosine as a base

• b. Both are composed of a nitrogenous base

• c. The DNA copies specific instructions from the RNA

• d. DNA is a double-stranded helix, while RNA is a single-stranded helix

9. Which type of RNA carries genetic information from DNA to the ribosomes?

• a. messenger RNA

• b. mitochondrial RNA

• c. ribosomal RNA

• d. transfer RNA

10. If the DNA polymerase is in contact with cytosine in the parent strand, what complementary base will be added to the daughter strand?

• a. Adenine

• b. Guanine

• c. Thymine

• d. Uracil