Molecular Biology Self-Assessment

Please answer all questions then click the button at the bottom of the page to have your answers checked.

1. This is the structural and functional unit of all known living organisms?
 The cell
 Organelles
 Nucleolus
 RNA

2. The following are all examples of organelles except?
 Nucleus
 Mitochondria
 Golgi apparatus
 DNA

3. DNA is stored in what organelle?
 Ribosome
 Nucleus
 cytoskeleton
 Mitochondria

4. Which of the following is not an example of a base used to form DNA?
 Guanine
 Adenine
 Cytosine
 Uracil

5. Which nucleotide base pairs with Thymine?
 Guanine
 Adenine
 Cytosine
 Uracil

6. The "Double Helix" is a structure formed from what molecule.
 DNA
 RNA
 Protein
 None of the above

7. A gene is a specific sequence of nucleotides that encodes instructions for making a specific protein.
 True
 False

8. What molecule is generated through a process called transcription?
 DNA
 mRNA
 Protein
 A nucleotide

9. The following is the "Central Dogma"
 RNA to DNA to protein
 DNA to RNA to protein
 Protein to RNA to DNA
 RNAS to protein to DNA

10. Which of the following is needed to generate new cells or pass genes onto new organisms by heredity?
 Procaryotes
 DNA replication
 Love and marriage
 None of the above

11. Denaturation, or unwinding of the DNA, is not required for transcription.
 True
 False

12. Transfer RNA (tRNA) and amino acids are needed for what stage of the central dogma?
 DNA to RNA
 DNA to protein
 RNA to protein
 protein to DNA

13. Many proteins are enzymes that catalyze biochemical reactions
 True
 False

14. Mutations, or changes in the DNA, can be which of the following?
 Advantageous
 Deleterious
 Have no effect
 All of the above

15. The occurrence of one or more extra or missing chromosomes, leading to an unbalanced chromosome complement, is known as:
 Diploidy
 Polyploidy
 Anueploidy
 Tetraploidy

16. These checkpoints are mechanisms that control the proper cell division in eukaryotic cells:
 Spindle, or mitotic
 Straight, or mitotic
 Circle, or mitotic
 Linear, or mitotic

17. The loss of a part of the chromosome or DNA sequence is referred to as:
 Insertion
 Deletion
 Substitution
 Addition

18. The production of multiple copies of a region of DNA that contains a gene is referred to as:
 Deletion
 Insertion
 Duplication/Amplification
 Addition

19. When a portion of one chromosome is transferred to a nonhomologous chromosome it is referred to as:
 Chromosomal translocation
 Chromosomal relocation
 Chromosomal deletion
 Chromosomal insertion

20. When a piece of chromosome breaks off and reattaches in the reverse direction it is referred to as:
 Chromosomal deletion
 Chromosomal translocation
 Chromosomal inversion
 Chromosomal substitution


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