Biological Sciences Quiz 1 (20 MCQs)

Quiz Instructions

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1. Organisms that have the most DNA sequences in common

Correct Answer: D) Are the most related.

2. What is the special structure of an arthropod that provides structure and protection from the outside?

Correct Answer: C) An exoskeleton.

3. It is where all of the genetic information stored inside of a cell.

Correct Answer: A) Nucleus.

4. All the ..... are included in kingdom animalia.

Correct Answer: D) Animals.

5. Invertebrates are the animals which do not have.

Correct Answer: B) A back-bone.

6. The branch of biology that deals with the classification and naming of living things is called.

Correct Answer: A) Taxonomy.

7. What do you call a single-celled organism?

Correct Answer: B) Unicellular.

8. The most prominent kingdom were humans belong?

Correct Answer: C) Animalia.

9. What phyla contains earthworms?

Correct Answer: D) Annelida.

10. What are the monomers (building blocks) of CARBOHYDRATES?

Correct Answer: A) Monosaccharides (simple sugars).

11. Organisms, like sponges, lacking body tissues and body symmetry belong to which of the following phyla?

Correct Answer: D) Porifera.

12. The structure of DNA was elaborated by Watson and Crick in.

Correct Answer: C) 1953.

13. Known as the powerhouse of the cell

Correct Answer: B) Mitochondria.

14. The cell consists of a nucleus, which is surrounded by a jelly-like substance called the.

Correct Answer: C) Cytoplasm.

15. An anatomical feature that no longer seams to have a purpose in the current form of an organism

Correct Answer: C) Vestigial structure.

16. The total pregnancy in human female is usually about nine months or .

Correct Answer: D) 280 days.

17. Where does an off spring get its traits in asexual reproduction?

Correct Answer: B) From only one parent.

18. Isoenzymes are different forms of ..... with slight changes in molecular structure.

Correct Answer: C) Enzyme.

19. The trachea leads to the .....

Correct Answer: B) Bronchus.

20. What is the advantage of having different shaped beaks?

Correct Answer: B) To be able to eat the food readily available in the environment.