This quiz works best with JavaScript enabled. Home > Science > Biology > Biology – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biology Quiz 18 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Before cells can divide, what must be copied? A) Mitochondria. B) Cytoplasm. C) DNA. D) Cell Wall. Show Answer Correct Answer: C) DNA. 2. The summary at the end of an experiment that explains the results. A) Conclusion. B) Procedures. C) Materials. D) Hypothesis. Show Answer Correct Answer: A) Conclusion. 3. Heterotrophs are also known as: A) Producers. B) Autotrophs. C) Decomposers. D) Consumers. Show Answer Correct Answer: D) Consumers. 4. What are the characteristics of artery? A) Thick, less muscular and elastic. B) Thin, less muscular and less elastic. C) Thin, muscular and less elastic. D) Thick, muscular and elastic. Show Answer Correct Answer: D) Thick, muscular and elastic. 5. When does the duplication of DNA occur? A) Prophase. B) Metaphase. C) Interphase. D) Telophase. Show Answer Correct Answer: C) Interphase. 6. Which cells are alive but lack organelles? A) Xylem cells. B) Tracheid cells. C) Companion cells. D) Sieve tube cells. Show Answer Correct Answer: D) Sieve tube cells. 7. Which of the following correctly lists the levels of organization from least complex to most complex? A) Community, Organism, Population, Ecosystem. B) Population, Community, Ecosystem, Organism. C) Ecosystem, Community, Population, Organism. D) Organism, Population, Community, Ecosystem. Show Answer Correct Answer: D) Organism, Population, Community, Ecosystem. 8. The science of heredity A) Heredity. B) Genetics. C) Trait. D) Gene. Show Answer Correct Answer: B) Genetics. 9. A ..... is composed of a phosphate and glycerol head and 2 fatty acid chain tails. A) Phospholipid. B) Carbohydrate. C) Cholesterol. D) Protein. Show Answer Correct Answer: A) Phospholipid. 10. What organelle is called the "powerhouse" of a cell? A) Endoplasmic Reticulum. B) Nucleus. C) Mitochondria. D) Nucleolus. Show Answer Correct Answer: C) Mitochondria. 11. Appetite is controlled by a centre in which part of the brain? A) The hypothalamus. B) The cerebellum. C) The medulla oblongata. D) The hippocampus. Show Answer Correct Answer: A) The hypothalamus. 12. What are not the advantages of cells being compartmentalized? A) Efficiency of metabolism. B) Toxic / damaging substances can be isolated. C) Localized conditions are idea for metabolic activity. D) Numbers and locations of organelles cannot be changed. Show Answer Correct Answer: D) Numbers and locations of organelles cannot be changed. 13. Molecular Biology is A) The branch of biology that deals with the form of living organisms, and with relationships between their structures. B) The branch of science that deals with microorganisms. C) The branch of biology that deals with the structure and function of the macromolecules essential to life. D) None of above. Show Answer Correct Answer: C) The branch of biology that deals with the structure and function of the macromolecules essential to life. 14. What is the function of the cell wall? A) Allows plants and fungi to grow upward against the force of gravity. B) Keeps energy. C) Takes away sunlight. D) Stores food. Show Answer Correct Answer: A) Allows plants and fungi to grow upward against the force of gravity. 15. An alteration in an organism's characteristics that better enables it to survive in its environment. A) Climate. B) Adaptation. C) Competition. D) Carrying capacity. Show Answer Correct Answer: B) Adaptation. 16. What is NOT TRUE about the cell membrane A) It controls what enters and leaves the cell. B) Semipermeable. C) Phospholipid bilayer. D) Contains digestive enzymes. Show Answer Correct Answer: D) Contains digestive enzymes. 17. How are carbohydrates used in biological processes A) Energy Storage. B) Metabolic Processes. C) Structural Protection. D) All of the above. Show Answer Correct Answer: D) All of the above. 18. Which 2 molecules form the sides (backbone) of the DNA ladder? A) Deoxyribose sugar and adenine. B) Deoxyribose sugar and a hydrogen bond. C) Deoxyribose sugar and the nucleus. D) Deoxyribose sugar and phosphate. Show Answer Correct Answer: D) Deoxyribose sugar and phosphate. 19. Reproduction that involves two cells from different parents unite to produce the first cell of a new organism. A) Asexual. B) Sexual. C) Budding. D) Division. Show Answer Correct Answer: B) Sexual. 20. What is Methane produced by? A) Combustion & Vehicle Exhaust. B) Anaerobic Respiration & Methanogenic Bacteria. C) Evaporation & Transpiration. D) Anaerobic Respiration & Combustion. Show Answer Correct Answer: B) Anaerobic Respiration & Methanogenic Bacteria. ← PreviousNext →Related QuizzesScience QuizzesBiology Quiz 1Biology Quiz 2Biology Quiz 3Biology Quiz 4Biology Quiz 5Biology Quiz 6Biology Quiz 7Biology Quiz 8Biology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books