This quiz works best with JavaScript enabled. Home > Science > Biology > Biology – Quiz 56 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biology Quiz 56 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is/are involved in explaining how auxin causes cell elongation? I. an increase in pH breaks hydrogen bonds between cellulose fibresII. auxin activates specific genesIII. a protein pump transports protons from the cell wall to the cytoplasm A) I and II only. B) II only. C) I, II and II. D) II and III only. Show Answer Correct Answer: B) II only. 2. The trophic structure of an ecosystem can be summarized in the form of a(n) A) Ecological pyramid. B) Energy network. C) Climax schematic. D) Trophic level chart. Show Answer Correct Answer: A) Ecological pyramid. 3. Why is meiosis important for sexual reproduction? A) It allows the zygote formed from fertilization to have triple the chromosome number of the organism. B) It allows gametes to have twice the original number of chromosomes of the organism. C) It allows gametes to have half the original number of chromosomes of the organism. D) It allows the zygote formed from fertilization to have half the original number of chromosomes of the organism. Show Answer Correct Answer: C) It allows gametes to have half the original number of chromosomes of the organism. 4. This is the study of interactions between organisms and the interactions that organisms have with their environment. A) Evolution. B) Biology. C) Ecology. D) Commensalism. Show Answer Correct Answer: C) Ecology. 5. Decomposers break down detritus, also known as ..... A) Dead organic matter. B) Inorganic matter. C) Living matter. D) Non-living matter. Show Answer Correct Answer: A) Dead organic matter. 6. Which of the following organisms are LEAST closely related? A) Organisms that share a domain. B) Organisms that share a family. C) Organisms that share a genus. D) Organisms that share a species. Show Answer Correct Answer: A) Organisms that share a domain. 7. Which molecules do not have charged regions? A) Water. B) Hydro. C) Polar. D) Non-poar. Show Answer Correct Answer: D) Non-poar. 8. The science that is concerned with the interaction of organisms with each other and with their environment. A) Biodiversity. B) Ecology. C) Paleontology. D) Biology. Show Answer Correct Answer: B) Ecology. 9. The major locomotor structures in bacteria are A) Flagella. B) Pili. C) Fimbriae. D) Cilia. Show Answer Correct Answer: A) Flagella. 10. Cyanobacteria are classified under A) Protista. B) Monera. C) Plantae. D) Algae. Show Answer Correct Answer: B) Monera. 11. In human heart, the oxygenated blood inters into the heart through A) Aorta. B) Vena cava. C) Pulmonary artery. D) Pulmonary vein. Show Answer Correct Answer: D) Pulmonary vein. 12. What type of organic molecules are enzymes? A) Carbohydrates. B) Lipids. C) Nucleic acids. D) Proteins. Show Answer Correct Answer: D) Proteins. 13. What is the outside, protein coat on a virus called? A) Genetic material. B) Capsid. C) Envelope. D) Tail fibers. Show Answer Correct Answer: B) Capsid. 14. A process in which DNA has the unique ability to make an exact copy of itself. A) Replication. B) Translation. C) Transcription. D) Protein Synthesis. Show Answer Correct Answer: A) Replication. 15. All living things are classified into 3 Domains. Which Domain do WE belong to? A) Archae. B) Bacteria. C) Eukarya. D) None of above. Show Answer Correct Answer: C) Eukarya. 16. What type of microscope is most often used in high school classrooms? A) Light Microscope. B) Transmission Electron Microscope. C) Scanning Electron Microscope. D) Stereoscope. Show Answer Correct Answer: A) Light Microscope. 17. Information gathered from experiments is called ..... A) Data. B) Variables. C) Stimulus. D) Journal. Show Answer Correct Answer: A) Data. 18. Which are mollusks? A) Clams and Oysters. B) Shrimp and Lobsters. C) Corals and Fish. D) Sponges and Starfish. Show Answer Correct Answer: A) Clams and Oysters. 19. What happens after the virus has been taken up by the cell? A) It begins making protein. B) It divides, or replicates. C) It inserts into the host DNA. D) It switches to infectious mode. Show Answer Correct Answer: C) It inserts into the host DNA. 20. Which of these organisms would most likely be found at the bottom of a biomass pyramid A) Giant squids. B) Sand sharks. C) Sea cucumbers. D) Green algae. E) Angel fish. Show Answer Correct Answer: D) Green algae. ← 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