This quiz works best with JavaScript enabled. Home > Science > Biology > Biology – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biology Quiz 27 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the main explanation for the fact that water can cause hydrostatic pressure? A) Because it is incompressible. B) Because it is polar. C) Because it attracts other water molecules. D) Because it exhibits electronegativity. Show Answer Correct Answer: A) Because it is incompressible. 2. What do you call all of the living things AND all of the non-living things together in the same environment? A) Population. B) Community. C) Ecosystem. D) Biome. Show Answer Correct Answer: C) Ecosystem. 3. What is name for synthetic polymers? A) Dehydration synthesis. B) Cellulose. C) Chemistry. D) Convlante bonds. Show Answer Correct Answer: C) Chemistry. 4. The chromatin fibers become more tightly coiled, condensing into discrete chromosomes observable with a light microscope. What phase is this? A) Interphase. B) Anaphase. C) Prophase. D) Cytokinesis. Show Answer Correct Answer: C) Prophase. 5. Households pollute water sources by ..... waste into ponds, lakes and rivers. A) Damaging. B) Dumping. C) Losing. D) Leading. Show Answer Correct Answer: B) Dumping. 6. What is a renewable resource? A) One that can be replaced quickly. B) One that is man-made. C) One that comes from the sun. D) One that will never run out. Show Answer Correct Answer: A) One that can be replaced quickly. 7. Which of the following play a role in stomata closing? A) K+ pumped out of guard cell; low levels of Abscisic Acid. B) K+ is pumped out of guard cells; high levels of Abscisic Acid. C) K+ is pumped into guard cells; low levels of Abscisic Acid. D) K+ is pumped into guard cells; high levels of Abscisic Acid. Show Answer Correct Answer: B) K+ is pumped out of guard cells; high levels of Abscisic Acid. 8. What is photoperiodism? A) The amount of chlorophyll in plants. B) The time in which photosynthesis can occur. C) The fertile time for a plant. D) The response of a plant to the length of night. Show Answer Correct Answer: D) The response of a plant to the length of night. 9. When substances enter a cell by going against the gradient, it is called A) Passive transport. B) Active transport. C) Facilitated diffusion. D) Isotonic interaction. Show Answer Correct Answer: B) Active transport. 10. A field ecologist wants to determine the interactions of various populations of organisms living in a large grassland field. Which method is best for conducting this study? A) Consulting with local farmers about the diversity of organisms in the field. B) Dividing the field in half, walking over it, counting organisms, and then doubling the numbers. C) Walking over the entire field, collecting the organisms and then compiling a total. D) Observing the behaviors of different types of organisms several times during the year. Show Answer Correct Answer: D) Observing the behaviors of different types of organisms several times during the year. 11. Which cell structure is found in plant and animals cells and controls what can come into or leave a cell? A) Cell membrane. B) Cytoplasm. C) Nucleus. D) Vacuole. Show Answer Correct Answer: A) Cell membrane. 12. Protein ..... are enzymes that activate or deactivate other proteins by phosphorylating them. To be active, each ..... must be attached to a ....., a protein that gets its name from its cyclically fluctuating concentration in the cell A) Cyclin, kinases, enzyme. B) Enzymes, kinases, cyclin. C) Kinases, kinases, cyclin. D) None of above. Show Answer Correct Answer: C) Kinases, kinases, cyclin. 13. Which part of the plant is needed for reproduction? A) Flower. B) Leaf. C) Stem. D) Root. Show Answer Correct Answer: A) Flower. 14. If guard cells are swollen with water, then they are more likely to be ..... A) OPEN with stomata. B) CLOSED with no stomata. C) Cannot tell-the water amount doesn't affect it at all. D) None of above. Show Answer Correct Answer: A) OPEN with stomata. 15. Which levels of hierarchy form the scientific name? A) Class and species. B) Order and genus. C) Phylum and species. D) Genus and species. Show Answer Correct Answer: D) Genus and species. 16. A plant growing towards sunlight would be an example of which characteristic of life? Select the best answer. A) Response to a stimuli. B) Capable of reproduction. C) Made up of cells. D) Growth and development. Show Answer Correct Answer: A) Response to a stimuli. 17. Biotechnology A) Treatment and prevention of diseases in both humans and animals. B) The application of biological processes and living organisms in industry. C) The application of biological and physiological principles to clinical practice. D) Chemistry of living organisms, especially the structure and function of their chemical components. Show Answer Correct Answer: B) The application of biological processes and living organisms in industry. 18. How can an experiment be improved? A) Increasing the sample size. B) Repeating the experiment. C) Make the procedure very detailed. D) All of the above. Show Answer Correct Answer: D) All of the above. 19. What part of a virus is the protein capsule that houses the genetic material (DNA/RNA)? A) Tail. B) Nucleus. C) Capsid. D) Glycoprotein. Show Answer Correct Answer: C) Capsid. 20. The life process known as "regulation" involves ..... A) Homeostasis. B) Maintaining a stable internal environment. C) Keeping a steady state. D) All of the above. Show Answer Correct Answer: D) All of the above. ← 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