This quiz works best with JavaScript enabled. Home > Science > Biology > Biology – Quiz 46 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Biology Quiz 46 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A molecule that diffuses down a concentration gradient goes from an area of ..... concentration into an area of ..... concentration. A) High, low. B) Low, high. C) Passive, active. D) Active, passive. Show Answer Correct Answer: A) High, low. 2. What holds atoms, molecules, and compounds together? A) Chemical Bonds. B) Electromagnetism. C) Magnetism. D) Electricity. Show Answer Correct Answer: A) Chemical Bonds. 3. After depolarization what happens to restore resting potential? A) Sodium channels open & sodium ions diffuse out of the neuron. B) Potassium channels open & potassium ions diffuse into the neuron. C) Potassium channels open and potassium ions diffuse into the neuron. D) Sodium channels open and sodium ions diffuse into the neuron. Show Answer Correct Answer: C) Potassium channels open and potassium ions diffuse into the neuron. 4. After examining an experimental procedure, Amir noticed that there was an error in the experimental design. He should A) Be skeptical of the results. B) Be open-minded about the experiment. C) Accept the results and conclusions without question. D) Repeat the experiment to develop scientific consensus. Show Answer Correct Answer: A) Be skeptical of the results. 5. This plant came to india as a contaminant with imported wheat. It is a major cause of pollen allergy. Identify the plant. A) Cymbopogon. B) Oxalis. C) Parthenium. D) Dandelion. Show Answer Correct Answer: C) Parthenium. 6. Ichthyology is the branch of zoology that deals with A) Bees. B) Fish. C) Trees. D) All sea animals. Show Answer Correct Answer: B) Fish. 7. Overweight individuals are more likely to suffer A) Hypotension and type I diabetes. B) Hypotension and type II diabetes. C) Hypertension and type II diabetes. D) Hypertension and type I diabetes. Show Answer Correct Answer: C) Hypertension and type II diabetes. 8. Dietary minerals are ..... A) Surplus to requirements. B) Essential for preventing scurvy. C) Organic materials. D) Essential chemical elements. Show Answer Correct Answer: D) Essential chemical elements. 9. Which evidence for evolution do the common features in the bone structure of vertebrate limbs provide? A) Adaptive radiation. B) Divergent radiation. C) Convergent evolution. D) Discontinuous variation. Show Answer Correct Answer: A) Adaptive radiation. 10. What is pollination? A) Transfer of pollen grain from style to anther. B) Transfer of pollen grain from anther to style. C) Transfer of pollen grain from stigma to anther. D) Transfer of pollen grain from anther to stigma. Show Answer Correct Answer: D) Transfer of pollen grain from anther to stigma. 11. Which type of molecule do whales use for energy storage and insulation? A) DNA. B) Glucose. C) Fat. D) Starch. Show Answer Correct Answer: C) Fat. 12. It is the study of form and structure of cells including the behaviour of nucleus and other organelles. A) Histology. B) Morphology. C) Physiology. D) Cytology. Show Answer Correct Answer: D) Cytology. 13. Animal having a water canal system and spicules A) Pleurobrachia. B) Antedon. C) Spongilla. D) Aurelia. Show Answer Correct Answer: C) Spongilla. 14. Kingdom Protista was proposed by A) Margulis. B) Ernst Hackel. C) Carlous Linnaeus. D) Laveran. Show Answer Correct Answer: B) Ernst Hackel. 15. What's an invertabrate A) Has an endoskeleton. B) Has a backbone. C) Has no backbone. D) Has no endoskeleton. Show Answer Correct Answer: C) Has no backbone. 16. Which will most likely cause variations to occur within a species? A) Competition. B) Mutation. C) Mutualism. D) Predation. Show Answer Correct Answer: B) Mutation. 17. What is TRUE about volvox? A) Unicellular prokaryote. B) Unicellular eukaryote. C) Colonial eukaryote. D) Multicellular eukaryote. Show Answer Correct Answer: C) Colonial eukaryote. 18. An interaction between organisms in which one organism captures and consumes another organism A) Abiotic factors. B) Biotic factors. C) Predation. D) Parasitism. Show Answer Correct Answer: C) Predation. 19. Where does all energy in the food chain come from? A) Sun. B) Plants. C) Water. D) Carbon Dioxide. Show Answer Correct Answer: A) Sun. 20. Why is a shark a carnivore? A) Because it is able to eat seaweed. B) Because it is able to eat dead animals. C) Because it is able to eat sand. D) Because it is able to eat animals. Show Answer Correct Answer: D) Because it is able to eat animals. ← 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