Nano and Biomaterials Past Exam Paper PDF

ESTELLORE, REYNAN MARK B. NANO AND BIOMATERIALS 2 points each What is the size range of nanomaterials? a) 1-10 nm b) 10-100 nm c) 1-100 nm d) 100-1000 nm Answer: c) 1-100 nm Which of the following is an example of a nanomaterial? a) Hydroxyapatite b) Graphene c) Collagen d) PLA Answer:...

ESTELLORE, REYNAN MARK B. NANO AND BIOMATERIALS 2 points each What is the size range of nanomaterials? a) 1-10 nm b) 10-100 nm c) 1-100 nm d) 100-1000 nm Answer: c) 1-100 nm Which of the following is an example of a nanomaterial? a) Hydroxyapatite b) Graphene c) Collagen d) PLA Answer: b) Graphene What property of nanomaterials enhances their reactivity? a) High surface-to-volume ratio b) High density c) Low reactivity d) High cost Answer: a) High surface-to-volume ratio Which of the following is a primary application of nanomaterials? a) Energy storage b) Drug delivery c) Pollution cleanup d) All of the above Answer: d) All of the above What is a major use of nanomaterials in electronics? a) Strengthening materials b) Energy conversion c) Miniaturization of components d) Water filtration Answer: c) Miniaturization of components Which biomaterial is commonly used in bone implants? a) Hydroxyapatite b) Carbon nanotubes c) Quantum dots d) Graphene Answer: a) Hydroxyapatite What is a characteristic of biomaterials used in medical applications? a) High electrical conductivity b) Biocompatibility c) Ability to conduct heat d) High opacity Answer: b) Biocompatibility What is the function of biomaterial scaffolds in tissue engineering? a) To degrade slowly b) To support tissue growth and regeneration c) To protect tissue from toxins d) To enhance mechanical strength Answer: b) To support tissue growth and regeneration Which of the following is an example of a biodegradable polymer used in biomaterials? a) PLA (Polylactic Acid) b) Graphene c) Collagen d) Quantum dots Answer: a) PLA (Polylactic Acid) Which property of nanomaterials is particularly useful for drug delivery systems? a) Lightweight b) High surface area c) High melting point d) Low conductivity Answer: b) High surface area What is a common application of nanomaterials in medicine? a) Drug delivery b) Bone implants c) Heart bypass surgery d) Blood pressure regulation Answer: a) Drug delivery What does biocompatibility in biomaterials refer to? a) The ability to conduct electricity b) The ability to break down in the body without harm c) The ability to resist corrosion d) The ability to integrate with living tissue without causing immune rejection Answer: d) The ability to integrate with living tissue without causing immune rejection What is a potential negative effect of nanomaterials? a) Increased strength b) Improved durability c) Toxicity to ecosystems d) Reduced conductivity Answer: c) Toxicity to ecosystems Which of the following biomaterials is commonly used for surgical implants? a) Graphene b) Hydroxyapatite c) Quantum dots d) Nanotubes Answer: b) Hydroxyapatite What is one advantage of biodegradable biomaterials? a) They do not need to be removed after use b) They are more expensive than non-biodegradable materials c) They enhance mechanical properties d) They increase risk of infection Answer: a) They do not need to be removed after use Which of the following is an effect of using nanomaterials in energy systems? a) Decreased efficiency b) Increased energy conversion efficiency c) Increased energy consumption d) Decreased lifespan of energy components Answer: b) Increased energy conversion efficiency How are biomaterials typically used in wound healing? a) To kill bacteria b) To provide structural support and promote tissue regeneration c) To cool the wound d) To prevent blood clotting Answer: b) To provide structural support and promote tissue regeneration Which of the following is a challenge associated with the use of nanomaterials? a) High electrical conductivity b) Environmental accumulation and toxicity c) Low cost of production d) High durability Answer: b) Environmental accumulation and toxicity What is a primary property of nanomaterials that makes them effective in drug delivery? a) High electrical conductivity b) High surface area-to-volume ratio c) High opacity d) Resistance to degradation Answer: b) High surface area-to-volume ratio What is a common use of biomaterials in tissue engineering? a) Temporary scaffolds for tissue regeneration b) Enhancing bone strength c) Conducting electrical impulses d) Filtering toxins from the body Answer: a) Temporary scaffolds for tissue regeneration Which of the following nanomaterials is often used in electronics due to its electrical properties? a) Graphene b) Collagen c) Hydroxyapatite d) PLA Answer: a) Graphene What is a key benefit of using biomaterials for implants and prosthetics? a) They are electrically conductive b) They support tissue healing and integration with the body c) They improve heat resistance d) They are more cost-effective than traditional materials Answer: b) They support tissue healing and integration with the body What is the role of quantum dots in nanotechnology? a) Structural reinforcement b) Drug delivery c) Optical applications (e.g., fluorescence) d) Biodegradable material for implants Answer: c) Optical applications (e.g., fluorescence) What is the impact of size-dependent properties in nanomaterials? a) They increase electrical resistance b) They cause nanomaterials to behave differently from bulk materials c) They make nanomaterials less reactive d) They increase their weight Answer: b) They cause nanomaterials to behave differently from bulk materials What is a key factor in choosing biomaterials for medical implants? a) High surface-to-volume ratio b) Biocompatibility and ability to integrate with body tissue c) Ability to conduct electricity d) Strength in extreme temperatures Answer: b) Biocompatibility and ability to integrate with body tissue LOGRONIO, Crizlie A. TOPIC: Selection / Re-use & Recycling of Materials PART I Instructions: Choose the letter with the correct answer. (2pts per number) 1. Its purpose is to recycle waste products by giving it to other people for free a. Freecycling b. Deconstruction c. Open handed reuse d. Upcycling 2. It is a material that is not biodegradable, but it can be recycled repeatedly without diminishing its quality. a. Porcelain b. Glass c. Clay d. Metal 3. Which represents a process in the total materials cycle: a. Earth → Raw Materials → Synthesis and Processing → Manufacture, Assembly → Engineered Materials → Product Design → Application → Waste → Earth b. Earth → Raw Materials → Synthesis and Processing → Engineered Materials → Product Design, Manufacture, Assembly → Application → Waste c. Earth → Raw Materials → Synthesis and Processing → Engineered Materials → Product Design, Manufacture, Assembly → Application → Waste → Earth d. Earth → Recycle / Reuse → Synthesis and Processing → Engineered Materials → Product Design, Manufacture, Assembly → Application → Waste → Earth 4. The following are compositions of glass EXCEPT: a. soda–lime b. leaded c. borosilicate d. Alkaline 5. Its purpose is to recycle used waste products. a. Open handed reuse b. Recycling c. Creative Reuse d. Uphill cycling 6. Is technically a form of reusing, but it refers more specifically to items that are discarded and broken down into their raw materials. a. Freecycling b. Deconstruction c. Open handed reuse d. Recycling 7. The materials reused in recycling serve as substitutes for raw materials obtained from such increasingly scarce natural resources as the following EXCEPT: a. Natural Gas b. Trees c. Mineral Ores d. Geothermal Heat 8. Which is a type of reuse: a. Destruction b. Downcycling c. Recycling d. Construction 9. What is the number on the recycle code of polypropylene? a. 6 b. 4 c. 5 d. 1 10. Its main goals include preserving architectural and cultural heritage, transforming urban blight, and igniting social change. a. Recycling b. Adaptive Reuse c. Adoptive Reuse d. Uphill Cycling 11. It can help reduce the quantities of solid waste deposited in landfills, which have become increasingly expensive. a. Recycling b. Reuse c. Recovery d. Reduce 12. Can be defined as using a waste product without further transformation and without changing its shape or original nature. a. Reduce b. Recycling c. Recovery d. Reuse 13. Which of the following is NOT a part of the process in recycling metals: a. Collection b. Testing c. Transportation d. Processing 14. This is the second option in the waste hierarchy. a. Recovery b. Reuse c. Recycling d. Reduce 15. It is a closed system, in that its materials resources are finite. a. Factory b. Environment c. Earth d. Landfill 16. Typical materials that are recycled include the following EXCEPT: a. Iron and Steel Scrap b. Aluminum Cans c. Appelation d. Glass Bottles 17. Which of the following is an application on the total materials cycle. a. Exploration b. Energy c. Cooling d. Adventure 18. Different types of solid wastes can be reused, such as the following EXCEPT: a. Bottles b. Detergents c. Old Clothes d. Books 19. It is the repurposing of buildings that have outlived their original purpose. a. Adaptive Reuse b. Breakdown Reuse c. Recycling d. Adoptive Reuse 20. Major sources of waste are from packaging, junked automobiles, automobile tires, and domestic durable goods. a. Plastics b. Rubber c. Styrofoam d. Cellophane 21. This is a process from the total material cycle: a. Earth → Raw Materials → Synthesis and Processing → Engineered Materials → Product Design, Manufacture, Assembly → Application → Waste b. Raw Materials → Synthesis and Processing → Engineered Materials → Product Design, Manufacture, Assembly → Application → Waste → Earth c. Waste → Recycle/Reuse → Raw Materials → Synthesis and Processing → Engineered Materials → Manufacture & Assembly → Application d. Waste → Recycle/Reuse → Raw Materials → Synthesis and Processing → Engineered Materials → Product Design, Manufacture, Assembly → Application → Waste 22. The purpose of this is to recycle things that have been previously used by giving them away to other people for free. a. Up Down Funk b. Freecycling c. Up Cycling d. Down Cycling 23. It can help reduce the quantities of solid waste deposited in landfills, which have become increasingly expensive. a. Reuse b. Recovery c. Reduce d. Recycling 24. What is the number on the recycle code of High-density polyethylene? a. 2 b. 1 c. 4 d. 3 25. What is the number on the recycle code of Polysterene? a. 3 b. 4 c. 5 d. 6