NPTEL Organ Printing Week 1 Assignment Answers 2024

Q1. Which bioprinting approach is most suitable for creating complex, multi-cellular spheroids?
Inkjet bioprinting
Laser-assisted bioprinting
Extrusion-based bioprinting
Acoustic droplet ejection

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Q2. Which bioprinting technique is most closely associated with the use of a ribbonn-like donor layer?
Inkjet bioprinting
Laser-assisted bioprinting
Extrusion-based bioprinting
Stereolithography

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Q3. Which of the following is a key advantage of microfluidic bioprinting?
High cell density
Precise control over microenvironments
Rapid prototyping
Large-scale tissue production

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Q4. What is the primary function of photoinitiators in light-based bioprinting techniques?
Improve cell viability
Enhance mechanical properties
Initiate crosslinking reactions
Increase print resolution

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Q5. Which bioprinting approach is most suitable for creating vascularized tissue constructs with hierarchical vessel networks?
Coaxial extrusion bioprinting
Volumetric bioprinting
Microfluidic bioprinting
In situ crosslinking bioprinting

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Q6. The concept of “bioink-free” bioprinting is most closely associated with:
Laser-induced forward transfer (LIFT)
Stereolithography
Fused deposition modeling
Electrospinning

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Q7. Which of the following biomaterials is known for its ability to form reversible physical crosslinks, making it suitable for shear-thinning bioinks?
Poly(ethylene glycol) (PEG)
Alginate
Gelatin methacryloyl (GelMA)
Hyaluronic acid

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Q8. Which bioprinting technique is most suitable for creating high-resolution, cell-laden hydrogel constructs with minimal shear stress on cells?
Microextrusion
Inkjet bioprinting
Digital light processing (DLP)
Fused deposition modeling (FDM)

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Q9. Which bioprinting strategy is most promising for creating patient-specific, anatomically correct tissue constructs?
CT/MRI-guided bioprinting
Freeform reversible embedding (FRE)
Suspended layer additive manufacturing
Projection stereolithography

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Q10. The concept of “smart bioinks” in tissue engineering refers to:
Bioinks with embedded sensors
Stimuli-responsive bioinks
Nanoparticle-laden bioinks
Cell-instructive bioinks

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Q11. Which bioprinting approach is most suitable for creating large-scale tissue constructs with minimal cell damage?
Volumetric bioprinting
High-speed extrusion
Acoustic levitation bioprinting
Microfluidic bioprinting

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Q12. Which of the following bioprinting techniques is known for its ability to print very low viscosity bioinks?
Extrusion-based bioprinting
Laser-assisted bioprinting
Electrohydrodynamic jet bioprinting
Microvalve bioprinting

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Q13. The concept of “in situ crosslinking” in bioprinting is most closely associated with:
Improving print resolution
Enhancing mechanical properties
Increasing cell viability
Facilitating complex geometries

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Q14. Which bioprinting approach is most suitable for creating cell-laden microfluidic devices?
Stereolithography
Fused deposition modeling
Digital light processing
Two-photon polymerization

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Q15. The use of sacrificial materials in bioprinting is primarily associated with:
Creating vascular networks
Improving cell adhesion
Enhancing bioink printability
Controlling construct degradation

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Q16. Which of the following is NOT a common challenge in scaling up bioprinted constructs?
Vascularization
Mechanical integrity
Cell viability
Bioink sterilization

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Q17. The concept of “bioprinting-assisted cellular self-assembly” is most closely related to:
Extrusion-based bioprinting
Inkjet bioprinting
Laser-assisted bioprinting
Acoustic bioprinting

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Q18. What is the primary advantage of using nanocellulose as a bioink component?
Improved electrical conductivity
Enhanced biodegradability
Increased mechanical strength
Better cell adhesion properties

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Q19. The use of decellularized extracellular matrix (dECM) as a bioink is primarily advantageous for:
Improving printability
Enhancing cell function and tissue-specific properties
Increasing printing speed
Reducing bioink cost

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Q20. The concept of “bioorthogonal chemistry” in bioprinting is most closely associated with:
Improving print resolution
Enhancing cell encapsulation
Facilitating post-printing modification
Controlling bioink viscosity