Question 1

Which of the following best describes the primary function of biomaterials in medical devices?

Accepted Answer

To interact with biological systems without causing adverse reactions

Question 2

A patient receives a titanium implant. Which property of titanium makes it especially suitable for biomedical applications?

Accepted Answer

Ability to form a stable oxide layer that resists corrosion

Question 3

Which of the following equations correctly represents Young's modulus?

Accepted Answer

$$E = \frac{\sigma}{\varepsilon}$$

Question 4

During the process of sintering a ceramic material, what typically happens to its volume?

Accepted Answer

It decreases due to densification

Question 5

Which of the following is NOT a physical aspect of biocompatibility?

Accepted Answer

Electrical conductivity

Question 6

A polymer is defined as:

Accepted Answer

A large molecule composed of repeated subunits

Question 7

Which of the following materials is most stable at physiological pH (around 7.4)?

Accepted Answer

Fluoroxyapatite

Question 8

Which of the following statements about corrosion in biomaterials is correct?

Accepted Answer

Corrosion can be influenced by biological molecules interacting with the metal surface

Question 9

Which of the following polymers is NOT carbon-based?

Accepted Answer

Silicone

Question 10

Which of the following is a correct statement about the glass transition temperature ($$T_g) of $$polymers?

Accepted Answer

$$T_g is $$the temperature at which a polymer becomes soft and flexible

Question 11

Which of the following is a common application of hydroxyapatite in medicine?

Accepted Answer

Dental implants

Question 12

Which of the following reactions is NOT part of a polymerization process?

Accepted Answer

Termination reaction

Question 13

Which of the following biomaterials is considered bioinert?

Accepted Answer

Titanium

Question 14

Which of the following is a disadvantage of using metals as biomaterials?

Accepted Answer

Corrosion

Question 15

Which of the following is a correct statement about the electrochemical potential of metals?

Accepted Answer

Higher potential = more noble metal

Question 16

Which of the following is a correct statement about the use of polyamide as a biomaterial?

Accepted Answer

It has good hemocompatibility

Question 17

Which of the following is a correct statement about the role of plasma spraying in biomaterials?

Accepted Answer

It is used to coat metal implants with hydroxyapatite

Question 18

Which of the following is a correct statement about the role of zirconium dioxide in biomaterials?

Accepted Answer

It is used in dental implants

Question 19

Which of the following is a correct statement about the role of collagen in bone replacement materials?

Accepted Answer

Collagen is often retained in chemically treated bone replacement materials

Question 20

Which of the following is a correct statement about the use of ceramics in biomaterials?

Accepted Answer

Ceramics are often used in bone replacement due to their similarity to natural bone mineral

Biomaterials and Biocompatibility: Study Notes for Biochemistry Students

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