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Currently, the paramount problem in the field of biomaterial
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21 May 2020, 05:58
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Currently, the paramount problem in the field of biomaterials, the science of replacing diseased tissue with human-made implants, is control over the interface, or surface, between implanted biomaterials and living tissues. The physical properties of most tissues can be matched by careful selection of raw materials: metals, ceramics, or several varieties of polymer materials. Even the requirement that biomaterials processed from these materials be nontoxic to host tissue can be met by techniques derived from studying the reactions of tissue cultures to biomaterials or from short-term implants. But achieving necessary matches in physical properties across interfaces between living and non-living matter requires knowledge of which molecules control the bonding of cells to each other—an area that we have not yet explored thoroughly. Although recent research has allowed us to stabilize the tissue-biomaterial interface by controlling either the chemical reactions or the microstructure of the biomaterials, our fundamental understanding of how implant devices adhere to tissues remains woefully incomplete.
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81% (02:19) correct
19% (01:26) wrong based on 85 sessions
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17. According to the passage, the major problem currently facing scientists in the field of biomaterials is
(A) assessing and regulating the bonding between host tissue and implants (B) controlling the transfer of potentially toxic materials across the interface of tissue and implant (C) discovering new materials from which to construct implant devices (D) deciding in what situations implants are needed (E) determining the importance of short-term implants to the long-term stability of tissue implant interfaces
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49% (01:08) correct
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18. The passage suggests which of the following about the recent research mentioned in lines blue?
(A) It has solved one set of problems but has created another. (B) It has concentrated on secondary concerns but has ignored primary concerns. (C) It has improved practical applications of biomaterial technology without providing a complete theoretical explanation of that improvement. (D) It has thoroughly investigated properties of biomaterials but has paid little attention to relevant characteristics of human tissue. (E) It has provided considerable information on short-term implant technology but little on long-term implant technology.
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95% (00:31) correct
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19. The author's primary purpose is to
(A) answer a theoretical question in the field of biomaterials (B) discuss the current state of technology in the field of biomaterials (C) resolve a research dispute in the field of biomaterials (D) predict an ethical crisis for biomaterials researchers (E) suggest some practical benefits of biomaterial implants
Re: Currently, the paramount problem in the field of biomaterial
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21 May 2020, 18:22
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17. According to the passage, the major problem currently facing scientists in the field of biomaterials is A- Bonding between Tissue and Biomaterials- that is the major theme of the passage.
18. The passage suggests which of the following about the recent research mentioned in lines blue? C- recent research has tackled the control over interface problem. but Bonding between Tissue and Biomaterials is not clear.
19. The author's primary purpose is to B and C are close. But there is no dispute so C is incorrect.
Re: Currently, the paramount problem in the field of biomaterial
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18 May 2024, 05:32
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I relied on PoE for question 18.
18. The passage suggests which of the following about the recent research mentioned in lines blue?
(A) It has solved one set of problems but has created another. The passage doesn't support this. The passage doesn't mention that the research created the problem of the lack of understanding of how foreign materials adhere to tissues. That has been a problem all along. (B) It has concentrated on secondary concerns but has ignored primary concerns. We don't know this. Maybe the recent research did focus on getting answers to the fundamental quetsion, but failed to arrive at a conclusive answer. So, eliminating this. (C) It has improved practical applications of biomaterial technology without providing a complete theoretical explanation of that improvement. (D) It has thoroughly investigated properties of biomaterials but has paid little attention to relevant characteristics of human tissue. The passage doesn't support this. (E) It has provided considerable information on short-term implant technology but little on long-term implant technology. We know nothing about what the short-term and long-term technologies are. It would be too far fetched to infer what they are based on the information provided.
gmatclubot
Re: Currently, the paramount problem in the field of biomaterial [#permalink]