객관식
Which of the following statements concerning carbohydrates associated with the plasma membrane is correct?
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2. Cell Chemistry & Cell Components
Biological Membranes
2:27분문제 2
교과서 질문
According to the fluid mosaic model of membrane structure, proteins of the membrane are mostly a. spread in a continuous layer over the inner and outer surfaces of the membrane. b. confined to the hydrophobic interior of the membrane. c. embedded in a lipid bilayer. d. randomly oriented in the membrane, with no fixed inside-outside polarity.
검증된 단계별 안내1
Understand the structure of the cell membrane as described by the fluid mosaic model. This model suggests that the membrane is a flexible layer made of lipid molecules and is interspersed with proteins.
Identify the role of the lipid bilayer, which forms the basic structure of the membrane. It is composed of two layers of lipid molecules with hydrophobic tails facing inward and hydrophilic heads facing outward.
Consider the arrangement of proteins in the membrane. According to the fluid mosaic model, proteins are not just on the surface but are embedded within the lipid bilayer.
Analyze the options given in the question and relate them to the description of the fluid mosaic model. Focus on where the proteins are located in relation to the lipid bilayer.
Choose the option that correctly describes the positioning of proteins in the cell membrane according to the fluid mosaic model.
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2m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
Fluid Mosaic Model
The fluid mosaic model describes the structure of cell membranes as a dynamic and flexible arrangement of various components, including lipids and proteins. In this model, the lipid bilayer acts as a fluid matrix, allowing proteins to move laterally within the layer, contributing to the membrane's functionality and adaptability.
추천 영상:
3:33
Serous Cavity and Fluid
Lipid Bilayer
The lipid bilayer is a fundamental structure of cell membranes, composed of two layers of phospholipids. The hydrophilic (water-attracting) heads face outward towards the aqueous environment, while the hydrophobic (water-repelling) tails face inward, creating a barrier that separates the interior of the cell from the external environment.
추천 영상:
가이드 코스
04:19Lipids
Membrane Proteins
Membrane proteins are integral or peripheral proteins that perform various functions within the cell membrane, such as transport, signaling, and structural support. They can be embedded within the lipid bilayer or attached to its surface, and their orientation and distribution are crucial for maintaining cellular functions and communication.
추천 영상:
가이드 코스
03:05Types of Membrane Proteins
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