Question at position 1 Which of the following statements best describes the fluid mosaic model of the plasma membrane?A single layer of proteins surrounding a single layer of lipidsA protein bilayer sandwiching a layer of lipidssingle layer of lipids surrounding a layer of proteinsA lipid bilayer with protein molecules dispersed within it

Question

Question at position 1 Which of the following statements best describes the fluid mosaic model of the plasma membrane?A single layer of proteins surrounding a single layer of lipidsA protein bilayer sandwiching a layer of lipidssingle layer of lipids surrounding a layer of proteinsA lipid bilayer with protein molecules dispersed within it

BlackTom AI · Accepted Answer

The question asks which statement best describes the fluid mosaic model of the plasma membrane. 
Option 1: 'A single layer of proteins surrounding a single layer of lipids' This is inconsistent with the fundamental structure of the plasma membrane, which is not a single layer of proteins encasing lipids but rather a bilayer in which lipids form two layers. It also ignores the mosaic aspect of integral proteins embedded within the membrane. 
Option 2: 'A protein bilayer sandwiching a layer of lipids' This reverses the actual arrangement; membranes are lipid bilayers with proteins interspersed, not protein layers sandwiching lipids. It mischaracterizes the primary constituents and their organization. 
Option 3: 'single layer of lipids surrounding a layer of proteins' This describes a configuration opposite to reality; there is not a single lipid layer encasing a protein layer in the canonical membrane model. It fails to capture the bilayer concept and the dispersed proteins within. 
Option 4: 'A lipid bilayer with protein molecules dispersed within it' This aligns with the fluid mosaic model: a bilayer of lipids forming a flexible two-molecule-thick membrane, with proteins embedded or loosely associated in a dynamic, mosaic-like distribution throughout the membrane. The term 'fluid' captures lateral movement of lipids and proteins, while 'mosaic' reflects the diverse assortment of proteins interspersed. 
In summary, the first three options misstate the basic bilayer structure or the placement of proteins, whereas the fourth option correctly describes the lipid bilayer with dispersed proteins as envisioned by the fluid mosaic model.

查看解析

登录即可查看完整答案

类似问题

Which of the following statements best describes the fluid mosaic model of the plasma membrane:

The lipid bilayer forms the basic structure of the cell membrane.

The plasma membrane (select all that are true):

Question at position 68 Select All That Apply: Which of the following statements is true as it pertains to the head of the cellular membrane?It is hydrophilic.It is water-loving.It is hydrophobic.It is a non-polar molecule.It is water-fearing.It is a polar molecule.

Cholesterol is

One striking feature of plasma membrane structure is its symmetry, with the extracellular and cytoplasmic surfaces virtual mirror images of each other.

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单