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Which of the following is true of the carbohydrate portion of the cell membrane-
  • a)
    It contributes to the polycationic charge
    on the extracellular surface
  • b)
    It is 1% of plasma membrane
  • c)
    It is found primarily in the form of free
    saccharide groups
  • d)
    It has a symmetric distributions
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Which of the following is true of the carbohydrateportion of the cell ...
The correct answer is B) It is 1% of plasma membrane.

Explanation:
The cell membrane, also known as the plasma membrane, is composed of lipids, proteins, and carbohydrates. The carbohydrate portion of the cell membrane, also known as the glycocalyx, plays several important roles in cell function and communication.

1. Function of carbohydrates in the cell membrane:
- Cell recognition: The carbohydrates on the cell membrane act as markers that allow cells to recognize and communicate with each other. This is crucial for various cellular processes such as immune response, tissue development, and cell adhesion.
- Protection: The carbohydrate chains on the cell membrane can help protect the cell from physical and chemical damage.
- Lubrication: The glycocalyx can serve as a lubricant, reducing friction between cells and their environment.

2. Amount of carbohydrates in the cell membrane:
- The carbohydrate portion of the cell membrane is relatively small compared to lipids and proteins. It accounts for approximately 1% of the total plasma membrane composition.
- Lipids make up the majority of the cell membrane, forming a lipid bilayer that provides the structural framework.
- Proteins are also abundant in the cell membrane and have various functions such as transport, signaling, and enzymatic activity.

3. Distribution of carbohydrates in the cell membrane:
- The carbohydrates are not evenly distributed throughout the cell membrane. They are primarily found on the extracellular surface of the membrane, extending outward from the lipid bilayer.
- The carbohydrate chains can be attached to lipids (forming glycolipids) or proteins (forming glycoproteins).
- This asymmetric distribution of carbohydrates helps in cell recognition and interactions with other cells and molecules in the extracellular environment.

In conclusion, the carbohydrate portion of the cell membrane is a relatively small component, accounting for approximately 1% of the total plasma membrane. It plays important roles in cell recognition, protection, and lubrication. The carbohydrates are primarily found on the extracellular surface of the membrane and have an asymmetric distribution.
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Community Answer
Which of the following is true of the carbohydrateportion of the cell ...
B because it is found in plasma
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Maxwell Distribution Function In a given mass of gas, the velocities of all molecules are not the same, even when bulk parameters like pressure, volume and temperature are fixed. Collisions change the direction and the speed of molecules. However in a state of equilibrium, the distribution of speeds is constant or fixed. Distributions are very important and useful when dealing with systems containing large number of objects. As an example consider the ages of different persons in a city. It is not feasible to deal with the age of each individual. We can divide the people into groups: children up to age 20 years, adults between ages of 20 and 60, old people above 60. If we want more detailed information we can choose smaller intervals, 0–1, 1–2,..., 99– 100 of age groups. When the size of the interval becomes smaller, say half year, the number of persons in the interval will also reduce, roughly half the original number in the one year interval. The number of persons dN(x) in the age interval x and x + dx is proportional to dx or dN(x) = nx dx. We have used nx to denote the number of persons at the value of x. In a similar way the molecular speed distribution gives the number of molecules between the speeds v and v + dv. dN(v) = 4p N a3 e–bv2v2dv = nvdv. This is called Maxwell distribution.The plot of nv against v is shown in the figure. The fraction of the molecules with speeds v and v + dv is equal to the area of the strip shown. The average of any quantity like v2 is defined by the integralwhich agrees with the result derived from more elementary considerations.Q. For a given mass of gas, in a state of equilibrium, the distribution of speeds

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Which of the following is true of the carbohydrateportion of the cell membrane-a)It contributes to the polycationic chargeon the extracellular surfaceb)It is 1% of plasma membranec)It is found primarily in the form of freesaccharide groupsd)It has a symmetric distributionsCorrect answer is option 'B'. Can you explain this answer?
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Which of the following is true of the carbohydrateportion of the cell membrane-a)It contributes to the polycationic chargeon the extracellular surfaceb)It is 1% of plasma membranec)It is found primarily in the form of freesaccharide groupsd)It has a symmetric distributionsCorrect answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Which of the following is true of the carbohydrateportion of the cell membrane-a)It contributes to the polycationic chargeon the extracellular surfaceb)It is 1% of plasma membranec)It is found primarily in the form of freesaccharide groupsd)It has a symmetric distributionsCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is true of the carbohydrateportion of the cell membrane-a)It contributes to the polycationic chargeon the extracellular surfaceb)It is 1% of plasma membranec)It is found primarily in the form of freesaccharide groupsd)It has a symmetric distributionsCorrect answer is option 'B'. Can you explain this answer?.
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