The fluid mosaic model describes the structure of the plasma membrane. Embedded within the plasma membrane are proteins and carbohydrates that contribute to the term mosaic. Glycolipids and glycoproteins are examples of carbohydrates on the surface of red blood cells that determine ABO blood type. These glycoproteins and glycolipids are important for

A) Cell to cell identification and recognition

B) active transport

C) diffusion

Which of the following is a good description (analogy) for the cytoskeleton in a cell?

A) scaffolding
B) water hose
C) drawbridge
D) jelly

Which structure maintains homeostasis by controlling the concentration of solutes within a cell?
A) cytoplasm

B) ribosome

C) plasma membrane

D) nucleus

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The glycoproteins and glycolipids on the surface of red blood cells are important for cell to cell identification and recognition (Option A).

A good analogy for the cytoskeleton in a cell is scaffolding (Option A).

The structure that maintains homeostasis by controlling the concentration of solutes within a cell is the plasma membrane (Option C).

To determine the correct answer for each question, let's break them down one by one:

First question:

The question is asking about the purpose or importance of glycoproteins and glycolipids on the surface of red blood cells. To locate the answer to this question, you can infer the function of these carbohydrates based on the information provided. The text states that these molecules determine ABO blood type. From this information, you can deduce that the glycoproteins and glycolipids play a role in cell-to-cell identification and recognition, allowing the immune system to distinguish between different blood types. Therefore, the correct answer is A) Cell-to-cell identification and recognition.

Second question:

To select the best analogy for the cytoskeleton in a cell, we need to understand the function of the cytoskeleton. The cytoskeleton is involved in providing structural support, aiding in cell movement, and organizing cellular components within the cell. Among the given options, the best analogy would be A) scaffolding because scaffolding provides support and structure similar to how the cytoskeleton functions within a cell.

Third question:

This question is asking about the structure responsible for maintaining homeostasis by controlling the concentration of solutes within a cell. To find the answer, you need to consider the role of each structure mentioned. Among the options provided, the plasma membrane (C) is responsible for regulating the movement of substances in and out of the cell, ensuring balanced concentrations of solutes. Thus, the correct answer is C) plasma membrane.

Remember, to answer questions, it's important to carefully read the information provided and use your deductive reasoning skills!

1.b

2.c
3.c