24 Questions
What is the characteristic of the nucleus in a cell?
It is located in the center of the cell and controls all functions of the cell
What is the primary function of the cell membrane?
To control the movement of molecules in and out of the cell
What is the layer of molecules that forms the central part of the cell membrane?
Hydrophobic chains
What is the size range of eukaryotic cells?
2-1000 µm
What is the process by which stem cells change their structure or function to form cells with different structures and functions?
Cell differentiation
What is the term for the thick fluid that makes up the cytoplasm?
Cytosol
What is the purpose of the morula stage in embryonic development?
To form the blastocyst
What is the type of cell that is found in the inner cell mass of the blastocyst?
Embryonic stem cell
What is the primary function of cholesterol in the cell membrane?
To maintain the fluidity of the cell membrane under various temperatures
What is the purpose of lipid rafts in the cell membrane?
To restrict the movement of cell signaling proteins
What is the composition of the cell membrane?
A lipid bilayer with cholesterol and phospholipids
What is the purpose of membrane proteins in the cell membrane?
To act as membrane transporters and enzymes
What is the significance of the fluid mosaic model?
It validates the fluidity-modulating function of cholesterol
What is the primary function of integral proteins in the cell membrane?
To act as carriers and transporters
Which of the following is NOT a function of glycocalyx?
Stabilizing the lipid bilayer
What is the location of lipid rafts in the cell membrane?
Only in some parts of the cell membrane
What is the function of membrane proteins that are loosely attached to the outer side of the cell membrane?
To act as several kinds of enzymes
What is the primary location of glycoproteins and glycolipids in the cell membrane?
Outer layer
What is the significance of the experiment involving radioactive membrane proteins?
It validates the fluidity-modulating function of cholesterol
What is the effect of cholesterol on the lipid bilayer?
It restricts the movement of the lipid bilayer
What type of proteins are located in only one layer of the phospholipid bilayer?
Peripheral proteins
What is the main difference between phospholipids in the inner and outer halves of the red blood cell membrane?
The inner half has more phosphatidylserine
What is the role of sphingomyelin in the red blood cell membrane?
It is part of the outer half of the membrane
What is the term for the carbohydrate shell on the outer surface of the cell membrane?
Glycocalyx
Learn about the main differences between prokaryotes and eukaryotes, their characteristics, and the process of cell development from zygote to blastocyst.
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