Cell Types and Development

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 (correct)
It is responsible for the production of proteins
It is the outermost layer of the cell
It is a type of organelle found in the cytoplasm

What is the primary function of the cell membrane?

To store genetic information
To synthesize proteins
To provide structural support to the cell
To control the movement of molecules in and out of the cell (correct)

What is the layer of molecules that forms the central part of the cell membrane?

Oligosaccharide chains
Phospholipids bilayer
Hydrophobic chains (correct)
Hydrophilic heads

What is the size range of eukaryotic cells?

2-1000 µm (A) Signup and view all the answers

What is the process by which stem cells change their structure or function to form cells with different structures and functions?

Cell differentiation (A) Signup and view all the answers

What is the term for the thick fluid that makes up the cytoplasm?

Cytosol (C) Signup and view all the answers

What is the purpose of the morula stage in embryonic development?

To form the blastocyst (C) Signup and view all the answers

What is the type of cell that is found in the inner cell mass of the blastocyst?

Embryonic stem cell (D) Signup and view all the answers

What is the primary function of cholesterol in the cell membrane?

To maintain the fluidity of the cell membrane under various temperatures (B) Signup and view all the answers

What is the purpose of lipid rafts in the cell membrane?

To restrict the movement of cell signaling proteins (B) Signup and view all the answers

What is the composition of the cell membrane?

A lipid bilayer with cholesterol and phospholipids (B) Signup and view all the answers

What is the purpose of membrane proteins in the cell membrane?

To act as membrane transporters and enzymes (D) Signup and view all the answers

What is the significance of the fluid mosaic model?

It validates the fluidity-modulating function of cholesterol (D) Signup and view all the answers

What is the primary function of integral proteins in the cell membrane?

To act as carriers and transporters (A) Signup and view all the answers

Which of the following is NOT a function of glycocalyx?

Stabilizing the lipid bilayer (D) Signup and view all the answers

What is the location of lipid rafts in the cell membrane?

Only in some parts of the cell membrane (B) Signup and view all the answers

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 (B) Signup and view all the answers

What is the primary location of glycoproteins and glycolipids in the cell membrane?

Outer layer (A) Signup and view all the answers

What is the significance of the experiment involving radioactive membrane proteins?

It validates the fluidity-modulating function of cholesterol (B) Signup and view all the answers

What is the effect of cholesterol on the lipid bilayer?

It restricts the movement of the lipid bilayer (A) Signup and view all the answers

What type of proteins are located in only one layer of the phospholipid bilayer?

Peripheral proteins (A) Signup and view all the answers

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 (D) Signup and view all the answers

What is the role of sphingomyelin in the red blood cell membrane?

It is part of the outer half of the membrane (C) Signup and view all the answers

What is the term for the carbohydrate shell on the outer surface of the cell membrane?

Glycocalyx (C) Signup and view all the answers