Exam 3: The Cellular Level of Organization

Which of the following cancers arises from muscle or connective tissues?

Which disease below is an inherited condition characterized by the absence of a single lysosomal enzyme called Hex A?

Plasma membranes are ________,which means that some chemicals move easily through plasma membrane while other chemicals do not.

Which of the following is the correct sequence of events in bulk-phase endocytosis shown in the figure?

This type of membrane protein extends across the entire lipid bilayer of the plasma membrane touching both intracellular fluid and the extracellular fluid.

Where would this process occur?

This type of membrane protein anchors cells to neighboring cells and to protein filaments found outside or inside the cell.

A patient with normal development in their 1ˢᵗ year,followed by rapid aging evidenced by dry and wrinkled skin,total baldness,and birdlike facial features likely has which disease?

In this type of transport process,a solute (e.g.glucose)binds to a specific carrier protein on one side of the membrane.This binding induces a conformational change in the carrier protein that results in the solute moving down its concentration gradient to the other side of the membrane.

This is the transport process by which gases,like O2 and CO2,move through a membrane.

This is the site of synthesis of rRNA and assembly of rRNA and proteins into ribosomal subunits.

What structural component of the membrane is labeled (A)in the diagram?

Which of the cells in the diagram are found in the walls of blood vessels where they function to narrow or widen the path for blood flow through that vessel?

The difference in concentration of a specific chemical,like Na+,on the inside and outside of a plasma is referred as a(n)

Which of the following represents an enzyme?

In this transport process,the energy from hydrolysis of ATP is used to drive substances across the membrane against their own concentration gradients.

Which of the following membrane-enclosed organelles modifies,sorts,and packages proteins destined for other regions of the cell?

Which of the following types of membrane proteins function by recognizing and binding to hormones and neurotransmitters?

Which of the following represents an ion channel?

Describe briefly what is occurring at each step in the figure.