Exam 3: Cellular Structure, Proteins, and Metabolism

The greater the ligand concentration needed to achieve 50 percent saturation of a particular binding site,the higher the affinity of the binding site for that ligand.

A major function of plasma membranes is to

RNA synthesis from a DNA template

One striking feature of plasma membrane structure is its symmetry,with the extracellular and cytoplasmic surfaces virtual mirror images of each other.

Free ribosomes differ from membrane-bound ribosomes in that free ribosomes specialize in synthesizing proteins for export (secretion)from the cell.

One function of integral membrane proteins in the plasma membrane of cells is to form channels to allow passage of nonpolar solutes into the cell.

With respect to the genetic language,how many words are there? _______

Are allosteric proteins describes

Which of the following does not describe the 50 percent saturation point of a solution of ligands and proteins?

Electrons transferred along the electron transport chain can be used to form

Chromosomes are condensed forms of chromatin.

Located primarily on the inner membrane surface is descriptive of

There are twenty different molecules of tRNA.

ATP is

A gene

Once protein synthesis is completed,the protein that was synthesized may undergo further changes prior to its secretion or use within the cell.

The affinity a binding site has for a ligand

The major lipids in cellular membranes are phospholipids.

Phosphorylation or dephosphorylation of proteins is a common means of

Modulator molecules