Exam 3: The Cellular Level of Organization

If a hole is torn in a cell's plasma membrane, the cell will die because

Each of the following is an example of a nonmembranous organelle except

When telomeres get too short after repeated cell divisions,

________ are compartments within the cell whose contents are isolated from the cytosol.

Which of the following statements concerning mitochondria is false?

Identify the role of cholesterol in the plasma membrane.

Before a cell divides, its DNA must be replicated to

The duplication of DNA is called ________, the copying of DNA to mRNA is called ________, and the readingof the mRNA by the cell to make a protein is called ________.

Tubulin is to microtubules as actin is to

Figure 3-2 The Anatomy of a Representative Cell Use Figure 3-2 to answer the following questions: -Which structure organizes the mitotic spindle during cell division?

Figure 3-2 The Anatomy of a Representative Cell Use Figure 3-2 to answer the following questions: -The structure labeled "1" permits the cell to

Special cells called ________ cells maintain tissues by unending cycles of cell division.

During growth, a tissue increases in size by

A chemical from outside a cell that promotes cell division is called a

Most cells have only one

Proteosomes ________ proteins that have been damaged or denatured.

What would be an example of a cell maintaining homeostasis at the cellular level?

A molecule of ________ contains all the codons needed to produce a particular polypeptide.

Receptor molecules on the surface of cells bind specific molecules called, in general,

An extracellular cation whose concentration gradient drives the secondary active transport of many different solutes is