Exam 4: Cells

The individual credited with first observing cells is ____.

The membrane that surrounds the central vacuole is the ____.

Which structures radiate outward from the centrosome?

At one point in human development, tissue connects the fingers, giving the hand a "webbed" appearance.  Enzymes eventually destroy the cells of the webbing and the fingers separate. These enzymes are probably localized in the ____.

Lysosomal enzymes function best at a pH of about ____.

The first observed cells were from ____.

How did researchers determine the proteins involved in the secretory pathway?

Why is there an upper limit to the surface area-to-volume ratio in a cell?

The primary functions of the extracellular matrix are protection and support.

In prokaryotes, photosynthesis occurs in the ____.

The prokaryotic chromosome is comprised of a ____.

How do flagella bend?

Plant cells permit ions and small molecules to move between adjacent cells by means of cytoplasmic channels in their cell walls known as ____.

Chromatin consists of ____.

Some prokaryotes have a capsule, which is an external layer of polysaccharides that protects the cells from physical damage.

The main components of the extracellular matrix are ____.

Cells that are making large quantities of proteins will have numerous ____.

Which type of microscopy passes light directly through a stained and killed specimen?

Over time, cancerous cells typically lose the cell adhesion molecules embedded in their plasma membrane. Loss of these molecules is best associated with which of the following traits of cancer cells?

Trace the correct path in the endomembrane followed by a protein, beginning with its site of synthesis in the rough ER.