Exam 4: Cells

Grana and thylakoids are structural components found in ____.

A human egg is approximately 100 m m, or ____ mm, in diameter.

The semiliquid substance within the nucleus is called ____.

In cell fractionation, which cellular structure or molecule is isolated in a pellet after the first centrifugation?

Cells actively secreting enzymes would likely carry out more ____ than other cells.

Cell walls are found in ____.

Which early scientist proposed that cells arise only from preexisting cells by a process of division?

Chloroplasts are the site of ____.

The slime layer external to the prokaryotic cell wall is called the ____.

Cytoskeletal elements are assembled from ____.

Microtubules are assembled from ____.

All cells have DNA to carry genetic information, a plasma membrane that serves as a selective barrier, and mitochondria for the generation of energy.

In animal cells, ____ radiating from the cell center anchor organelles such as the ER and Golgi complex, and provide tracks for vesicle movement.

The ____ regulates the movement of molecules in and out of the cell.

As a plant cell grows and matures, additional layers are added to the cell wall to construct the more rigid ____.

Why can eggs be larger than other cell types?

Lipid synthesis occurs in the Golgi complex.

Proteins on the cell surface label the cells as "self", identifying them to the immune cells as belonging to the organism.

Gap junctions that connect nerve cells in dental pulp are responsible for the discomfort felt when teeth are damaged.