Active transport mechanisms require the use of the cell’s energy, usually in the form of…

A cell’s plasma membrane defines the boundary of the cell and determines the nature of…

Despite their fundamental similarities, there are some striking differences between animal and plant cells Animal…

Ribosomes Ribosomes are the cellular structures responsible for protein synthesis. When viewed through an electron microscope,…

Vesicles and vacuoles are membrane-bound sacs that function in storage and transport. Vacuoles are somewhat…

In animal cells, the lysosomes are the cell’s “garbage disposal.” Digestive enzymes within the lysosomes aid the…

The endomembrane system (endo = within) is a group of membranes and organelles in eukaryotic cells that…

Flagella (singular = flagellum) are long, hair-like structures that extend from the plasma membrane and…

The cytoplasm comprises the contents of a cell between the plasma membrane and the nuclear…

Like prokaryotes, eukaryotic cells have a plasma membrane (Figure 3.9) made up of a phospholipid bilayer…