Deck 2 Flashcards
The nuclear membrane encloses a jellylike fluid called
Nucleoplasm
At various points, the two layers of the nuclear envelope fuse, and what penetrate through the fused regions?
Nuclear pores
The nucleus contains one or more small, dark-staining, essentially round bodies called ________. They are also sites where ribosomes are assembled
Nucleoli
What serve as the actual sites of protein synthesis
Ribosomes
When a cell is not dividing, its DNA is combined with protein and forms a loose network of bumpy threads called
Chromatin
When a cell is dividing to form two daughter cells, the chromatin threads coil and condense to form dense, rodlike bodies called
Chromosomes
The flexible and fragile transparent barrier that contains the cell contents and separates them from the surrounding environment is called the
Plasma membrane
The polar “heads” of the lollipop-shaped phospholipid molecules that are attracted to water are called
Hydrophilic
The nonpolar tails that avoid water are called
Hydrophobic
“Sugar proteins” are called
Glycoproteins