CELL STRUCTURES AND FUNCTIONS Flashcards
The three major parts of the cell
Cell membrane
Cytoplasm
Nucleus
being the outermost part, has the role of protecting the cell and its contents
Cell membrane
in the middle layer where most of the activities of the cell take place
Cytoplasm
serves as the brain of the cell, directs all of the cell’s activities
Nucleus
controls the exchange of the cells essential components
cell membrane
a double layer of fats and proteins
Phospholipid bilayer
prominent type of lipid molecule
Phospholipid
water loving
hydrophilic
water fearing
hydrophobic
cant pass idependently as they cannot penetrate the hydrophobic interior
Polar substances
can pass through the membrane because of its hydrophobic interior
Lipids such as cholesterol
area in which the organelles are located
cytoplasm
allows for cell expansion and growth
cytoplasm
in the cytoplasm, the organelles are suspended in a gel-like solution called __
cytosol
Nucleus is discovered by ___ in 1833
Robert brown
dubbed as the control center
nucleus
holds chromosomes which carry the tightly wrapped and coiled DNA
Nucleus
two non-polar fatty acid chain groups are attatched to each phospholipid
hydrophobic tail
a phosphate group attached to each lipid molecule
hydrophilic head
consists of a network of structures involved in many functions
Endomembrane system
a vital function in the endomembrane system
protein movement
essential in carrying out the processs within the cell
protein movement
role of transport ensures the flow of activities in the cell, such as
ensuring the adaptation, wrapping, and the transfer of protein across the cell
endo
within
