Biology Review

Front 1

Component / Function in membrane:
Proteins (transmembrane, and embedded)

Back 1

Channels, receptors, cell recognition

Front 2

Component / Function in membrane:
Oligosaccharides (sugars)

Back 2

Specificity of the cell, modifies proteins

Front 3

Component / Function in membrane:
Cholesterol

Back 3

Regulates the fluidity of the cell membrane

Front 4

Components of cell membrane

Back 4

Proteins, Oligosaccharides, Chloresterol

Front 5

The surface of each plasma membrane is unique to each species. Briefly describe two reason
why this is the case.

Back 5

Ability to recognize self: The ability of cells to recognize each other is due to cell-to-cell
interactions. One way that cells recognize each other is by receptor/receptor interactions. This
recognition of self enables the cells to adhere to one another, provide a means of signaling. The
plasma membrane provides a matrix for these receptors to embedded in. This receptor/receptor
interaction is mediated by the presence of the oligosaccharides. Depending on the type of sugars
that are present, this will define the ability of small molecules to interact with the receptors.

• Ability to recognize non-self: Cells also want to be able to recognize a foreign substance, so if it
does not have the same adhesion or receptor molecules the cells can be recognized as foreign and
destroyed.

Front 6

What could be a mechanism for closing the water channel

Back 6

conformational change of the polypeptides

Front 7

plasma membrane- separates the cell from the environment, regulates traffic of
materials in and out of cell.
ii) endoplasmic reticulum - sequestration of proteins that function outside the
cytosol.
iii) Golgi apparatus- stores, modifies, and packages proteins.
iv) ribosomes on the rough endoplasmic reticulum - synthesis
v) cytoplasm –fluid which suspends all the cellular components
vi) free ribosomes – protein synthesis
vii) smooth ER - lipid synthesis, chemical modification of proteins
viii) mitochondrion- energy transformation - cell "power plant" - ATP synthesis.
ix) Nucleus- contains cellular DNA - stores most of the cell's information.

Back 7

plasma membrane- separates the cell from the environment, regulates traffic of
materials in and out of cell.
ii) endoplasmic reticulum - sequestration of proteins that function outside the
cytosol.
iii) Golgi apparatus- stores, modifies, and packages proteins.
iv) ribosomes on the rough endoplasmic reticulum - synthesis
v) cytoplasm –fluid which suspends all the cellular components
vi) free ribosomes – protein synthesis
vii) smooth ER - lipid synthesis, chemical modification of proteins
viii) mitochondrion- energy transformation - cell "power plant" - ATP synthesis.
ix) Nucleus- contains cellular DNA - stores most of the cell's information.