2. Anatomy of the cell Flashcards
which cells have the most water
embryonic
what determines that shape and fluidity of a cell
the cytoskeleton
other structures within the membrane which may or may not be bound by membrane are called
inclusions
what does the plasma membrane do
separates the cytoplasm from the outside environment
the plasma membrane is a bimolecular layer of what type of phospholipid molecules
amphipathic
the plasma membrane contains which type of proteins
integral
what can these integral proteins contain/be
receptors/channels/transporters/enzymes/cell attachment proteins
the cell has the ability to transport material in and out through the cell membrane. In and Out have terms called…
exocytose and endocytose
the cell membrane is selectively permeable and allows what through it?
Water and oxygen
the cell membrane is selectively permeable and does not allow what through it?
Impermeable charged ions such as Na+
membrane proteins can diffuse ………in the cell membrane
Laterally
however, many proteins are not distributed equally within the cell membrane. why.
because some proteins are anchored
The Plasmalemma (plasma membrane) has what type of appearance
trilaminar
inclusions are dispensable and may only be present as
transients
what do inclusions represent
components that have been synthesized by the cell itself of taken up from the extracellular environment (endocytotic vesicle)
the cytoskeleton definition
filamentous cytosolic proteins
How many classes of filaments are there
3
name the 3 classes of filaments
microfilaments, intermediate filaments and microtubules
microfilaments are how big
7 nanometers in diameter
what are microfilaments composed of
the protein actin