0
what is a core membrane ????
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Why proteins and polysaccharides cannot diffuse through the membrance?
They are too large and usually contain hydrophilic regions which prevent movement across the hydrophobic core of the plasma membrane.
Why ions need energy to transfer through plasma membrane?
Energy is only necessary for diffusion if the particles are being moved across the membrane against the gradient. ATP is necessary for this active transport as particles are moved from low concentrations to higher concentrations across the membrane. This is because passive transport, which does not use energy, only works to move particles down their concentration gradient. Ex. Such active transport is used in neuron cells to have a different charge inside and outside of the cell so that it can relay electric signals.
What is the tylakoid?
it is a membrane. a membrane of a chloroplast.
Is the outer membrane continuous with the thylakoid membrane?
the outer membrane is not continuous with the thylakoid membrane
Why don't ions pass through cell membran?
Only small and uncharged particles can pass through the nonpolar part of the membrane interior. Ions are charged and won't pass through a membrane by passive diffusion. Certain ions do pass through membranes by other mechanisms, though.
What is the innermost membrane?
pia mater
What is the core of microvilli?
The core of microvilli is attached to the plasma membrane. It also contain a bundle of about 40 filaments of actin.
What are the simalarites between plants and animal cells?
both got: core with DNA Golgi system ribosomes Mitochondria membrane endoplasmic reticulum cytoplasm
Could cells survive without a cell membrane?
At this time, there is no evidence that prokaryote or eukaryote cells can survive without a cell membrane and be metabolically active at the same time.Many viruses don't have cell membrane but a a protein core instead. Viruses cannot be considered as living cell but infective particles because they are not active outside host cells.
Could a cell survive without cell membrane?
At this time, there is no evidence that prokaryote or eukaryote cells can survive without a cell membrane and be metabolically active at the same time.Many viruses don't have cell membrane but a a protein core instead. Viruses cannot be considered as living cell but infective particles because they are not active outside host cells.
Why proteins and polysaccharides cannot diffuse through the membrance?
They are too large and usually contain hydrophilic regions which prevent movement across the hydrophobic core of the plasma membrane.
Why ions need energy to transfer through plasma membrane?
Energy is only necessary for diffusion if the particles are being moved across the membrane against the gradient. ATP is necessary for this active transport as particles are moved from low concentrations to higher concentrations across the membrane. This is because passive transport, which does not use energy, only works to move particles down their concentration gradient. Ex. Such active transport is used in neuron cells to have a different charge inside and outside of the cell so that it can relay electric signals.
What is the tylakoid?
it is a membrane. a membrane of a chloroplast.
Gel-like membrane overlying the hair cells of the organ of Corti?
tectorial membrane
Is the outer membrane continuous with the thylakoid membrane?
the outer membrane is not continuous with the thylakoid membrane
What regulates passage of materials into and out of cells?
The cell membrane controls movement of materials in and out of the cell.
Why don't ions pass through cell membran?
Only small and uncharged particles can pass through the nonpolar part of the membrane interior. Ions are charged and won't pass through a membrane by passive diffusion. Certain ions do pass through membranes by other mechanisms, though.
