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What cellular structures are present ONLY in an animal cell?
Cell Membrane
What are some characteristics of excocytosis?
Exocytosis is a cellular process where vesicles containing substances fuse with the plasma membrane to release their contents outside the cell. This process is essential for various functions, including neurotransmitter release in neurons and hormone secretion in endocrine cells. It typically involves the packaging of materials into membrane-bound vesicles, which then undergo membrane fusion, requiring energy in the form of ATP. Additionally, exocytosis plays a crucial role in maintaining cellular homeostasis and facilitating cell communication.
What is the physical boundary that separates the cell from the outside environment?
The cell membrane! also known as the plasma membrane. It is about 8 nm thick, and all cells have one! It is a semipermeable lipid bilayer. This means that it does not let all materials pass through it, generally only ones that are small and do not have a significant charge. The bilayer consists of phospholipid molecules where the phosphorus heads turn towards the outer environment and inner environment, and the hydrophobic lipid tails turn in towards each other. The membrane may also have membrane proteins that may be either integral or peripheral, and cholesterol molecules. There may be filaments and tubules that help support the cell in the extra cellular matrix. Some cells may have a cell wall that surrounds their cell membrane.
What keeps a cell membrane constantly moving around a cell?
A cell membrane is mostly a film of lipid molecules enclosing a volume of liquid. The lipid film is in a fluid-like phase, and thus the molecules are always in motion. All molecules are subject to the laws of thermodynamics, including the lipids in a cellular membrane. Unless matter is frozen to -273 degrees Celsius, there will always be some movement.
Why isnt cellular energy required for the passenger molecule to be carried across the cell membrane by the carrier molecule?
Because of facilitated diffusion(, which nutralizes it from a higher to a lower concentration.)
Building material or cellular membrane formed cellular membrane formed?
Don't know don't want to know
What is the name of the membrane that regulates what goes in and out of the sphere?
cellular membrane
What is the cellular membrane that protects the nucleus from the cytoplasm of the cell?
The nuclear membrane.
Where are channels located?
Along the cellular membrane.
Where are protiens assembled?
In the ribosomes in the cellular membrane
Cellular structure not bound by membrane?
Nucleoid
Cellular membranes by adding membrane proteins and phospholipids to its own membrane?
Rough ER
What is inter membrane?
It is the extra-Cellular matrix - opposite of the intra-membrane space, the Cytoplasm.
A cellular organelle that possess a membrane?
The mitochondria is a cellular organelle that possesses a membrane. It is known as the powerhouse of the cell, generating energy in the form of ATP through cellular respiration. The mitochondria has two membranes, an outer membrane and an inner membrane, which encloses the matrix where ATP production occurs.
A single mitochondrion consists of?
An outer membrane and an inner membrane, the inner membrane being used during cellular respiration
What part of the plant performs cellular respiration?
POSSIBLY THE INTER MEMBRANE SPACE OR JUST THE MEMBRANE
Is the cell membrane found in the cell or nucleus?
the cellular membrane is the hard surface that surrounds the cell.
