Acetylcholine is the fundamental neurotransmitter that transmits information from nerve cells to muscles. It is released by synaptic vesicles and binds to receptors on the muscle membrane.
- In order to stimulate muscle contraction, acetylcholine is released from the SYNAPTIC VESICLES into the synaptic cleft.
- Synaptic vesicles are a type of small organelle clustered at presynaptic terminals.
- These vesicles (synaptic vesicles) are responsible for the uptake, storage, and release of different neurotransmitters.
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Answer:
The answer is A scientific theory
Explanation:
I just did it
Answer:
sieve-tube elements, companion cells
Explanation:
Sieve-tube elements and companion cells are responsible for the movement of photosynthes through a plant.
The sieve tube elements are shorter (almost organelle-free) living cells, placed end to end, forming the sieve tubes. Their transverse cell walls are called sieve plaques that make connections between cells and through openings called sieves establish the connection between the cytoplasm of adjacent cells. Each sieve is coated with calose (glucose polymer), which in winter can completely clog the vessel and then dissolve in spring. When infections occur or the vessel is parasitized, it can also be clogged with callose.
Companion cells are specialized parenchymal cells, which contain all the components that exist in living cells, including the nucleus, are the cells most closely linked to the sieved tube element. The Screened Tube Element and its companion cells are related in development, are derived from the same mother cell, and have several cytoplasmic connections to each other. Due to the many connections, the potential function of the companion cells is to release substances into the sieved tube element and, when the nucleus is absent, to include information molecules, proteins and ATP. When a screened element dies, its companion cells also die, which is a demonstration of this interdependence.
Answer:
Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is the process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins.
Explanation:
From Wikipedia
Chromatids thats your answer to that question.
