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When is calcium pumped into the sarcoplasmic reticulum?
When Ach enters the synaptic cleft (gap) it open chemically gated sodium channels that starts an action potential spreading through the sarcolemma of the myofibril. This action potential spreads down the T-tubules and "shocks" the sarcoplasmic reticulum into releasing calcium ions.
Are cytosol and cytoplasm the same?
No, cytosol and cytoplasm are not the same. Cytosol is the liquid component of the cytoplasm, which also includes organelles and other structures within a cell.
Does cytosol count as a cell organelle?
No, an organelle is defined as a structure in a cell suspended in the cytosol.
What is the purpose of cytosol?
The cytosol serves as the fluid matrix in which organelles are suspended within a cell. It plays a crucial role in cellular processes such as metabolism, signaling, and transport. Many essential cellular reactions take place in the cytosol.
Is cytosol the same as cytoplasm?
No, cytosol is a component of cytoplasm. Cytoplasm includes all the contents of a cell outside of the nucleus, while cytosol specifically refers to the liquid portion of the cytoplasm.
What is the best explanation for the inability of an animal cell to reduce the Ca concentration in its cytosol compared with the extracellular fluid?
Animal cells have specific pumps and channels that allow them to regulate calcium levels in their cytosol. One key mechanism is the calcium ATPase pump which actively transports calcium out of the cytosol. Additionally, animal cells have ligand-gated channels and voltage-gated channels that control the movement of calcium across the cell membrane. These mechanisms collectively help maintain a higher calcium concentration outside the cell compared to the cytosol.
Why is that electrical impulses cannot pass from neuron to muscle cell?
The synapse, or connection, between a neuron and striated muscle is typically a chemical one called the neuromuscular junction. The pre-synaptic terminus coming from the neuron releases acetylcholine (ACh) which triggers an opening of the ionic channels on the muscle side. The depolarization triggers calcium entry into the cytosol of the muscle and contraction.
When is calcium pumped into the sarcoplasmic reticulum?
When Ach enters the synaptic cleft (gap) it open chemically gated sodium channels that starts an action potential spreading through the sarcolemma of the myofibril. This action potential spreads down the T-tubules and "shocks" the sarcoplasmic reticulum into releasing calcium ions.
Which structure actively pumps calcium ions out of the sarcoplasm to produce relaxation?
The sarcoplasmic reticulum actively pumps calcium ions out of the cytosol to produce relaxation in muscle cells. This process is facilitated by the calcium pump located on the membrane of the sarcoplasmic reticulum, known as the sarcoplasmic/endoplasmic reticulum calcium ATPase (SERCA) pump.
What is cytosol and does it contain?
Cytosol is the fluid portion of the cytoplasm surrounding the organelles. Cytosol does not actually contain organelles.
What is the fluid component of the cytoplasm called?
Cytosol!!!
Are Cytosol found in Eukaryote?
Cytosol is the liquid "goo" inside a cell, and I can't think of any (eukaryotic or prokaryotic) that don't have cytosol. So yes, eukaryotic cells do contain cytosol.
What is a synonym for cytosol?
Cytosol is cytosol, as mitochondria are mitochondria. It would be confusing in Science if there were synonyms and so Scientists try to use universal names for things. Cytosol is part of the cytoplasm, but this cannot be used as a synonym as cytoplasm contains all cell organelles as well as cytosol.
Is cytosol surrounded by a membrane?
A bi-layered membrane surrounds the cytosol.
Which viral type gets replicated in the cytosol?
RNA viruses replicate in the cytosol.
Are cytosol and cytoplasm the same?
No, cytosol and cytoplasm are not the same. Cytosol is the liquid component of the cytoplasm, which also includes organelles and other structures within a cell.
Does a cytosol have bacteria?
Yes they do. Cytosol is the matrix within which all the cellular mechanisms occur. There is no organism as such that does not have the cytosol. Viruses obviously do not have a cytosol because they are not organisms. Viruses are obligate parasites which can multiply only within a particular host.
