In translation, messenger RNA (mRNA)<span> is decoded by a ribosome, outside the nucleus, to produce a specific </span>amino acid<span> chain, or </span>polypeptide<span>. The polypeptide later </span>folds<span> into an </span>active<span> protein and performs its functions in the </span>cell.<span> the construction workers resembles the ribosomes, while hollow blocks represents the polypeptide</span>
In DNA, the uracil (U) is replaced by thymine (T). If a change in the DNA sequence, or mutation, of a gene occurs that creates a stop codon, this is called a nonsense mutation.
In semi-permeable membranes, only some substances can pass through. Sometimes, some can also pass through the channel protein molecules or transport proteins on the cell membrane.
Active transport of calcium into the sarcoplasmic reticulum.
Explanation:
The sarcoplasmic reticulum (SR) is a membrane-bound structure found within muscle cells that is similar to the endoplasmic reticulum in other cells. The main function of the SR is to store calcium ions (Ca2+)
In response to an action potential traveling along the t tubule, voltage-sensitive proteins change shape, opening calcium channels in the adjacent terminal cisterns of the sarcoplasmic reticulum.
