Answer:
The transitional epithelial tissue is perfect for bladder function because it has the ability to stretch.
When the bladder is empty, the cells have a cuboidal shape. When the bladder is full, the cells have a flat shape.
Explanation:
Transitional epithelial tissue is the tissue that makes up the entire bladder and some organs of the urinary system. This tissue has the ability to allow the organs covered by it to have the ability to change shape and size, because this tissue allows these organs to stretch, so it is the perfect tissue to cover the bladder.
As we know, the bladder is the organ responsible for storing urine. When it is filled with urine, the bladder stretches, at that moment, the bladder cells are compressed and assume a flat, stretched shape. When it is empty, the bladder shrinks in size, becoming "wilted", at that moment, its cells assume a cuboidal shape.
Polypeptids
A polypeptide is a linear chain (without ramifications) of aminoacids linked by peptidic-bonds. We speak of a polypeptide when the chain contains between 10 and 100 amino acids. Above 100 amino acids are generally referred to as protein.
Among them, multicyclic peptides, phosphorylated peptides or those incorporating non-peptide bonds or conjugated peptides.
Starch
Starch is a mixture of two homopolymers, amylose and amylopectin
* Amylose, slightly branched with short branches and a molecular weight of between 10,000 and 1,000,000 Dalton (600 to 1000 glucose molecules).
* amylopectin or isoamylose, a branched molecule with long branches every 24 to 30 glucose units via α (1-6) bonds. Its molecular weight can range from 1,000,000 to 100,000,000 Dalton (between 10,000 and 100,000 glucose units).
To summarize the structure of the polypeptides is still linear, but the structure of the starch has ramifications.
The decay of Francium produces radium-223 (Ra-223) through a beta decay or into astatine-219 through an alpha decay. The atomic number of Francium is 87, and that of Astatine is 85.
<h3>What is beta decay?</h3>
Beta decay is a type of radioactive decay in which a beta ray is emitted from the nucleus of an atom. During the beta decay, a proton in the nucleus is transformed into a neutron and vice versa which results into change in the number of proton in the nucleus. If a proton is converted to a neutron, then it is said to be β+ decay. And, if a neutron is converted to a proton, then it is said to be β– decay.
In this reaction, an atom of Francium (Fr-223) is undergoing a beta decay to produce radium (Ra-88) by the conversion of a neutron into a proton.
Learn more about decay here:
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Length of PolyA tail is different in two cells
Explanation:
- Different lengths of Poly A tails are present for different mRNAs so when we compare two peptides translated in two different cells we have different lengths of PolyA tail
- PolyA tail is basically a long chain of nucleotides(adenine nucleotides) which are added to messenger RNA(mRNA) during processing of RNA
- It increases the stability of the molecule
- It protects the mRNA molecule from undergoing degradation in the cytoplasm
- It is involved in binding proteins which further initiates translation;introns are removed from pre mRNA before the final mRNA is exported into cytoplasm
