Essay on Human Brain: The nervous system of man and other group of vertebrates is divided into three main parts: Central nervous system CNS comprising brain and spinal cord.
These monomers are linked and coiled in a very specific manor giving the polymer a specific tertiary structure an extensively coiled and linked polymer chain caused as a result of the formation of more bonds forming. This tertiary structure is crucial to the function of a polymer as it denotes the necessary shape of the complementary molecule.
This is easier explained through an example. An example of a polymer, is a protein. The monomer used to make up is an amino acid. When two amino acids join together a dipeptide is formed, this is then made into a polypeptide chain by the joining of additional amino acids, it finally becomes a protein when more than one of these polypeptide chains link to one another in a condensation reaction.
Proteins have a variety of functions, these functions are determined by their shapes. For example, haemoglobin, this is a substance in the blood that transports oxygen from the respiratory organs to the rest of the body and returns the waste product carbon dioxide to be exhaled.
One haemoglobin molecule can carry four oxygen molecules each bound to a specific site. Haemoglobin has a quaternary structure. Most of the amino acids in haemoglobin form alpha helix eps, connected by short non-helical segments. Hydrogen bonds stabilise the helical sections inside this protein, causing attractions within the molecule, folding each polypeptide chain into a specific shape.
Even though carbon dioxide is carried by haemoglobin, it does not compete with oxygen for the iron-binding positions, but is actually bound to the protein chains themselves, this relies on the chain being the correct shape for the CO2 molecules to bind to.
Haemoglobin is just one of the many possible forms and functions of a protein polymer. They all have different structures, which makes them specialised to carry out a particular function.
They are roughly spherical in shape due to the tight folding of the polypeptide chains. Enzymes play important roles in most biological processes, in particular metabolism and synthesis. Enzymes work by combining with a substrate to form an enzyme-substrate complex, the substrate is then broken down and released.
Each enzyme has a particular substrate that is can breakdown, this will be the substrate with the complimentary structure to that of the active site of the enzyme. For example starch is only broken down by amylase. As the shape of the active site depends on the shape of the polymer shape so does the over all function of the enzyme.
Antibodies are involved in the immune response. Antibodies have a variable region which acts in a similar way to the active site of an enzyme. Each antibody has a variable region that is the complementary shape for a particular antigen and can therefore destroy it.
Any change in the polymer chain means the variable region is no longer effective. DNA contains the genetic information for every living thing and therefore it is vital that the sequence and therefore shape are correct.
DNA is made up of bases nucleotides every three bases codes for an amino acid this is a codon and is known as the triplet code. A change in just one of these bases can change the shape of the DNA polymer by coding for a different amino acid.
It is not only the function of proteins that is affected by the shape of the polymer chain. Polysaccharides make up carbohydrates. They are formed when more than two monosaccharides are linked together by a glycosidic bond in a condensation reaction.paper to just list and describe, but some type of structure should remain consistent through the paper.
Attempting to use your senses in the description to contextualize the topic for readers. Leaving the reader with a clear impression of the topic.
AP Biology Fall Essay Review The complimentarily of structure and function is an important theme in biology. Select four structure—process relationships listed below and describe . Turnitin provides instructors with the tools to prevent plagiarism, engage students in the writing process, and provide personalized feedback.
RNA is a nucleic acid having almost similar structure as that of DNA molecule except a uracil base instead of thymine. There are three different species of RNA. All these are essential in the normal functioning of the cell especially in protein synthesis. RNA molecule is not the information carrier excepting in few viruses.
Describe How the Structures of Different Polymers Relate to Their Function Essay. Polymers a large molecules made up of a chain of smaller molecules, known as monomers - Describe How the Structures of Different Polymers Relate to Their Function Essay introduction.
The monomers that a polymer is made up of decide its structure and therefore it’s function. Received assignment which is to cover element 3.
1 all PCs. My initial task is to Gather all relevant information on the basic data structures for storage and retrieval.