Biochemistry

First pass metabolism refers to the metabolism of a drug that occurs in the liver after it is absorbed from the gastrointestinal tract, before it enters systemic circulation. Phase 1 metabolism is the initial biotransformation of a drug, primarily carried out by enzymes such as cytochrome P450, to make the drug more polar and easier to eliminate from the body.

Endoplasmic reticulum is a complex network of membranes in the cell that includes both rough ER, with ribosomes attached, and smooth ER, without ribosomes. It plays a key role in protein and lipid synthesis, detoxification, and calcium storage.

Amino acids are the building blocks of proteins, one of the most essential molecules for life.

Amino acids can be linked to one another to form a chain called polypeptides. Long polypeptides are proteins.

The process that creates these proteins starting from the amino acids is called translation

There is no precise number of essential amino acids, but the usual numbers given are nine or ten.

The following nine must be in the diet:

histidine

isoleucine

leucine

lysine

methionine

phenylalanine

threonine

tryptophan

valine

In addition, children need arginine in their diet, as they do not make as much as they need.

Some individuals may have further dietary requirements. For example, people with phenylketonuria are unable to convert phenylalanine into tyrosine, and therefore need tyrosine in their diet.

Schwarz Mann, a biochemical supply company with considerable technical and commercial success, was purchased by Becton Dickinson in the 1970s and, like most growing companies that Becton Dickinson purchased, was ruined by the parent company whose executives lacked scientific training and perspective. Becton failed to invest in the biochemical supply business during a time when other companies in the business rapidly expanded and prospered. The Schwarz Mann business at Becton was located at 13 Mountain View Avenue, Orangeburg New York, just north of the New Jersey border.

Because the Schwarz Mann business involved, in part, radiocative biochemicals, Becton tried to use this base to vault into clinical diagnostics that used such chemicals. While the original Schwartz business atrophied, its skilled chemists made a success of the diagnostics business, for a while until the corporate people started interfering. Becton corporate management, based in Paramus and later at a palace like HQ in Franklin Lakes, formed a limited partnership of outside investors to develop a new type of diagnostic product based on a failed concept, a liposomal detection system. This detection system was developed by a Becton unit in Salt Lake City that had been purchased from Howard Hughs (!) and run into the ground by Becton corporate by the early 1980s. While the liposomal concept was flawed from the start, certain corporate executives were tied to its success and the whole affair took on an 'emperor who wore no clothes' atmosphere as staff was forced to pretend that the system worked, and middle managers presented phony data to support efficacy. Ultimately, an expensive and unworkable instrument was developed, called the Aria. It was pushed to market and was a dismal failure that died on the launch pad, because customers refused to go along with the ruse. Multiple Becton divisions were closed as a result of this fiasco. Perhaps five hundred careers were ruined in Orangeberg, Salt Lake, and Baltimore. But the corporate executives got their parachutes and one went on to lead a major American pharmaceutical company. At the end, many Schwartz Mann original employees were still present. So that is the sorry end of a proud company, Schwarz Mann, ground down to oblivion like most small entities that come within the orbit of Becton Dickinson under the pretense of synergy.

Currently the property on Mountainview Avenue, based on a Google search, does not appear to have a corporate owner, and may be in the hands of a non-profit. Since the building was used for high level radioactive chemical synthesis, I often wonder how, and if, the building ductwork was decommissioned of high radioactivity levels, and how the grounds, that were subject to many chemical dumpings over the years (especially outside the door behind what was the cafeteria) were cleaned up for sale.

Deficiency of Vitamin C (scurvy) will lead to gum changes and also causes problems with the blood vessels, hence causing bleeding in the gums. Also a deficiency in Vitamin K may also cause bleeding gums do to the lack of clotting factors which will lead to unusual or excessive bleeding.

iodine is a chemical similar to chlorine, an iodine attack would work in the same way as mustard gas was used in ww1. btw mustard gas is beyond horrible, if u got a weak stomach don't google dat stuff.

Glycerol can act as a cryoprotectant, stabilizing cell membranes during freezing and thawing processes. It can also disrupt hydrogen bonding within the lipid bilayer, potentially causing leakage of cellular contents and altering membrane structure and function. Additionally, glycerol can help maintain membrane fluidity by interacting with phospholipid molecules.

Biochemical characters are traits or attributes of an organism that are related to their chemical composition and metabolic processes. These characters can include things like enzyme activity, protein structure, and metabolic pathways. Studying biochemical characters can provide insights into the genetic and physiological basis of biological functions and behaviors in organisms.

No, hair is not a nucleic acid. Hair is primarily composed of a protein called keratin, which is different from nucleic acids like DNA and RNA. Nucleic acids are genetic materials found in cells that play a role in storing and transmitting genetic information.

Fats are soluble in nonpolar compounds such as other fats, oils, and organic solvents like benzene and ether. They are not soluble in water or other polar solvents.

The primary organs associated with digestion are the mouth, stomach, small intestine, and large intestine. These organs work together to break down food, absorb nutrients, and eliminate waste from the body.

Excess water-soluble vitamins are usually excreted by the body through urine. Since they are not stored in the body, consuming excessive amounts of water-soluble vitamins typically doesn't lead to toxicity.

The end products of the complete hydrolysis of starch are glucose molecules. Starch is a polysaccharide made up of many glucose units, so when it is fully broken down through hydrolysis, it yields individual glucose molecules.

The required components of antioxidant enzyme systems include enzymes like superoxide dismutase, catalase, and glutathione peroxidase. These enzymes work together to neutralize reactive oxygen species and protect cells from oxidative damage. Additionally, cofactors such as zinc, copper, and selenium are essential for the proper functioning of these enzymes.

No, the skin does not produce vitamin C by using ultraviolet rays from the sun. Vitamin C is obtained through the diet from fruits and vegetables. Sun exposure helps the skin produce vitamin D, not vitamin C.

The end product of cellular respiration that is of greatest benefit to the organism is ATP (adenosine triphosphate). ATP is the main energy carrier molecule in cells that is used for various cellular processes, providing energy for functions like muscle contraction, nerve signaling, and overall metabolic activities.

People can not live without vitamin C.

They will develop scurvy, a disease caused by a vitamin C deficiency. If not treated through adding vitamin C to the diet, scurvy is ultimately fatal.

Individuals following a vegan or vegetarian diet, older adults, and those with certain gastrointestinal conditions (such as pernicious anemia or celiac disease) are most likely to be vitamin B12 deficient. Additionally, individuals who have had weight loss surgery or take certain medications that interfere with vitamin B12 absorption may also be at risk.

Sucrose is often added to soap for its exfoliating properties. It helps to remove dead skin cells, leaving the skin feeling soft and smooth. Additionally, sucrose can also create a creamy lather in soap, enhancing the overall texture and feel of the product.

Compounds that are non-polar elute faster in reverse phase chromatography as the stationary phase is non-polar and retains polar compounds longer. Polarity of the compound determines its retention time in reverse phase chromatography.

To analyze the variation of vitamin supplement tablets, calculate the mean and standard deviation of the weights of the 14 tablets. With a 90% confidence level, determine the margin of error using the t-distribution. This margin of error will help define the range within which the true mean weight of the tablets is likely to lie.

A level of 37.6 ng/mL is considered within the normal range for Vitamin D. However, optimal levels may vary depending on individual health factors and clinical guidelines. It is advised to consult with a healthcare provider for personalized recommendations.

Vitamin B12 is the only water-soluble vitamin that can be stored in the human body in large amounts, primarily in the liver. This allows for a reserve to be maintained for months to years, unlike other water-soluble vitamins that need to be consumed more regularly.