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Biochemistry

Biochemistry is the study of the structure, composition and chemical processes in all living organisms. It covers the structures and functions of various cellular components, including proteins, carbohydrates, nucleic acids, lipids, and other biomolecules.

8,065 Questions

What is deoxyribose?

Deoxyribose, also known as D-Deoxyribose and 2-deoxyribose, is an aldopentose - a monosaccharide containing five carbon atoms, and including an aldehyde functional group in its linear structure.

Deoxyribose is a constituent of the nucleotide bases that form DNA.

Is carvacrol water-soluble?

Yes, carvacrol is partially water-soluble. It can dissolve in water to some extent but is more soluble in organic solvents like alcohol and oils.

How many covalent bonds can carbon form with other atoms?

Because its outer shell can hold up to eight electrons, carbon can share electrons with up to four other atoms. Therefore, it can from four covalent bonds.

What amino acid will yield a positive result with millon's test?

Tyrosine.

Millon's Reagent-a solution that is usually made by dissolving mercury in concentrated nitric acid and diluting with water and that when heated with phenolic compounds gives a red coloration used as a test especially for tyrosine and proteins containing tyrosine. (from merriam-webster's medical dicitonary)

i hope this will help you.

Does Vitamin E oil help with scars?

Vitamin E oil may help improve the appearance of scars by promoting skin hydration and enhancing healing processes. However, its effectiveness for scar treatment varies among individuals, and it may not show significant results for all types of scars. It's always best to consult with a dermatologist for personalized recommendations and treatment options for scars.

What is an example of a lipid monomer?

An example of a lipid monomer is a fatty acid, which consists of a hydrocarbon chain and a carboxyl group. Fatty acids can join together through dehydration reactions to form larger lipid molecules like triglycerides and phospholipids.

Are enzymes proteins?

Most enzymes are proteins, yes. However, the statement (used some number of years ago) that all enzymes are proteins is false. There are a few (but important) exceptions to that generalization.

Can there be a limiting reagent if only one reagent is present?

The one that runs out first in a reaction - is thoroughly accurate.

There are quite a few other limiting reagents in limiting reactions - as well.

What is the difference between glycerol and glycerin?

Glycerol is also called glycerin or glycerineThey are two names for the same compound. According to the I.U.P.A.C. nomenclature, it is also called Propan-1, 2, 3-triol.

How are DNA hybridization experiments conducted?

Hybridization is the key concept here.

Just like the 'Lock and Key Concept' that Envelope Enzymes, Dna hybridization Techniques begin with a Construct - the Dna sequence - and is followed by the Complementary Template.'

What are the amphoteric properties of proteins?

Amphoteric properties of proteins

due to the presence of free carboxylic and free amino groups at the end of protein it can react with acids and bases.

In acidic medium protein carries positive charges at amino group and in alkaline medium it carries negative charges at carboxylic group.

What is the first step of DNA replication?

1. Interphase: replication and growth of the chromosomes occur.

2. Prophase: the chromatin condenses to see the individual chromosomes and centrioles move toward the opposite poles of the cell and spindle fibers grow.

3. Metaphase: the chromosomes align in the center of the cell.

4. Anaphase: spindles attach to the chromosomes and split them in part towards the opposite poles.

5. Telophase: the cell begins to separate into to new daughter cells.

6. Cytokinesis: the nucleus begins to form and the cells are completely cut off from each other.

How many ATP molecules are produced in the Electron Transport Chain?

The Electron Transport Chain produces an estimated 34 ATP molecules per glucose molecule in aerobic respiration. This occurs through oxidative phosphorylation, where ATP is generated as electrons move through the chain, leading to the pumping of protons across the inner mitochondrial membrane.

What are common sugar derivatives?

Agave syrup, Bar sugar (or superfine sugar), Bar syrup (or simple syrup), Barley-malt syrup, Beet sugar, Berry sugar, Birch syrup, Brown rice syrup, Brown sugar, Buttered syrup, Cane juice, Cane sugar, Caramel, Carob syrup, Chicory syrup, Chinese rock sugar (or rock sugar or Chinese sugar), Chocolate syrup, Cinnamon sugar, Coarse sugar (or decorating sugar), Coconut sugar, Corn syrup, Corn syrup solids, Crystalline fructose, Date syrup, Demerara sugar, Dextran, Dextrose, Diastatic malt, Diatase, Doughnut sugar (or snow sugar), Erythritol, Ethyl maltol, Fructose (or Levulose), Fruit juice,Fruit juice concentrate,Fructose (or Levulose), Fruit juice, Fruit juice concentrate, Fruit syrup, Galactose, Glucose, Glucose solids, Glycerol, Golden brown sugar, Golden caster sugar, Golden icing sugar, Golden sugar, Golden syrup, Granulated sugar, Grape sugar, Grape sweetener, High-fructose corn syrup (HFCS), High-maltose corn syrup, Honey HSH (Hydrogenated Starch Hydrolsates), Inulin syrup (or chicory syrup), Invert sugar, Inverted sugar syrup, Jaggery (or gur or palm sugar), Karo syrup, Lacitol, Lactose, Levulose, Malitol, Malt Malt syrup, Maltodextrin, Maltose, Mannitol (less calories than sugar, laxative effect),Maple syrup,Maple syrup sugar, Molasses, Muscovado (Barbados) sugar, Nonmelting sugar, Palm sugar, Pancake syrup, Panela, Panocha, Piloncillo, Powdered sugar, Rapadura, Raw sugar, Refiner's sugar, Rice syrup, Rock candy, Rock sugar, Sanding sugar, Simple syrup, Snow sugar, Sorbitol, Sorghum syrup, Stevia, Sucanat, Sucrose, Sugar syrup, Superfine sugar, Tagatose, Tapioca syrup, Treacle, Turbinado sugar, Vanilla sugar, Xylitol, Yellow Sugar

What is a description of the periodic table?

In 1869 Russian chemist Dimitri Mendeleev formulated the periodic law, which stated that properties of elements recurred in a pattern. Based on this, he also helped develop the periodic table, predicting the discovery of multiple elements rather accurately.

What event occurs directly after RNA polymerase recognizes the transcription start of a gene?

Initiation of transcription occurs, involving the unwinding of the DNA helix and the binding of RNA polymerase to the promoter region of the gene. Transcription factors and other regulatory proteins aid in the initiation process.

What piece of equipment is used to obtain ribosomes from biochemical analysis?

A centrifuge is typically used to separate ribosomes from a cell lysate based on their size and density during biochemical analysis. This equipment spins samples at high speeds to create a centrifugal force that allows ribosomes to be isolated from other cellular components.

How does a catalyst work?

A catalyst actually decreases the activation energy of a reaction in 2 ways:

1) By a process called adsorption, it attracts the molecules of the reactants to its surface so that they are closer together and can react more easily by colliding more successfully.

2) It creates a transition state, which is an inter mediate state before the final reaction occurs, which creates an intermediate, unstable compound using the catalyst itself. By the time the final product is formed, a new product as well as the original catalysy are remaining and the activation energy is considerably reduced.

The nitrogenous base found in RNA but not in DNA is?

RNA and DNA are very similar (that is, mRNA is similar, tRNA is quite different). mRNA is basically a single strand of DNA (DNA is a double helix, mRNA is singular), with two differeneces. Firstly, the sugar making up the backbone of the mRNA strand is a ribose sugar, not a deoxyribose sugar (like on DNA). Secondly, the nitrogenous base thymine (which is found on DNA) is replaced witha another base called uracil.

It's also worth noting that mRNA, while manufactured in the nucleus, can leave the nucleus and enter the cell cytoplasm - DNA cannot do this.

Is to much vitamin e harmful to body?

Vitamin C is a well-tolerated water soluble substance which does not accumulate in the body, unlike fat-soluble vitamins (E, D, K). As such, very few adverse effects have been related to its use, though in large doses ( over 2g daily) diarrhea may occur.

Where are protiens made?

during translation protein builds from the mRNA in the ribosomes. tRna decodes mRNA into a protein. It uses the codon s and anticodons to help build it up. The tRNA brings a specific amino acid.

What are the differences between crystalline and amorphous compounds or elements?

Elements themselves are not crystalline or amorphous. Instead this describes the structure of certain elements and compounds in the solid state. For instance, a single element can be found in both a crystalline form as well as an amorphous form. A crystalline solid is one in which there is a regular repeating pattern in the structure, or in other words, there is long-range order. In fact, you can completely describe the entire crystal by describing the single "repeat unit." For instance, as a simple example, if I have the pattern ABCABCABCABCABC... (that repeats infinitely) I can completely describe it by just saying it is "ABC" over and over again. In a 3-dimensional crystal, this repeat unit is called the "unit cell." Some crystalline solids are diamond, table salt, and many types of minerals found in the earth. An amorphous solid is one which does not have long-range order. In other words, there is no repeat unit. To contrast the example above, it would now be: ABCBCABBCACBACBAC... where there is no way to figure out what will be the next letter. Some examples of amorphous solids are glass (in windows, for example), wax, and plastics. If a liquid cools very quickly, the molecules will not have time to arrange themselves in the most favorable pattern (which will almost always be crystalline), and so they are locked into a disordered solid. Silicon is a common solid that can be found in both amorphous and crystalline forms, depending on how it is manufactured. Crystalline silicon is much harder to grow, but it is what is used in computer chips. Amorphous silicon is much cheaper and easier to grow, and is commonly used in solar panels.

What is the difference between polypeptide and protein?

First, it is important to know that all proteins are technically polypeptides, although in general scientists consider polypeptides molecules consisting of one strand of amino acids chemically bound to one another that have no special or unique properties. It would be very difficult or impossible to find a degreed and professional scientist who considers all polypeptides proteins.

One difference between what is called a "polypeptide" and a "protein" is based on the number of amino acids each one contains. A chain of amino acids that contains relatively few amino acids compared to known proteins is a "polypeptide." The second most important distinction between how the two words are used is that scientists normally reserve the word "protein" for molecules consisting entirely or nearly entirely of amino acids that exhibit specialized physical or chemical properties, or both. For example, hemoglobin is considered a "protein" because it is specialized to carry the oxygen in our red blood cells. Keratin is another protein that serves as a structural material in our skin and is the material of which hair is made. On the other hand aspartame, the artificial sweetener, is a polypeptide since it only consists of three amino acids chemically bound to one another, thus it is too small to be called a protein. I can see how one might argue that it is a protein because it has a powerful sweet taste, however there are several other chemical compounds that are not sugars that also have a powerful sweet taste. (What would otherwise be the carboxylic acid end of aspartame has been changed to its methyl ester.)

What makes water polar?

In chemistry, a polar bond is a type of bond between two atoms in which electrons are shared unequally. Because of this, one end of the bond has a fractional negative while the other is positive.