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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 the difference between a fat and a wax?

Chemically, a wax is a type of lipid that may contain a wide variety of long-chain alkanes, esters, polyesters and hydroxy esters of long-chain primary alcohols and fatty acids. They are usually distinguished from fats by the lack of triglyceride esters of glycerin (propan-1,2,3-triol) and three fatty acids.

Fats (and oils) are triglycerides (or triacylglycerols): they consist of glycerol combined with three fatty acid molecules. The fatty acids are linked to the glycerol by ester links.

Waxes are esters of an alcohol other than glycerol and a single long chain acid.

See related links for more information.

Are hydrocarbons in soluble in water?

Hydrocarbons by themselves are non polar, so they would not be soluble in water, which is a polar molecule. Some hydrocarbon molecules however can have parts (with oxygen, hydrogen, fluor or nitrogen) and interact with water molecules though hydrogen bonding, albeit with less efficiency than other molecules that are polar.

Why peptide bond is rigid and planar?

A peptide bond is rigid and planar due to the partial double bond character between the carbon and nitrogen atoms involved in the bond formation. This partial double bond restricts rotation around the bond axis, leading to a fixed planar structure. The resonance forms resulting from the partial double bond character also contribute to the stability and rigidity of the peptide bond.

What are false substrates?

False substrates are molecules that resemble the natural substrate of an enzyme but cannot be acted upon by the enzyme. They compete with the actual substrate for the enzyme's active site, inhibiting the enzyme's normal function. This can lead to a decrease in enzyme activity and disrupt biochemical pathways.

What makes a lipid a lipid?

Lipids are a diverse group of molecules that are primarily characterized by their hydrophobic nature, meaning they are insoluble in water. They are composed of hydrocarbons and include fats, oils, phospholipids, and steroids. Lipids serve various functions in living organisms, such as energy storage, cell membrane structure, and signaling molecules. The defining feature of lipids is their nonpolar nature, which distinguishes them from other biomolecules like carbohydrates and proteins.

Why should you take the supplement magnesium?

Magnesium is an essential mineral that plays a crucial role in over 300 biochemical reactions in the body, including energy production, muscle function, and nerve transmission. Many people do not consume enough magnesium through their diet, making supplementation necessary for optimal health. Symptoms of magnesium deficiency include muscle cramps, fatigue, and irregular heartbeat, highlighting the importance of ensuring adequate magnesium intake through supplementation.

What is a catchy project name for Photosynthesis?

"A catchy project name for Photosynthesis could be 'Green Light: Unveiling the Secrets of Photosynthesis' or 'Sunlight Symphony: Exploring the Magic of Photosynthesis'. These names evoke the essence of photosynthesis as a natural process driven by light and energy conversion. They are engaging and memorable, making the project more appealing to participants and audiences."

If you are looking through a microscope at a freshly prepared wet mount and you see several perfect circles that are completely clear surrounding your specimen what is the most likely explanation?

The most likely explanation for seeing several perfect circles that are completely clear surrounding your specimen in a wet mount under a microscope is that air bubbles have formed in the mounting medium. These air bubbles can create a halo effect around the specimen, appearing as perfect circles. To resolve this issue, gently tapping the slide or using a fine needle to release the trapped air bubbles can help improve the clarity of the observation. Additionally, ensuring that the mounting medium is properly applied and the slide is prepared without any air pockets can prevent this phenomenon from occurring.

What are the disadvantages of enzymes in baby food?

They're not. Protease enzymes are used in baby foods to break down large proteins into amino acids, making them easier to digest.

They're not. Protease enzymes are used in baby foods to break down large proteins into amino acids, making them easier to digest.

Does the size of a pan affect the time for water to boil?

Larger the surface area of the pot that is in contact with the heat, lesser time it takes for water to boil.

Does the mixture of coca cola and tin tomato has anything to do with blood building?

Oh, dude, mixing Coca-Cola and tin tomato won't magically give you superhero blood or anything. I mean, technically, Coca-Cola contains some iron, but it's not the best source for building blood. If you want to boost your iron levels, maybe try some actual iron-rich foods like spinach or lean meats. But hey, if you're into weird food combos, go for it - just don't expect any miracles!

Why do you say that an enzyme is reusable?

Yes, an enzyme is reusable. Remember that a catalyst speeds up a reaction or lowers the activation energy without being chemically altered in the reaction. An enzyme is simply a biological catalyst so it does not change during the reaction.

The only way to change an enzyme and make it unusable is if it becomes exposed to high temperatures and becomes denatured.This means the active site is damaged and the enzyme is no longer able to attach to substrates and catalyse the reaction.

One complete turn of the double helix of DNA contains 10 pairs of bases and is 3.4 nm long What is the approximate length of the DNA coding sequence of lysozyme a protein of 129 amino acids?

Well, we would have to know how many % of the coding sequence would be exons and introns, but let's ignore this and assume 100% of the sequence are exons;

129 aminoacids = 129 codons = 129*3 nucleotides = 387 nucleotides.

10 pairs of bases = 3,4 nm;

387/10 = 38,7

38,7 * 3,4 = 131,58 nm.

Why transition metal can not be determined by a flame photometry?

Transition metals cannot be accurately determined by flame photometry because they typically have multiple oxidation states, leading to complex emission spectra that are difficult to interpret. Additionally, transition metals often form stable complexes with other compounds in the flame, further complicating the analysis. As a result, flame photometry is not suitable for the precise determination of transition metals, and other analytical techniques such as atomic absorption spectroscopy or inductively coupled plasma spectroscopy are more commonly used for their quantification.

What are the impurities found in the filtrate of sea water?

There are many different components of sea water. However, there are eleven ions that make up its main chemicals.

Chloride (19.35),

Sodium (10.76),

Sulfate (2.712),

Magnesium (1.294),

Calcium (0.413),

Potassium (0.387),

Bicarbonate (0.142),

Bromide (0.067),

Strontium (0.008),

Boron (0.004), and

Fluoride (0.001).

However impurities concentration vary from sea to sea.

What is Coletherm insulation?

"Coleman sleeping bags have the exclusive Coletherm insulation - a synthetic material with hollow fibre which trap greater amounts of warm air from your body heat and uses them to keep you warm." From the web site...

What is a zeptometre?

A zeptometre is a unit of length equal to 10^-21 metres.

What are the inputs and outputs of cellular respiration as the bison eats the grass?

During cellular respiration, a bison consumes grass, which provides glucose (a carbohydrate) as the primary input. The bison also takes in oxygen from the environment. The process converts glucose and oxygen into carbon dioxide, water, and adenosine triphosphate (ATP), which is the energy currency of the cell. Therefore, the inputs are glucose and oxygen, while the outputs are carbon dioxide, water, and ATP.

Why does stearic acid melt at 69 C but linoleic acid melts at 5C?

Stearic acid melts at 69°C due to its long, saturated hydrocarbon chain, which allows for strong van der Waals forces between molecules, requiring more energy (heat) to break these interactions. In contrast, linoleic acid has a shorter chain and contains two double bonds, creating kinks that disrupt the packing of molecules and reduce intermolecular forces. This results in a lower melting point of 5°C for linoleic acid. Thus, the presence of saturation and chain length significantly influences their melting points.

Why does magnesium bicarbonate required double amount of lime for softening?

Magnesium bicarbonate is a relatively strong base and requires twice as much lime to neutralize it compared to other magnesium compounds.

What are the three main ideas of the cell theory?

The three main ideas (or concepts) of the cell theoryare:

1. All living things are made of one or more cells.

2. The cell is the basic unit of life in which the activities of life occur.

3. All cells come from cells that already exist.
The 3 main ideas of the cell theory is: 1. all living things are composed of cells 2. cells are the basic units of structure and function in living things. 3. all cells are produced from other cells.

Which describe what the daily values recommend for the average person?

Daily Values (DVs) are nutrition guidelines that recommend how much of each nutrient the average person should consume to maintain a healthy diet. These values are based on a 2,000-calorie diet and help you understand the nutrient content in foods, including vitamins, minerals, fats, and more.

The JoyScore app promotes balanced eating by offering personalized tips that align with these daily values, ensuring that you meet your nutritional needs without overconsumption. By following these guidelines, you can maintain optimal energy levels, support overall health, and improve your well-being throughout the day.

Do Organisms produced as a result of binary fission exhibit a great deal of genetic variation?

Organisms produced through binary fission do not exhibit a great deal of genetic variation because this process involves a single parent cell dividing into two identical daughter cells, meaning they have the same genetic information. However, mutations can occur during the process, leading to some genetic diversity.

What is the smallest structure between dipeptide amino acid polypeptide and protein?

The smallest structure is a dipeptide, which consists of two amino acids joined by a peptide bond. A polypeptide is a chain of amino acids (more than two), while a protein is a complex molecule composed of one or more polypeptide chains that have folded into a specific 3D structure.