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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 bond that exists between alanine and phenylalanine?

The bond that exists between alanine and phenylalanine is a peptide bond. Peptide bonds form between the carboxyl group of one amino acid (alanine) and the amino group of another amino acid (phenylalanine) during protein synthesis.

What is sub-classification of phospholipid?

Phospholipids are a class of lipids and are a major component of all cell membranes as they can form lipid bilayer.

The further classification if a s follows:

Most phospholipids contain a diglyceride,a phosphate group,and a simple organic molecule such as choline.

  1. Diacylglyceride structures
    • phosphatidic acid (phosphatidate) (PA)
    • phosphatidylethanolamine (cephalin) (PE)
    • phosphatidylecholine (lecithin) (PC)
    • phosphatidylserine(PS)
    • Phosphoinositides:
      • Phosphatidylinositol(PI)
      • Phosphatidylinositol phosphate(PIP)
      • Phosphatidylinositol bisphosphate(PIP2)
      • phosphatidylinositol triphosphate(PIP3)
  • Phosphosphingolipids
    • Ceramide phosphorylcholine(sphingomylin)
    • Ceramide phosphorylethanolamene
    • Ceramide phosphorylglycerol

Is vitamin water dairy free?

Yes, Vitamin Water is dairy-free. It is made from water, vitamins, and natural flavors, and does not contain any dairy ingredients such as milk or cheese.

What type of fat deposition increase risk for cardiovascular disease?

Abdominal deposits (beer belly) are the highest risk, and seem to be hereditary. However, any degree of obesity puts a person at high risk, regardless of where the weight is deposited. See below.

Only small amounts of enzymes are required for reactions within cells because enzymes are?

Enzymes are catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to occur. This means that only small amounts of enzymes are required to facilitate reactions in cells efficiently. Additionally, enzymes can be reused multiple times, further reducing the need for large quantities.

What is the effect of water on an eggshell?

Water can cause an eggshell to weaken and dissolve due to its porous nature. This happens because water can penetrate the shell, leading to a loss of calcium carbonate that makes up the shell's structure. Ultimately, prolonged exposure to water can result in the eggshell breaking down.

What the different of first class and second class of protein?

proteins from animal origin are called first class proteins. meat and fish are first class proteins because they contain all the essential amino acids (which cannot be made by the body), plant proteins are called second class proteins.

What is percent recovery in protein purification?

When you use methods such as Solvent precipitation, you precipitate a protein molecule but this protein molecule normally does not have the same structure as that of protein in a solution (for example disulfide bonds do not connect the same amino acids) and it is not easy to change this to that of original structure even when the same solution is present. The percent of recovery means the percent that these denatured protein molecules can gain the same structure that they have in the solution before precipitation.

Why does a wilted piece of lettuce crisp up in cold water?

wilted lettuce are in a plasmolysed condition,when they are placed in a cold water or hypotonic solution then water enters the leaves by thye process of endosmosis and the leaves becomes deplasmolysed and they become crisp.

What vitamins and nutrients are found in bacon?

Bacon contains vitamins B1, B2, B3, B5, B6, B12, as well as choline, phosphorus, selenium, iron, and zinc. It is also a good source of protein and healthy fats. However, bacon is high in saturated fat and sodium, so it should be enjoyed in moderation as part of a balanced diet.

What nutrients are usually used in fermenters?

Nutrients commonly used in fermenters include sugars (such as glucose or maltose) as a carbon source for microbial growth, nitrogen sources (like ammonium salts or amino acids) to support protein synthesis, and minerals such as phosphates and sulfates for cofactor functions. Additionally, vitamins and trace elements may be added to support specific metabolic pathways.

What does each amino acid contain?

An amino acid molecule is formed by a primary amino group and a carboxylic acid group substituent on the same carbon atom (the alpha carbon), leaving two coordination links available, one is occupied by a hydrogen and the other by a side chain that gives to the molecule their identity. There is an exception, the amino acid proline that has a secondary amino group.

Is sucrose safe?

Yes, sucrose is safe for consumption in moderation. It is a common type of sugar found in many foods and drinks. However, excessive consumption of sucrose can contribute to health issues like weight gain and tooth decay.

What is the function of potassium sorbate?

Potassium Sorbate is a potassium salt version of sorbic acid. Sorbic acid is a polyunsaturated fat used to inhibit mold growth.(used for over 80 years as a food preservative). Potassium benzoate is added as preservatives. It maintains the freshness of the product through its shelf life and inhibits the growth of microorganisms. It also helps maintain the proper pH. Similar to vinegar, salt or other natural preservatives, is safe as determined by the US Food and Drug Administration (FDA) and is listed on the Generally Recognized as Safe (GRAS) list. From protexinternational.com

Fermentation produces ATP in presences of oxygen?

Fermentation does not require oxygen; it is an anaerobic process that produces a small amount of ATP by breaking down glucose into simpler compounds. In the absence of oxygen, fermentation allows cells to continue glycolysis to generate ATP to sustain cellular functions.

What is the intermediate product of glycolysis that can be used in the biosynthesis of lipids?

The intermediate products of glycolysis include glucose-6-phosphate, fructose-6-phosphate, fructose-1 6-bisphosphate, PGAL, bisphosphoglycerate, and PEP. The main intermediate products are fructose-1 6-bisphosphate, PGAL, and PEP.

What best describes the structure of a DNA molecule?

A DNA molecule is a double helix structure made up of two strands that are composed of nucleotides. Each nucleotide consists of a sugar molecule, a phosphate group, and a nitrogenous base (adenine, thymine, cytosine, or guanine). The bases on the two strands bond together in a complementary way (A pairs with T, and C pairs with G).

Are carotenoids water soluble or lipid soluble?

They are lipid soluble.

Monoterpenes are the major components of the oils of geranium, lemon, mint, turpentine, camphor, and caraway, respectively.

The Diterpenes include Phytol - a linear terpenoid alcohol which is a component of the photosynthetic pigment Chlorophyll.

The Triterpenes include squalene, a biosynthetic precursor to the biosynthesis of cholesterol.

Other higher terpenes include the carotenoids, a class of tetraterpine hydrocarbons and their oxygen-containing derivatives.

An important carotenoid is B-Carotene, the precursor of vitamin A.

Farmesol is an example of a sesquiterpene.

Natural rubber and gutta-percha are polyterpenes - consisting of hundreds of isoprene units in regular /and linear/ Order.

What is chitin in a grasshopper?

Chitin in a grasshopper is a structural polysaccharide that forms the exoskeleton or the hard outer covering of the insect. It provides strength and support to the grasshopper's body, protecting it from physical damage and predators. Chitin is also flexible, allowing the grasshopper to move and grow.

What are some good examples of a city cell analogy project?

a restaurant

a car

a city

a country

a computer

and some other things :)

or you could even use a factory such as:

A factory is probably the best way to describe it:

Cell membrane, would be the wall of the factory with only specific parts where components can enter or leave - doors/gates

Nucleus: main office, where what the factory makes is decided with instructions passed to the main workers.

Nucleolus: would be like the HR department in the office, as it contains the DNA that forms ribosomal RNA, which makes the ribosomes that produce proteins so are like the workers.

Rough ER: manned production line, the ribosomes make proteins and insert them into the RER to be processed and transported out of the cell.

Smooth ER: Automated production line: doesnt use ribosomes but produces lipids, steroids. involved in metabolism of carbohydrates, and regulates Calcium ions.

Ribosomes: Workers- producing proteins from mRNA.

Golgi Bodies: Sort of like the export/mail room. will package products, for example proteins, and send them to the correct destination, either internally or externally.

Mitochondria: Like a power station/ canteen. produces ATP which is used for energy. Powers all processes in the factory, including the workers. hence the combination of power station and food.

Cytoskeleton: these would be similar to the beams and solid structures that give the factory its shape (but in a cell they also enable growth and movement) also sub types would be like conveyer belts moving between departments, as the skeleton is used as a transport network by proteins like myosin, dynein and kinesin.

Lysosomes: Quality control/waste disposal. Detects products that are not 100% perfect and need to be destroyed, engulfs them and breaks them down, so that component parts can be recycled.

Vesicles: packages - how components are transported around and exit the factory. made from phospholipid bi layer they move around on the cytoskeleton, usually from the golgi, to the correct target.

What kinds of vitamins does Gatorade have?

Gatorade typically contains small amounts of vitamins like vitamin C, B3 (niacin), B5 (pantothenic acid), B6, and B12. These vitamins are often added to help replenish electrolytes lost through sweat during physical activity.

What kind of Cell results when a diploid and a haploid gamete fuse during fertilization?

I am not sure what your saying, but i think you mean "what are the haploid cells involved in fertilization?" In this case the answer would be " sperm and egg cells", which then makes a diploid.

How much vitamin e should one take?

Vitamin E is fat soluble, and if an excess amount is ingested, it can be toxic.


The recommended amount in the United States is 6-19mg/day depending on the person, but this is a minimum amount required for health. You can and should get more.

The best way to get ample Vitamin E is from vegetables such as Avacado, Spinach, Lettuce, Ochra, Molokheya, cucumbers, and squash, and then take supplement pills "just in case" your diet doesn't provide enough on a daily basis.

Think of pills as insurance- not a primary source of nutrition. Eating a poor diet cannot be made up for with pills. Often you can see bright yellow urine after taking vitamin pills, which means that it was not absorbed by the body.

Vitamin supplements have been called "expensive urine" by more than one nutritionist.

Learn which foods contain the Vitamins you need, and make vegetables and fruit 80% of our diet.

Info at National Institutes of Health: http://dietary-supplements.info.nih.gov/factsheets/vitamine.asp

What is the balanced equation of hydrobromic acid added to tin metal?

hydrobromic acid + tin -> tin bromide + hydrogen

2HBr (aq) + Sn (s) -> SnBr2 (s) + H2 (g)

What is the molecular weight of butter?

The molecular weight of butter is approximately 800-1000 g/mol. Butter is a mixture of various fats, with the main components being triglycerides made up of fatty acids, which contribute to its overall molecular weight.