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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 a possible benefit of regulating the process of cell differentiation?

Regulating the process of cell differentiation can help ensure that cells develop into the correct type for specific functions in the body. This can prevent abnormalities and diseases associated with improper cell differentiation. Additionally, regulated cell differentiation can aid in tissue repair and regeneration processes.

Does ethanol have a permanent dipole?

Yes. the -OH group. The highly electronegative oxygen hoards electron density away from the hydrogen leaving a partial positive charge there. This is why ethanol is a polar compound miscible with water.

How many bases are in an anticondon?

An anticodon is a sequence of three nucleotide bases on a transfer RNA (tRNA) molecule that pairs with a complementary codon on mRNA during protein synthesis. Therefore, an anticodon consists of three bases.

What are the reasons for the changes of color in biomolecules?

Changes in color in biomolecules can occur due to changes in their molecular structure, such as alterations in conjugated systems or the presence of specific functional groups that interact with light. These changes can affect the absorption and reflection of light, leading to a shift in color. For example, the oxidation state or pH of a molecule can influence its color by changing its electronic configuration.

Why do you add iron III chloride buffer to the salicylate solution?

Iron III chloride is added as a reagent to form a colored complex with salicylate ions. This complex has a strong absorbance at a specific wavelength, allowing for the accurate detection and quantification of salicylate in the solution. The buffer helps maintain the pH of the solution, ensuring a stable environment for the formation of the complex.

Do proteins have enzymes?

Not all enzymes are proteins. In general they are globular proteins. Enzymes that are proteins are long, linear chains of amino acids that fold to produce a three-dimensional product. Most enzymes can be denaturated, which means that they can be unfolded and inactivated, (by heating or chemical denaturants, which disrupts the three-dimensional structure of the protein.) Depending on the type of the enzyme, denaturation may reversible or irreversible.

What is the molar weight of pepsin?

There are different forms of pepsin. All around 44 amino acids long. Choose the one you want, determine the amino acid sequence, then add the weight of the acids together. But don't forget to subtract 18 g/mol for each peptide bond (it will be one less than the number of amino acids you have) as the result of loss of a water molecule with the formation of each bond.

What major enzyme involved on replication?

DNA Helicase is the major enzyme involved in the replication of DNA. The reason why it is so important is that it unwinds the DNA which creates two separate strands.

What is human oligopeptide 1 Where is it found?

Human oligopeptide-1 is also known as epidermal growth factor (EGF). It is a protein that promotes cell growth, proliferation, and differentiation. EGF is naturally found in various bodily fluids such as saliva, urine, and breast milk.

Does starch gives positive result for Benedict test?

Starch is made up of repeating glucose units. Though it is a non reducing sugar, its hydrolysis gives out pure glucose, which is known as dextrose. And glucose, as we know, is a reducing sugar and hence would give a positive result in Benedict's test.

Vitamin c is soluble in water and vitamin d is lipid soluble. how does the structure of the cell membrane determine the route taken by each vitamin?

Vitamin C is water soluable so the only way it can be transported is by faciliated difficusion using a channel protein. Channel proteins allow polar, watersoluable substances and ions to pass across the cell membrane using faciliated diffusion.

Vitamin D is lipid soluble therefore it can pass through using simple diffusion because the phospholipid bilayer lets it pass through down its concentration gradient.

Why did the enzyme activity differ at 0c and 100c?

I will assume that you are talking about enzymes found in the normal human body. Enzymes function best at an optimal temperature (in our case, around 37 degrees celsius) because of the inherent tradeoff between reaction rates and protein stability. Remembering your elementary kinetics, the rate of an endothermic reaction (i.e. one that needs energy to function) is directly proportional to the temperature. Since by all means enzymes are biological catalysts, they follow this rule of thumb. However, remembering your biochemistry, higher temperatures lead to protein denaturization, wherein the activity of the enzyme becomes zero due to changes in the protein folding. Thus, in the case of human enzymes, we can expect to see optimal activity at body temp, low activity at lower temperatures, and no activity at very high temperatures.

It is important to note though that different enzymes have different optimal temperatures. For example, the DNA polymerase enzyme of Thermophilus aquaticus, a type of bacteria living near volcanic vents has an optimal temperature of around 70-80 degrees celsius!

== == the enzymes react faster when the temp. is lower b/c the enzyme would get used to the reaction to keep going and the normal body temp. is closer than 100 degrees celcius>>>......

Which of these forms after th production of zygote?

After the production of a zygote through fertilization, the zygote undergoes multiple rounds of cell division to form a blastocyst. The blastocyst then implants into the uterus to continue developing into an embryo.

Relationship between Nucleic Acids and Nucleotides?

Nucleotides are the building blocks of DNA. Each nucleotide consists of a sugar (in the case of DNA, deoxyribose), a phosphate group, and one nitrogenous base (Adenine, Thymine, Guanine,or Cytosine). The DNA molecule is a double helix of two long strings of nucleotides.

What do monosaccharide and monosaccharide makes?

Two monosaccharides bond together through a dehydration reaction to form a disaccharide. Water is released during this process. For example, glucose + fructose forms the disaccharide sucrose.

Which vitamin will couse tartogenic effect for pregnant lady?

Excess vitamin A during pregnancy can lead to teratogenic effects, causing harm to the developing fetus. It is important for pregnant women to avoid excessive intake of vitamin A to prevent potential birth defects.

How is a codon involved in protein synthesis?

A protein is made up of a bunch of Amino Acids.Codons are used as a code for tRNA which bind to them and each tRNA has bound to the other side if it an Amino Acid, So when there tRNAs bind to the codons they all bring Amino acids which get linked together by peptide bonds and form proteins.

How do you calculate turnover number for an enzyme?

As enzyme concentration increases the more active sites there are avalible, so the rate of reaction increases. therefore the turnover number increases.

Hope it helped!

Tasha


The above it not true. The turn over number is Vmax/Et so if the enzyme concentration is doubled the velocity will also be doubled. Therefore the turn over number will remain constnat.

What is the scope of biochemistry in Pakistan?

Biochemistry has a wide scope in Pakistan, with opportunities in research institutes, universities, pharmaceutical companies, healthcare sector, and government organizations. Biochemists in Pakistan work on areas such as drug development, agriculture, biotechnology, and genetic engineering. There is a growing demand for biochemists in various industries due to advancements in science and technology.

How do you prepare indicator using onion and beetroot?

They way that you prepare an indicator using and onion and beetroot depends on what type of indicator you want to prepare (i.e.: Litmus, pH, redox or other). Generally, you will cut pieces off of the onion and beetroot and put them each in separate flasks adding ethanol or other liquid you want to use for your indicator project.

What section of the Cell cycle is actually devoted to Cell division?

Think its the anaphase,where two identical halves of the chromosomes split apart during anaphase.moveing away from each other towards the oppersite ends of the cell. when the chromosome halves reach the ends,anaphase is over. same ammount of chromosomes at end of each end,this is the number a complete is sapposed to have. Telophase,this phase the chromosomes unwind and become chromatin once again,new nuclear membrane is formed around the bundle of chromitin. The cytoplasm divides in the middle of the cell, now there is two complete cells,each with the same amount of chromosomes as the parent cell. take care, jen

What are the purpose of liver enzymes?

Liver enzymes are proteins produced by the liver to help perform various functions in the body. They play a key role in metabolism, detoxification, and digestion. Monitoring these enzymes through blood tests can help assess liver function and diagnose liver diseases.

What are three Cellular activities that use the energy stored in Atp?

Three cellular activities that use the energy stored in ATP are muscle contraction, active transport of molecules across cell membranes, and cell division. ATP is the primary energy currency of the cell and is used to power multiple cellular processes.

Organic compounds can have bonds?

Yes, organic compounds can have a variety of bonds including covalent, ionic, and hydrogen bonds. These bonds form between atoms within the organic molecule and can affect its structure and properties.